Screw And Nut Adjusting Means Patents (Class 74/841)
  • Patent number: 9687973
    Abstract: A screw releasing device with a guiding function includes a first housing, a control mechanism, and a guiding hole, the first housing defines a first receiving groove, the control mechanism is received in the first receiving groove, and includes a first cam, a second cam, and a third cam, the third cam includes a serrated member, the guiding hole receives a number of screws, and defines a first opening, when the first cam is not driven, the serrated member extends to the guiding hole via the first opening, so that the serrated member is at a supporting location and supports a bottommost screw, when the first cam is driven, the first cam drives the third cam to be not limited by the second cam and rotate, thus the serrated member is rotated to release the bottommost screw.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: June 27, 2017
    Assignees: Fu Tai Hua Industry (Shenzhen) Co., Ltd., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Chun-Xu Jin, Zhi-Yu Hu, Guo-Jun Yang, Ting-Hui Deng, Long-Fong Chen, Chung-Yuan Chen
  • Patent number: 9687255
    Abstract: Methods of creating a curvilinear cavity within a vertebral body or other bony structure and devices that may be used to perform the steps to create the curvilinear cavity. In one embodiment, a method of forming a curvilinear void in bony structure may include the steps of accessing a bony structure with a cannula, inserting a distal end of a drill device through the cannula and into the bony structure, manipulating the distal end of the drill device to create a curvilinear void in the bony structure, enlarging the void by expansion of a balloon element mounted to the drill device, and deflating the balloon element and removing the drill device from the cannula.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: June 27, 2017
    Assignee: GLOBUS MEDICAL, INC.
    Inventors: Andrew R. Sennett, Randall J. Beyreis, Brett A. Williams
  • Patent number: 9662756
    Abstract: Feed tools and methods of use for initiating a change in a spindle feed direction from an advance direction that moves the spindle towards a workpiece to a retract direction that moves the spindle away from the workpiece. The tool and methods may use a thrust overload force that is generated on one or more of the components to initiate the shift from forward to retract and/or a lift ring that acts on one or more of the components. The tool and methods may also include a two-stage piston to accomplish the shift. The various components may be used independently or in combination within the tool.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: May 30, 2017
    Assignee: Apex Brands, Inc.
    Inventors: Jeremy Watford, Kevin Myhill, Marc Djabri
  • Patent number: 9192397
    Abstract: The invention relates to a method of creating a curvilinear cavity within a vertebral body or other bony structure. The invention also relates to devices that may be used to perform the steps to create the curvilinear cavity. In one embodiment, a method of forming a curvilinear void in bony structure may include the steps of accessing a bony structure with a cannula, inserting a distal end of a drill device through the cannula and into the bony structure, manipulating the distal end of the drill device to create a curvilinear void in the bony structure, enlarging the void by expansion of a balloon element mounted to the drill device, and deflating the balloon element and removing the drill device from the cannula.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: November 24, 2015
    Assignee: Gmedelaware 2 LLC
    Inventors: Andrew R. Sennett, Randall J. Beyreis, Brett A. Williams
  • Patent number: 8941276
    Abstract: In one arrangement, a motor assembly includes a housing defining a housing chamber, a stator disposed within the housing chamber, and a rotor assembly disposed within the housing chamber. The rotor assembly includes a spindle housing defining a spindle housing chamber extending along a longitudinal axis of the spindle housing and a set of magnets disposed about an outer periphery of the spindle housing and in proximity to the stator. The rotor assembly includes a ball nut cartridge disposed within the spindle housing chamber of the spindle housing and a securing mechanism configured to secure the ball nut cartridge to the spindle housing.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: January 27, 2015
    Assignee: Bose Corporation
    Inventors: Daniel Charles Haferman, Andrew Joseph LaFosse, Christopher Alan Pare
  • Patent number: 8870156
    Abstract: The invention relates to a drive means for a slide valve having two parallel spindles (10) which are driven in rotation by at least one motor (11), travelling nuts (12) which engage the spindles (10) and are movable in the longitudinal direction of the spindles by rotation of the spindles (10), and a cross-yoke (13) which is arranged transversely with respect to the spindles (10) and is connected to the travelling nuts (12) on the one hand and to a rod (14) on the other hand, which rod is arranged in parallel between the spindles (10) and is connected or connectible to a slide plate, the rod (14) being axially movable by the motor (11) for the actuation of the slide plate. It is distinguished by the fact that the travelling nuts (12) and the rod (14) are each articulatedly connected to the cross-yoke (13).
