Anchor Patents (Class 188/341)
  • Patent number: 9133898
    Abstract: A brake spider for a drum brake is provided. The brake spider includes a mounting portion configured for mounting the spider to a vehicle frame and an anchor pin support portion extending from the mounting portion. The mounting portion defines an aperture centered about a first axis and configured to receive a vehicle axle extending therethrough along the first axis. The anchor pin support portion includes a pin receiving section defining a bore centered about a second axis and configured to receive an anchor pin extending therethrough along the second axis. The pin support portion further includes bracket support sections extending axially from opposite sides of the pin receiving section. The bracket support sections face one another and diverge from one another approaching the mounting portion of the spider.
    Type: Grant
    Filed: August 16, 2013
    Date of Patent: September 15, 2015
    Assignee: Bendix Spicer Foundation Brake LLC
    Inventors: Daniel E. Banks, Troy A. Flodin, Brian E. St. John
  • Patent number: 9062728
    Abstract: A brake shoe for a drum brake is provided. The brake shoe includes an arcuate brake table defining a radially outer side configured to receive a brake lining and a radially inner side opposite the radially outer side. The brake table further defines a plurality of sleeves proximate a first end of the brake table. The sleeves are aligned along an axis and axially spaced from one another. Each of the sleeves is configured to receive an anchor pin therein through which the brake shoe may be pivotally coupled to a brake spider. The sleeves are disposed about more than half of a perimeter of the anchor pin.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: June 23, 2015
    Assignee: Bendix Spicer Foundation Brake LLC
    Inventor: Ronald S. Plantan
  • Patent number: 8640836
    Abstract: A device for supporting brake shoes of a drum brake of a vehicle, in particular of a utility vehicle or an agricultural machine, includes a brake carrier, a brake lining carrier and a bearing body, wherein the brake lining carrier is arranged on the brake carrier so as to be swivelable across the bearing body in such a way that the brake lining carrier can be pivoted along a plane of swiveling, the inclination of the plane of swiveling to the brake carrier being variable, and wherein the bearing body has a bearing surface which is rotation-symmetrical about its bearing axis and the front faces of the bearing body have fastening portions for arranging the bearing body on the brake carrier or on the brake lining carrier.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: February 4, 2014
    Assignee: SAF-HOLLAND, GmbH
    Inventor: Olaf Drewes
  • Patent number: 8127903
    Abstract: An improved integral spring brake actuator and mount is provided in which a portion of the spring brake actuator is integrally formed with a connecting flange and a brake cam shaft support tube. The improved integral spring brake actuator and mount is significantly lighter than previous multi-part built-up spring brake actuators and mounting brackets, decreasing vehicle weight, eliminating the need for costly high-quality welding and lowering manufacturing costs. The integral spring brake actuator and mount may be formed from cast aluminum.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: March 6, 2012
    Assignee: Bendix Spicer Foundation Brake LLC
    Inventors: Kenneth E. Scheckelhoff, Ron Plantan
  • Patent number: 7975812
    Abstract: A wheel hub includes a hub flange that extends about the wheel hub. The hub flange includes a removed section that is aligned with a camshaft assembly. An insert is used to fill the removed section. The insert is selectively removable from the hub flange to provide access to the removed section such that the camshaft assembly can be removed from a brake assembly via the removed section without having to remove the wheel hub from an axle assembly.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: July 12, 2011
    Assignee: ArvinMeritor Technology, LLC
    Inventors: David G. Gonska, Scott A. Jenkinson
  • Patent number: 7637361
    Abstract: A one-piece sheet metal combination retainer and anchor for use in a non-servo floating shoe drum brake assembly (10) having a pair of laterally extending ears (62, 64,94, 96) for axially retaining respective ends (22, 24) of a pair of brake shoes (12, 14), and a pair of rivet head reinforceable axially extending portions (58, 60, 82, 84) for anchoring the brake shoe ends during brake application. A base portion (50, 88) has one or more rivet (54, 56, 86, 90) or shaft (92) receiving apertures with the each of the axially extending portions abutted by a rivet head flat surface (70). The base portion has a transversely extending central region (76, 98) to provide, in conjunction with a brake assembly backing plate (52), a parking brake cable (80) retaining clamp.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: December 29, 2009
    Assignee: Robert Bosch GmbH
    Inventors: Djamel Charmat, Stefan U. Anger
  • Publication number: 20090183960
    Abstract: To accomplish both prevention of disengagement of the shoe-hold spring from the shoe-hold apparatus and improvement of the assemblability of the same. The shoe-hold pin has the small diameter portion and the large diameter portion. One end opened slots are formed at the pair of arms of the U-shaped shoe-hold spring, and the slots are such that the small diameter portion of the shoe-hold pin is passable therethrough and the large diameter portion is non-passable. The pin-insertion hole, which is continuous to the slot of the web side arm and may position the large diameter portion therein, is formed in the web side arm and restricts the shoe-hold spring from disengaging therefrom when the large diameter portion of the shoe-hold pin is positioned in the pin-insertion hole.