    Type: Grant
    Filed: January 3, 2012
    Date of Patent: October 28, 2014
    Assignee: Z & J Technologies GmbH
    Inventors: Wolfgang Zingsem, Ludwig Kesternich
  • Patent number: 8770545
    Abstract: A slide gate comprising: a frame assembly which defines an opening through which fluid flows; a slide plate movably mounted to the frame assembly for vertical movement relative thereto so as to selectively open and close the opening in the frame assembly; an operating mechanism for vertically moving the slide plate between its open and closed positions so as to regulate fluid flow through the opening in the frame assembly, wherein the operating mechanism comprises a threaded operating stem which is secured to the top of the slide plate and which extends through a threaded operating nut which is rotatably mounted to the frame assembly, and means for rotating the threaded operating nut so as to cause longitudinal movement of the threaded operating stem relative to the threaded operating nut, so as to raise or lower the slide plate, whereby to open or close the opening in the slide gate; and a threaded fall-protection nut disposed on the threaded operating stem in spaced relation to the threaded operating nut
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: July 8, 2014
    Assignee: Whipps, Inc.
    Inventors: George E. Whipps, Michael R. Toomey
  • Patent number: 8161844
    Abstract: An object of the present invention is to provide a sliding device that can surely reduce damage caused by mutual sliding behavior. To achieve the object, a sliding device in which a screw bolt having a male thread and a nut having a female thread hole in which a female thread is formed on an inner circumference are screwed together in a state capable of screw rotation and applied with repeating screw rotation so that the male thread and the female thread are subjected to a sliding load, wherein when Vickers hardness of a first metal material constituting the male thread of the screw bolt is H1, and Vickers hardness of a second metal material constituting the female thread on the inner circumference of the female thread hole in the nut is H2, |H1?H2|=300 HV0.1 to 350 HV0.1 is employed.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: April 24, 2012
    Assignee: Tamron Co., Ltd.
    Inventor: Naoto Shiga
  • Publication number: 20100132506
    Abstract: A flexible connection plate is used in a feed drive mechanism. The flexible connection plate has a first portion, a second portion joined to the first portion, and a plurality of elastic grooves between the first portion and the second portion. The first portion and the second portion are fixed to a nut seat and a lead screw nut of the feed drive mechanism respectively. The elastic grooves are axially penetrating the connection plate. Adjacent elastic grooves have an overlapping section respectively, such that the flexible connection plate has a characteristic of elastic deformation in a radial direction, so as to absorb errors resulted from assembly, and improve non-parallelism resulted from the assembly errors, thereby increasing the feed accuracy of the feed drive mechanism. Furthermore, the rigidity of the flexible connection plate in an axial direction is high enough to drive the feed drive mechanism to be positioned precisely.
    Type: Application
    Filed: January 26, 2009
    Publication date: June 3, 2010
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Shih-Chang CHEN, Tzuo-Liang Luo
  • Publication number: 20090205465
    Abstract: An object of the present invention is to provide a sliding device that can surely reduce damage caused by mutual sliding behavior. To achieve the object, a sliding device in which a screw bolt having a male thread and a nut having a female thread hole in which a female thread is formed on an inner circumference are screwed together in a state capable of screw rotation and applied with repeating screw rotation so that the male thread and the female thread are subjected to a sliding load, wherein when Vickers hardness of a first metal material constituting the male thread of the screw bolt is H1, and Vickers hardness of a second metal material constituting the female thread on the inner circumference of the female thread hole in the nut is H2, |H1?H2|=300 HV0.1 to 350 HV0.1 is employed.
    Type: Application
    Filed: January 29, 2009
    Publication date: August 20, 2009
    Applicant: Tamron Co., Ltd.
    Inventor: Naoto SHIGA
  • Publication number: 20080295247
    Abstract: A lightweight, collapsible, portable, adjustable tubing structure is used upon any conventional bed to lift and support the bed covers above the desired portions of the anatomy of an occupant of the bed. The device may feature multiple adjustments, for example, vertical (height) adjustment and horizontal (width) adjustment. Preferably, all the adjustments are continuous, non-incremental adjustments to best fit the device to a given bed. The device may be made of simple and extremely durable off-the-shelf pieces, preferably of PVC pipe, bushings, tees, and elbows, plus adjustment system that comprise threaded mobs holding a nut and bolt pressure lock system. Other adjustment system may be used, such as pins, clips, fasteners, or other locks or connectors, but the adjustment knob system is most preferred because of its ease, safety, and simplicity.