    Type: Application
    Filed: January 16, 2009
    Publication date: July 23, 2009
    Applicant: NISSHINBO INDUSTRIES. INC.
    Inventors: Takashi Ikeda, Yasunobu Sugii
  • Patent number: 7055662
    Abstract: An improved axle beam and self-contained drum brake assembly, particularly for heavy duty trucks, is disclosed. The assembly includes a brake spider and actuating members mounted thereto via a mounting assembly comprising a mounting sleeve attached to the brake spider by means of a second mounting bracket, and a first mounting bracket securing a pneumatic brake actuator cylinder to the mounting sleeve. A brake actuating camshaft is positioned and rotationally supported therewithin. The disclosed brake assembly allows for numerous variations of axle beam and suspension arrangements.
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: June 6, 2006
    Assignee: Dana Corporation
    Inventors: Jeffrey Lee Jones, Daniel E. Brooks, James Robert Clark, Carl Heinz Meyer
  • Patent number: 7011194
    Abstract: A parking brake having first and second brake shoes each of which has a first end that engages an anchor post on a backing plate and a second end that engages an adjuster. An actuator that is located adjacent an anchor post engages a first end and an adjuster engages a second end of webs for the first and second brake shoes. A brake cable that is connected to the actuator provides a force for moving the first and second brake shoes into engagement with a drum to effect a brake application. The adjuster is characterized by the adjuster mechanism including a yieldable member for reducing the space between the second end engagement between the webs to limit braking force to a predetermined maximum. A strut of the adjuster compresses at loads above a predetermined set load to thereby reduces the effective braking diameter, input loads and hence output torque.
    Type: Grant
    Filed: August 19, 2004
    Date of Patent: March 14, 2006
    Assignee: Robert Bosch GmbH
    Inventors: James E. Doolittle, William E. Sherman, II
  • Patent number: 6772865
    Abstract: A retainer clip is used to maintain proper shoe contact and orientation for a cam actuated brake assembly. The cam actuated brake assembly includes a pair of brake shoes each having an anchor end and an actuation end. Each brake shoe is pivotally mounted at the anchor end to a brake spider with an anchor pin. When brakes are applied, a cam acts against the actuation end causing the brake shoes to pivot about axes defined by the anchor pins. Preferably the retainer clip is mounted to the brake shoe and includes a pair of hooks that support opposite ends of the anchor pin. The retainer clip cooperates with the anchor pins to maintain proper shoe geometry.
    Type: Grant
    Filed: June 26, 2001
    Date of Patent: August 10, 2004
    Assignee: Meritor Heavy Vehicle Technology, LLC
    Inventor: Michael Vito Catania
  • Patent number: 6523652
    Abstract: This invention provides a duo-two leading type drum brake device which simplifies a drum brake structure as well as improves a transmission efficiency of a application force from a shoe actuator to brake shoes. A pivot lever 60 has an intermediate portion pivotally supported on the brake shoes 40. A shoe-actuator 20 is positioned adjacent to the first anchors 30, 30 and being disposed between the ends 60a, 50a of the pivot lever 60 and the other brake shoe 50. A strut 70 is positioned between and functionally engaged with the other ends 60b, 50b of the pivot lever 60 and the other brake shoe 50. An application force of the shoe actuator 20 is transmitted to the brake shoe 40 via a pivot section of the pivot lever 70 and transmitted to the other brake shoe 50 directly from the shoe-actuator 20 and indirectly via the strut 70.
    Type: Grant
    Filed: February 26, 2001
    Date of Patent: February 25, 2003
    Assignee: Nisshinbo Industries, Inc.
    Inventor: Takashi Ikeda
  • Patent number: 6499569
    Abstract: This invention related to a multi-layered damped anchor shim adapted for use in a drum brake assembly. The anchor shim includes an inner surface and an outer surface which is adapted to contact the second ends of the brake shoes. The anchor shim includes a damping material applied to the inner surface thereof so as to be disposed between adjacent contacting areas of the outer surface of the inner retainer plate and the inner surface of the anchor shim to thereby reduce the transmission of noise from the brake shoes through the abutment assembly to the backing plate.
    Type: Grant
    Filed: May 18, 2001
    Date of Patent: December 31, 2002
    Assignee: Kelsey-Hayes Company
    Inventors: Mark Beggs, Frank Connolly, Li Jun Zeng
  • Publication number: 20020195302
    Abstract: A retaining clip is used to maintain proper shoe contact and orientation for a cam actuated brake assembly. The brake assembly includes a pair of brake shoes each having an anchor end and an actuation end. Each brake shoe is pivotally mounted at the anchor end to a brake spider with an anchor pin. When the brakes are applied, a cam acts against the actuation end causing the brake shoes to pivot about axes defined by the anchor pins. Preferably the retaining clip is mounted to the brake shoe and includes a pair of hooks that support opposite ends of the anchor pin. The retaining clip cooperates with the anchor pins to maintain proper shoe geometry.
    Type: Application
    Filed: June 26, 2001
    Publication date: December 26, 2002
    Applicant: Meritor Heavy Vehicle Technology, LLC
    Inventor: Michael Vito Catania
  • Patent number: 6454062
    Abstract: A mount bracket attached to a vehicle body is formed by pressing a metal plate to constitute a structure substantially in a shape of a flat plate having a circular plate portion overlapping a circular disc portion of a backing plate and a flange portion extended from an outer periphery of the circular plate portion as a portion attached to the vehicle body. A pair of brake shoes, a shoe drive mechanism and an anchor pin are constituted to be directly attached to the circular plate portion of the mount bracket without interposing the backing plate.
    Type: Grant
    Filed: February 19, 2002
    Date of Patent: September 24, 2002
    Assignee: Akebono Brake Industry Co., Ltd.
    Inventors: Masatoshi Arita, Hisanori Yokokura
  • Patent number: 6360852
    Abstract: A drum-in-hat park brake assembly having a first brake shoe retained on a backing plate by a first pin and a second brake shoe retained by a second pin. The first and second pins permit the first and second brake shoes to be moved in a radial plane and to rotate about an axis of an opening in the backing plate. The first and second brake shoes each have a first engagement end which is aligned on the backing plate by an anchor post and a second engagement end which is selectively spaced apart by an adjuster mechanism. A spring arrangement urges the first and second brake shoes toward the anchor post and into engagement with the adjuster mechanism. An actuator assembly is connected to the first engagement end of the first and second brake shoes and upon receiving an input force moves first and second friction pads associated with the first and second brake shoes into radial engagement with a drum.
    Type: Grant
    Filed: July 31, 2000
    Date of Patent: March 26, 2002
    Assignee: Robert Bosch Corporation
    Inventors: William Eugene Sherman, II, Randall Michael Zonca, Timothy James Posey, David Thomas Sadanowicz
  • Patent number: 6345708
    Abstract: It is one object of this invention to eliminate a driver's impression of delay in braking effectiveness at an initial stage of a braking operation and the phenomenon of over-braking with an internal drum brake device. For this purpose rigid anchor members (61b, 61b) and deformable anchor members (64, 64) respectively providing supporting points for the brake shoes are located at diametrically different positions from a brake center. The brake shoes (20, 30) are supported by the deformable anchor members (64, 64) until a braking force reaches a predetermined value but are supported by the rigid anchor members (61b, 61b) when braking forces exceeds the predetermined value.
    Type: Grant
    Filed: May 17, 2000
    Date of Patent: February 12, 2002
    Assignee: Nisshinbo Industries, Inc.
    Inventor: Yoichi Fujiwara
  • Patent number: 6223869
    Abstract: A drum brake device is provided which facilitates the pre-mounting of a long link, without increasing the number of components or the cost of the device. The long link (44) is pivotable on the central segment of one brake shoe (13). An engagement hook (48) protrudes from one or the other of the long link (44) or the one brake shoe (13). A notched groove (25) is formed in the other component thereof. The engagement hook (48) is inserted into the notched groove (25). The rotation of the long link (44) relative to the one brake shoe (13) will cause the long link (44) and one brake shoe (13) to be superimposable and detachable.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: May 1, 2001
    Assignee: Nisshinbo Industries, Inc.
    Inventors: Seiji Asai, Yasushi Kobayashi
  • Patent number: 6216832
    Abstract: An integral block for non-driven and non-steerable wheels of an automotive vehicle includes a brake drum, a wheel hub, an antifriction bearing, an axle journal, and an assembly base for non-rotating components of a drum brake. The latter include brake shoes and appertaining mounting means, as well as brake cylinders, brake pistons and parts for connection to brake shoes. An assembly base made by die-casing or forging is formed as a carrier plate having an integrally molded stop for supporting the brake shoes in a circumferential direction, and either a separate, thin-walled mud plate is provided or an integrated mud ring. As opposed to conventional component groups, in which the mounting base is a plate section, the integral block of the invention can more reliably take into account varying load requirements, thereby achieving substantial reductions in weight and manufacturing costs.
    Type: Grant
    Filed: October 7, 1998
    Date of Patent: April 17, 2001
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Andreas Doell, Michael Schorn, Michael Kautenburger, Marc-Oliver Rettig
  • Patent number: 6213264
    Abstract: An improved camshaft sealing arrangement includes seals at each end of the camshaft housing. In addition, seals and washers are positioned between the camshaft and the slack adjuster connection. The combined seals provide a camshaft that is less likely to require maintenance than prior art camshafts. The seal adjacent the cam contacts an outer periphery of the camshaft housing. This seal also provides a thrust bearing washer surface against the camshaft. The seals between the camshaft and the slack adjuster include washers to properly secure and position the seals, the camshaft and the slack adjuster.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: April 10, 2001
    Assignee: Meritor Heavy Vehicle Systems, L.L.C.