    Type: Application
    Filed: May 19, 2008
    Publication date: December 4, 2008
    Inventor: DUKE V. ROGERS
  • Publication number: 20080282840
    Abstract: A nut 4 is provided inside a casing 3 through which a drive shaft 2 having a thread groove 2a is inserted. The nut 4 is meshed with the drive shaft 2. The nut 4 is provided with an internal gear 25 which surrounds the drive shaft 2. A spur gear 36 is fixed to an eccentric part 37 of an output shaft 27 of a motor 5. The spur gear 36 and the internal gear 25 are meshed with each other to form a speed reduction mechanism 6. An electromagnetic clutch 7 is fixed to the output shaft 27. The electromagnetic clutch 7 switches the operation between two operation modes. In the first mode, the output shaft 27 is connected to the nut 4 such that the nut 4 rotates at a speed equal to the rotation speed of the output shaft 27. In the second mode, the output shaft 27 is disconnected from the nut 4 such that the nut 4 is rotated while the rotation speed of the output shaft 27 is reduced by the speed reduction mechanism 6.
    Type: Application
    Filed: September 20, 2005
    Publication date: November 20, 2008
    Inventor: Toshiaki Shimada
  • Publication number: 20080202115
    Abstract: A mechanical-hydraulic machine and an integrated hybrid drive with a regenerative force assist for eliminating pumps and intensifiers and reducing the energy consumption, operating costs, investment costs, weight and size of machines and improving their performance. The integrated hybrid drive is comprised of common mechanical and hydraulic components. The regenerative hydraulic force assist converts gravitational and deceleration forces of the machine into fluid pressure, stores the fluid pressure and applies the fluid pressure to clamping of dies or molds and/or performing machine operations. A closed loop control system controls the flow of fluid between the hydraulic drive and regenerative force assist.
    Type: Application
    Filed: February 27, 2007
    Publication date: August 28, 2008
    Inventor: David Geiger
  • Publication number: 20080202286
    Abstract: A modular support (7) with holes (10) for attachment screws is equipped with a through seat (7A) with axial stop (7B) for a nut (9) capable of being received and engaged in said through seat; the modular support (7) can be utilized simply by preparing—on the load bearing structure—the threaded holes for the screws and a trace for a transverse spline, partly received in another trace (16) in the support (7).
    Type: Application
    Filed: June 7, 2006
    Publication date: August 28, 2008
    Inventor: Natale Brechelente
  • Publication number: 20080041188
    Abstract: A suds container for a washing machine includes plastic and is disposed so as to vibrate inside the machine housing, and includes first and second joint pieces. The first joint piece has a first bore therethrough and the second joint piece has a second bore therethrough aligned with the first bore. The first and second joint pieces are configured to fasten a vibration absorber with a fastening eye of the vibration absorber disposed between the joint pieces. A fastening element is at least partially received in the first and second bores and configured to fasten the vibration absorber. An S-shaped molded part is disposed on the joint pieces and includes third and fourth aligned bores and a first and a second arched area. The first arched area has a U-shape and is disposed between the joint pieces. The second arched area extends so as to overlap a free end of the first joint piece at an outer portion thereof.
    Type: Application
    Filed: August 20, 2007
    Publication date: February 21, 2008
    Applicant: MIELE & CIE. KG
    Inventors: Norbert Eckert, Benedikt Fechtel
  • Publication number: 20020133116
    Abstract: An actuating mechanism for rapidly and selectively moving a threaded screw and nut member combination into or out of threaded engagement, particularly for use to pressurize angioplasty balloon catheters, or the like. The mechanism includes a housing and a threaded screw structure slidably displaceable through the housing. A nut member having partial threads is selectively engageable and disengageable with the threaded screw structure. The mechanism includes a carrier member and is designed to be assembled from the rear. The carrier member is preferably configured to be retainably engaged with the housing via a bayonet arrangement, such as a quarter-turn bayonet arrangement, and is configured to provide an audible indication when it is, in fact, properly and fully installed. Preferably, the housing is configured to receive a pressure gauge directly into a threaded bore on the housing. An improved method of assembling an actuating mechanism is also provided.