    Inventors: Donald G. Walker, David J. Dettloff, David J. Edwards
  • Patent number: 6131708
    Abstract: A shock absorber (13) is provided between the anchor (9) and the ends (2b, 3b) of the brake shoes (2, 3) facing the anchor (9) to reduce the impact noise between the brake shoe and the anchor.
    Type: Grant
    Filed: October 7, 1998
    Date of Patent: October 17, 2000
    Assignee: Nisshinbo Industries Inc.
    Inventor: Yoichi Fujiwara
  • Patent number: 6131710
    Abstract: A pin is used to anchor an end of a brake shoe to a boss in a brake spider. The brake shoe has a pair of spaced apart ribs, each of the ribs having an aperture at an end thereof. The pin is a two-piece assembly with first and second elongate members. A first end of each of the elongate members has a trunnion formed on it, and the second end of the elongate members are sized and adapted to telescope one into the other. The trunnions are sized to be received in the rib apertures while an intermediate portion of the pin between the trunnions is sized to be received in the brake spider boss. The first and second trunnions can be compressed towards each other a sufficient distance to permit the trunnions to be disengaged from the rib apertures. A biaser is located inside the pin to urge the first and second elongate members apart from each other, to assist in maintaining the trunnions in the respective rib apertures.
    Type: Grant
    Filed: November 18, 1997
    Date of Patent: October 17, 2000
    Assignee: Dana Corporation
    Inventor: M. Andrew Power
  • Patent number: 6062354
    Abstract: A spring plate intended to form part of a drum brake shoe hold-own device of the general kind in which a retaining pin anchored, in use, on the brake back plate and passing through an opening in the brake shoe web, cooperates with the spring plate to limit movement of the web away from the backplate against which it normally rests. The spring plate has a pair of arms of which respective opposed major generally planar faces are superposed so that, in use, in a brake, mutual abutment of the faces limits movement of the shoe away from the back plate.
    Type: Grant
    Filed: December 2, 1997
    Date of Patent: May 16, 2000
    Assignee: Lucase Industries
    Inventor: Michael Stephen Pugh
  • Patent number: 6062353
    Abstract: A drum brake device is provided which facilitates the pre-mounting of a long link, without increasing the number of components or the cost of the device. The long link (44) is pivotable on the central segment of one brake shoe (13). An engagement hook (48) protrudes from one or the other of the long link (44) or the one brake shoe (13). A notched groove (25) is formed in the other component thereof. The engagement hook (48) is inserted into the notched groove (25). The rotation of the long link (44) relative to the one brake shoe (13) will cause the long link (44) and one brake shoe (13) to be superimposable and detachable.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: May 16, 2000
    Assignee: Nisshinbo Industries, Inc.
    Inventors: Seiji Asai, Yasushi Kobayashi
  • Patent number: 5590742
    Abstract: A two-piece stamped caliper adapter includes a cast iron anchor and a stamped steel adapter plate. The stamped adapter plate includes reinforcement ribs for providing structural rigidity and stiffness to withstand the loads imposed by a vehicle wheel brake system. A stamped caliper adapter makes a redundant drum brake assembly more readily adaptable to most vehicles and provides other cost-saving economies. In the preferred embodiment, the cast iron anchor and the stamped steel adapter plate are bolted together and the stamped steel adapter plate is spot welded to a drum brake assembly backing plate.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 7, 1997
    Assignee: ITT Automotive, Inc.
    Inventor: Kenneth E. Gutelius
  • Patent number: 5445250
    Abstract: A brake shoe mounting for a vehicle drum brake hinges brake shoes to a brake anchor member to swivel around axes that are substantially parallel to the brake drum axis. To simplify the assembly and disassembly of the brake shoes and to improve the adaptation of surfaces of brake linings to the inner surface of the brake drum that expands under stress, the hinging of the brake lining shoes to the anchor member is achieved by ball bearings.
    Type: Grant
    Filed: November 3, 1993
    Date of Patent: August 29, 1995
    Assignee: Otto Sauer Achsenfabrik Keilberg
    Inventor: Hubert B. Koschinat
  • Patent number: 5407037
    Abstract: A brake shoe for an internal shoe drum brake has an arcuate platform carrying a lining of friction material on its outer face. A web extends perpendicularly from the inner face of the platform and provides a shoe tip intended to be supported on an angled surface of the brake abutment. This shoe tip has a pair of differently directed surface portions. The invention also embraces an internal shoe drum brake incorporating a pair of the aforesaid shoes of which the abutment shoe tips are arranged so that the abutment is engaged respectively by non-corresponding ones of the shoe tip surface portions.
    Type: Grant
    Filed: November 10, 1992
    Date of Patent: April 18, 1995
    Assignee: Lucas Industries public limited company
    Inventor: Paul F. Ridealgh
  • Patent number: 5400882
    Abstract: In a duo-servo drum brake comprising a mechanical expander adjacent a thrust bearing for supporting the brake shoes, with the expander including an operating lever to which is transmitted the operating force of an actuator substantially in a direction tangential to the edge of the brake drum. The brake shoe is movable through an expander in the direction of the operating force and connected to a thrust bearing through a prestressed spring. The spring force of the prestressed spring opposes the expanding force of the expander and exceeds the operating force required for placing the brake shoes in abutment with the brake drum on the operating lever.
    Type: Grant
    Filed: July 8, 1992
    Date of Patent: March 28, 1995
    Assignee: Alfred Teves GmbH
    Inventors: Rolf Weiler, Erhard Czich, Harald Goebel
  • Patent number: 5325945
    Abstract: A brake support assembly for a vehicle including a stamped metal spider having a planar mounting portion and a pair of diametrically opposed support portions. A first support portion includes a first pair of ribs extending along opposite edges thereof as involuted ribs. A second support portion includes a second pair of ribs extending along opposite edges thereof to form flanges. A bracket extends across and connects the first pair of ribs. The bracket and the first support portion of the spider include laterally spaced apertures which receive press fit sleeve-type bushings. Anchor pins disposed in said sleeve-type bushings carry one end of a pair of brake shoes each comprised of a pair of spaced generally parallel webs secured to a table. The opposite end of the brake shoes is supported by cam follower rollers. Springs bias the brake shoes into contact with a cam actuator which may be rotated to displace the brake shoes.
    Type: Grant
    Filed: September 23, 1992
    Date of Patent: July 5, 1994
    Assignee: Rockwell International Corporation
    Inventor: Donald G. Walker
  • Patent number: 5322145
    Abstract: An improved operating mechanism for a drum brake assembly including a mounting flange for securing the brake assembly to a vehicle component, a hollow abutment block secured to the mounting flange, and a backing plate secured to the mounting flange. A pair of arcuate drum brake shoes are supported relative to the backing plate. The hollow abutment block located on the mounting flange between a pair of adjacent ends of the brake shoes. According to one feature of the present invention, the operating mechanism is at least partially disposed in the chamber for engaging and actuating the brake shoes, and is coupled to an actuation cable having an end portion supported in a generally perpendicular relationship relative to the backing plate.
    Type: Grant
    Filed: January 19, 1993
    Date of Patent: June 21, 1994
    Assignee: Kelsey-Hayes Company
    Inventor: Anthony C. Evans
  • Patent number: 5316111
    Abstract: A brake camshaft (22), having a cam (23) at one end for actuation by rotation of the camshaft to expand the brake shoes of a drum brake, has two spaced bearing assemblies (16, 21), preferably both self-aligning, releasably secured on an axle beam (1) at mountings (8, 9). The mountings have apertures, conveniently slots (10, 13), at least one of which is open or openable laterally of the brake camshaft (22) to enable the camshaft (22) to be manoeuvred, with tilting or lateral movement, out of engagement with the apertures when the bearing assemblies (16, 21) have been released from the mountings, to withdraw the camshaft with its bearing assemblies from the mountings. In one example the mounting (9) remote from the cam, a bearing mounting bracket, has an open-ended slot (10) opening to the edge of the mounting for withdrawal of the camshaft, and the other mounting (8) has a slot (13) with which the cam (23) has to be aligned for withdrawal.
    Type: Grant
    Filed: August 6, 1992
    Date of Patent: May 31, 1994
    Assignee: Rubery Owen-Rockwell Limited
    Inventor: Jonathon M. H. Layfield
  • Patent number: 5180037
    Abstract: For a vehicle having a relatively large axle tube, a mechanically operated drum brake is provided having a hollow abutment post between adjacent ends of a pair of opposed arcuate brake shoes and having an improved actuating mechanism for the brake shoes mounted partially within the abutment post.
    Type: Grant
    Filed: March 26, 1991
    Date of Patent: January 19, 1993
    Assignee: Kelsey-Hayes Company
    Inventor: Anthony C. Evans
  • Patent number: 5159998
    Abstract: A drum brake is provided of the leading-trailing shoe type in which a single piece spring installed as a part of the assembly holds down the brake shoe assemblies against the backing plate and also retracts the shoes after brake actuation. The single piece spring also retains the lower ends of the shoes against the anchor plate. This arrangement eliminates the need for separate shoe hold-down springs and separate upper and lower return springs, resulting in a significant reduction in parts and labor for assembly.
    Type: Grant
    Filed: August 2, 1991
    Date of Patent: November 3, 1992
    Assignee: General Motors Corporation
    Inventors: Douglas M. Copp, Robert W. Hyde, Frank W. Brooks, Sr., Gary G. Holliday, Michael W. Fanelli
  • Patent number: 5099967
    Abstract: A drum brake assembly has brake shoes 2 and 3 within a rotatable drum 1. The shoes 2 and 3 are displaceable to effect braking by an hydraulic ram 7 and free ends 9 of the shoes react against an abutment 10. This reaction is effected through a layer of viscoelastic damping material and metal plate laminate 110 which may be carried by either the brake shoes or the abutment 10. The viscoelastic layer may be bonded between steel plates and secured by a spring clip to either the brake shoe or the abutment 10. Alternatively the viscoelastic layer may be bonded to the abutment 10. The laminate 110 can be accommodated within a recess in the abutment 10. The provision of the viscoelastic layers through which the brake shoes react on the abutment 10 alleviates the development of noise or squeal during use of the brake assembly.
    Type: Grant
    Filed: July 7, 1989
    Date of Patent: March 31, 1992
    Assignee: BBA Group Plc.
    Inventor: Allan M. Lang
  • Patent number: 5096027
    Abstract: A drum brake including a backing plate adapted to be mounted on a non-rotatable member of a vehicle, the backing plate having a shaft hole formed therethrough at the center thereof for accommodating a shaft of the vehicle, a drum adapted to be mounted on a rotatable member of the vehicle, a pair of brake shoes mounted on the backing plate and arranged to be expandable in the radial direction of the drum, a connector connecting respective ends of each of the brake shoes together, an anchor with which the other end of each of the brake shoes are engageable, and mounting bolts for mounting the backing plate on the non-rotatable member of the vehicle. The mounting bolts are located outwardly of the shaft hole and close to each other. The anchor is also fixed to the non-rotatable member of the vehicle by the mounting bolts.
    Type: Grant
    Filed: December 20, 1990
    Date of Patent: March 17, 1992
    Assignee: Tokico Ltd.
    Inventors: Kinzo Kobayashi, Shinichi Izumi
  • Patent number: 5038899
    Abstract: An internal shoe brake, which is being used as a parking brake in a disc hub, is designed so that it can be preassembled in a ready-to-be-installed fashion. For that purpose, the anchor plate, serving as a cover plate, is mounted to a support by at least two fixing members. The fixing members are provided with heads which mesh free from play with bores provided in the axle support. Fixing of the support and the anchor plate to the axle support is effected through the intermediary of a screw. The screw and the fixing members jointly transmit the circumferential forces onto the axle support.
    Type: Grant
    Filed: March 30, 1990
    Date of Patent: August 13, 1991
    Assignee: Alfred Teves GmbH
    Inventor: Rolf Weiler
  • Patent number: 5022502
    Abstract: A duo servo drum brake shoe anchor having a T-shaped configuration in which the inner recess corner surfaces define a pocket on each side, each of which receives a rounded end of one of the shoes in force transmittable engagement. The crossbar part of the anchor is located on one end of the keystone-shaped main body part of the anchor. The main body part has slanted sides which contract the tendency of the secondary shoe end, for example when forward braking is in process, to move outwardly in a wedging action, and the crossbar part lower sides forming part of the pockets prevent the shoe end in the pocket from moving outwardly toward the drum being braked.
    Type: Grant
    Filed: July 3, 1989
    Date of Patent: June 11, 1991
    Assignee: General Motors Corporation
    Inventor: Ronald L. Shellhause
  • Patent number: 4993525
    Abstract: Each of a pair of wire springs has a loop end fitting on an anchor mount for a leading-trailing shoe assembly. Each spring has an arm extending from its loop end along the web of a shoe and terminates in a hook end which fits within a slot in the associated shoe web. The springs will return the brake shoes to their retracted position after serice or parking brake operation by cantilever spring bias force stored in the spring arms as the springs are installed, reengaging the adjuster/strut assembly after actuation of the wheel cylinder during service brake operation; retain the lower ends of the shoes against the anchor plate; and hold the shoes down against the backing plate by torsional spring bias forces of the springs which are stored in the spring loop ends and are directed onto the web of each shoe toward the backing plate through the spring arms and the arm outer portions which are immediately adjacent to the spring arm hook ends.
    Type: Grant
    Filed: September 25, 1989
    Date of Patent: February 19, 1991
    Assignee: General Motors Corporation
    Inventor: Robert W. Hyde
  • Patent number: 4981200
    Abstract: An improved "expanding-shoe" drum brake (100), including an immovable spider member (38) to which brake shoes (18, 19) are pivotally mounted to move into engagement with a rotating annular brake drum (10). As is common, the shoes move in response to motion of a brake-actuating rotatable S cam (12), which is located between first adjacent ends of the brake shoes. The cam applies force to two cam followers (14, 15), which are rollers rotatably fixed to respective brake shoes. At the second end of each brake shoe an anchor pin (30, 31) is fixedly mounted to with webs of the respective brake shoe, as by welding (57A, 57B). In the embodiment described, a corresponding receptacle (43, 45) in the immovable spider has a semicircular surface (49, 51) at its bottom to serve as a bearing. The bearing surface engages the anchor pin, for rotation of the shoe. The brake shoe is resistant to twisting and misalignment.
    Type: Grant
    Filed: August 25, 1989
    Date of Patent: January 1, 1991
    Assignee: Eaton Corporation
    Inventor: Thomas A. Gee
  • Patent number: 4936426
    Abstract: A brake assembly, for a vehicle axle having a beam, including a spider mounted on the beam, a camshaft mounted on one end of the spider, a pair of anchor pins mounted on an opposite end of the spider, and a pair of brake shoes. Each of the brake shoes has at least one bearing surface disposed at one end thereof mounted on an outer portion of one of the anchor pins and a roller mounted on an opposite end thereof operatively engageable with the camshaft. A spring interconnects upper portions of the brake shoes and pivotally biases the upper ends of the brake shoes toward each other into retracted positions. A retainer adjacent the anchor pin ends of the brake shoes biasingly urges the bearing surfaces of the brake shoes into engagement with the anchor pins. The retainer is a U-shaped spring element having a hook section at each of its free ends encompassing the anchor pin ends of the brake shoes.
    Type: Grant
    Filed: June 28, 1985
    Date of Patent: June 26, 1990
    Assignee: Dana Corporation
    Inventors: Weeden Chatman, Than Naing
  • Patent number: 4887698
    Abstract: A mechanical brake actuator for a shoe drum brake including a pair of brake shoes carried by a back plate wherein one pair of adjacent ends of the shoes engage an abutment fixed relative to the back plate, comprises an assembly including a pair of pivotally interconnected parts for co-action respectively with the brake shoes, one part being a force-applying lever engaging one shoe and the other part engaging the other shoe and extending therefrom to the lever to form a pivot member pivotally interconnecting the lever and strut, a pair of rollers on the pivot member, an opening in the abutment, and a pair of spaced surfaces on the abutment on opposite sides of the opening, the rollers being in rolling engagement with the spaced surfaces, and the lever and strut being movably disposed in the opening so that force applied the lever in one direction to pivot the lever about the pivot member urges the one shoe into engagement with the drum and urges the strut to displace the other shoe into engagement with the dru
    Type: Grant
    Filed: August 3, 1988
    Date of Patent: December 19, 1989
    Assignee: Lucas Industries Public Limited Company
    Inventors: Timothy J. Hunt, Hadyn L. Craske
  • Patent number: 4858730
    Abstract: A stamped metal plate for supporting a brake assembly on a vehicle axle which includes a substantially planar and circular mounting portion, diametrically opposed, planar first and second support portions substantially parallel to and offset in opposite directions from the mounting portion and a pair of reinforcing ribs with each rib extending continuously along opposite edges of the plate. A bracket extending across the second support portion in spaced relation thereto and welded at its laterally spaced edges to the reinforcing ribs of the metal plate provides an assembly for mounting a pair of brake shoes.
    Type: Grant
    Filed: June 26, 1985
    Date of Patent: August 22, 1989
    Assignee: Rockwell International Corporation
    Inventor: Robert J. Baroni
  • Patent number: 4858729
    Abstract: A brake spider for supporting a brake assembly on a vehicle axle which includes a mounting portion and diametrically opposed, first and second support portions, a pair of laterally spaced bores through the second support portion and mounting a pair of anchor pins, and a boss adjacent each bore and projecting from oppositely disposed surfaces of the second support portion of the brake spider.
    Type: Grant
    Filed: June 26, 1985
    Date of Patent: August 22, 1989
    Assignee: Rockwell International Corporation
    Inventors: Gary E. Crewson, David J. Pulliam
  • Patent number: 4854427
    Abstract: A stamped metal plate supports a brake assembly on a vehicle axle. The plate includes a planar and circular mounting portion having a circular aperture pressed on and welded to the axle, diametrically opposed, planar first and second support portions substantially parallel to and offset in opposite directions from the mounting portion and a pair of reinforcing ribs with each rib extending continuously along opposite edges of the plate. A bracket extending across the second support portion in spaced relation thereto and welded at its laterally spaced edges to the reinforcing ribs provides a pair of axially aligned bores mounting bushings which support anchor pins.
    Type: Grant
    Filed: June 26, 1985
    Date of Patent: August 8, 1989
    Assignee: Rockwell International Corporation
    Inventor: Robert J. Baroni
  • Patent number: 4730707
    Abstract: For automobile drum brakes of the simplex and duo-duplex forms of construction, each having two brake shoes (10) floatingly mounted on a brake bracket (1), a special support is proposed for the one end of the brake shoe web (10) of each brake shoe (8), this support being constituted basically of a support pin (26) rotatable about its central axis, which possesses a recessed bearing surface, on which a corresponding counter-surface (35) of the brake shoe web (10) is slidably journalled. The new support makes possible the maintaining of a constant brake coefficient throughout the full range of wear of the brake lining (12).
    Type: Grant
    Filed: December 18, 1986
    Date of Patent: March 15, 1988
    Assignee: Rockwell-Golde GmbH
    Inventors: David J. Edwards, Peter Baum
  • Patent number: 4716980
    Abstract: An electric rider vehicle control system is disclosed which includes a dead man brake that is normally set to prevent coasting, and controls which release the brake and permit normal transport operation of the vehicle at multiple speeds by an operator on the operator's platform. The controls also include a selector switch for selecting between such normal operation and another mode in which the brake is held in a release position by an electrical solenoid, the first controls are disabled or bypassed, and the propulsive drive is operated by jogging control switches mounted on the sides of the vehicle for convenient manipulation by an operator walking alongside. An adjustable hydraulic snubber also is provided to control brake application.
    Type: Grant
    Filed: February 14, 1986
    Date of Patent: January 5, 1988
    Assignee: The Prime Mover Company
    Inventor: Robert W. Butler
  • Patent number: 4679667
    Abstract: A brake shoe assembly incorporates unitary retainers for anchor pins about which a pair of brake shoes may pivot. In a preferred form, the anchor pin retainers are spring steel structures formed of drawn heat treated wire, each retainer defining a pair of spaced legs joined at one end by an arcuate or bowed portion adapted to engage one of a pair of spaced grooves in one of the associated anchor pins. Each brake shoe contains a web portion which includes a cradle for pivotal support against an anchor pin. Each web has a pair of apertures disposed for engagement by a hook formed at the end of each retainer leg.
    Type: Grant
    Filed: October 28, 1985
    Date of Patent: July 14, 1987
    Assignee: Dana Corporation
    Inventor: Frank W. Zawodni
  • Patent number: 4673069
    Abstract: A clamping bracket arrangement is provided which tightly grips the mounting boss of a wheel cylinder and the axle housing to which the brake assembly of which the wheel cylinder is a part is mounted, preventing movement of the wheel cylinder relative to the axle housing. The bracket arrangement may be quickly and easily installed in field service without the need for removing any parts of the brake assembly.
    Type: Grant
    Filed: March 18, 1986
    Date of Patent: June 16, 1987
    Assignee: General Motors Corporation
    Inventor: Vincent M. Staub, Jr.
  • Patent number: 4648491
    Abstract: The invention relates to a brake shoe retainer mounting assembly. The assembly has a cylindrical anchor pin with through bore. This pin is located to extend through the brake shoe and through a brake spider. A retaining washer is located at either end of the pin and the assembly is held in position by a fastener which extends through the bore.
    Type: Grant
    Filed: February 22, 1985
    Date of Patent: March 10, 1987
    Inventor: Gordon J. Taylor
  • Patent number: 4577733
    Abstract: A drum brake or clutch has a fixing member, a drum adapted to be rotatable relative to the fixing member, a pair of arcuate shoes disposed within the drum such as to come in and out of contact with the drum, an actuating device attached to the fixing member and having an actuator adapted to act on at least one end of each of the shoes, and a return spring acting such as to separate each of the shoes from the drum. The drum brake or clutch further includes a lever member pivotally attached to one end portion of each of the shoes. The lever member has one end thereof engaged with the actuator of the actuating device and the other end thereof engaged with an abutment member provided on the fixing member.
    Type: Grant
    Filed: May 31, 1984
    Date of Patent: March 25, 1986
    Assignees: Nisshin Spinning Co., Ltd., Sumitomo Heavy Industries Ltd.
    Inventors: Tadayuki Oguro, Teturo Yoshimoto, Hazime Niki
  • Patent number: 4552254
    Abstract: An improved spider assembly (46) for expanding shoe drum brakes (10) of the type utilizing cantilever mounted anchor pin members (18) is provided. The anchor pin includes a pivot surface portion (62) and a slightly enlarged headed portion (66) extending from the outboard side of the spider member (14). A specially configured washer (80) is slidably received upon the pivot surface portion of the anchor pin and is of a sufficient outer diameter (82) to axially retain the brake shoe webs (26) upon the anchor pin. The washer (80) is provided with a radially extending portion (94) and an axially extending portion (84) extending from the outer periphery of the radially extending portion at a diameter (86) greater than the outer diameter (88) of the anchor pin.
    Type: Grant
    Filed: June 22, 1983
    Date of Patent: November 12, 1985
    Assignee: Eaton Corporation
    Inventor: Gunnar Baltare