    Type: Application
    Filed: November 9, 2001
    Publication date: September 19, 2002
    Inventors: Richard M. Davis, Rowland W. Kanner
  • Patent number: 6123426
    Abstract: A linear actuator (20) includes a frame (50) having a frame bore (52) that is threaded with an internal coarse thread (54). An antijam nut (56) is externally threaded with the coarse thread (58) and engaged to the internal coarse thread (54) of the frame bore (52) within the frame bore (52). The antijam nut (56) is also internally threaded with a fine thread (62). A first antijam nut endstop (70) is affixed to the frame (50) such that the antijam nut (56) contacts the first antijam nut endstop (70) at a first range limit within the frame bore (52). A leadscrew (64) has a first portion externally threaded with the fine thread (66) and engaged to the internal fine thread (62) of the antijam nut (56). A leadscrew support (82) is engaged to the leadscrew (64), and a rotational drive (84) is connected to the leadscrew (64). The frame (50) and the leadscrew support (82) are linearly movable relative to each other.
    Type: Grant
    Filed: January 19, 1999
    Date of Patent: September 26, 2000
    Assignee: Raytheon Company
    Inventor: Gabor Devenyi
  • Patent number: 5676019
    Abstract: A nut assembly intended for use with a lead screw in precision movement devices for compensating for harmonic error from the lead screw by utilizing one or more partial nuts which are opposed along an axis of the lead screw such that the partial nuts ride the lead screw independently. An averaging apparatus is used to hold the partial nuts such that as the partial nuts follow the harmonic error, the error is averaged through the averaging apparatus to compensate for the harmonic error allowing the resulting motion of the nuts to be substantially linear.
    Type: Grant
    Filed: January 3, 1997
    Date of Patent: October 14, 1997
    Assignee: Polaroid Corporation
    Inventors: Edwin K. Shenk, Christopher P. Ricci
  • Patent number: 5607247
    Abstract: A device for steadying a first balanced rotatable member relative to a second balanced rotatable member. A steadying tool is applied to the first balanced rotatable member while another tool precision torques the second balanced rotatable member. An element having a surface placed against the first balanced rotatable member. The element includes a faceted aperture capable of locking interaction with the steadying tool. The element also includes an axis aperture to permit torquing of the second balance rotatable member with the torquing tool. The element is configured to not disrupt the balance of the first and second balance members. The element may be fixed to the first balanced rotatable member during use.
    Type: Grant
    Filed: February 17, 1995
    Date of Patent: March 4, 1997
    Inventor: Giuseppe Lauritano
  • Patent number: 5282719
    Abstract: Blade pitch is changed by an actuator that is responsive to the relative rotation of two input members. Blade pitch is not changed when the members are rotated at the same speed. However, blade pitch is changed in one direction when a braking torque is applied to one member, and blade pitch is changed in an opposite direction when a braking torque is applied to the other member.
    Type: Grant
    Filed: May 13, 1991
    Date of Patent: February 1, 1994
    Assignee: AlliedSignal Inc.
    Inventors: Frederick B. McCarty, Thomas F. Fitzgibbon
  • Patent number: 4723455
    Abstract: An electric motor changes the output speed of a mechanically-adjustable variable speed drive apparatus by controlled bi-directional rotation of a shifting screw engaged with a centerpiece assembly. In general, the dry traction apparatus may be either of the single disk or double disk type (including modifications thereof). The motor drive shaft is co-axially aligned and coupled with the shifting screw, and includes a particular thrust bearing arrangement which accepts axial thrust in either direction generated by rotational operation of such motor. A limit switch mechanism, including a spring-loaded limit switch actuation element, also automatically controls motor operation by responding to controlled shifting of the centerpiece element. A protective shear pin and a torque arm arrangement further facilitate co-axial coupling of the motor with the shifting screw.
    Type: Grant
    Filed: October 10, 1986
    Date of Patent: February 9, 1988
    Assignee: Reliance Electric Company
    Inventor: Joseph J. Maloney
  • Patent number: 4703666
    Abstract: The linear drive device has two motors (M.sub.1,M.sub.2) firmly arranged relative to each other, one driving the nut (10), the other driving the screw spindle (20), whereby the nut (10) driven by motor (M.sub.1) is mounted axially firmly relative to the motor (M.sub.1), whereas the screw spindle (20) is driven by motor (M.sub.2) through the intermediate of a non-rotating, but axially shiftable coupling element (21).
    Type: Grant
    Filed: April 23, 1986
    Date of Patent: November 3, 1987
    Assignee: Lars International S.A.
    Inventor: Hans Fickler
  • Patent number: 4688448
    Abstract: A motorized drive is provided, of a type which includes a pair of coaxial shafts that are individually motor driven, which is especially economical to manufacture and assemble, while providing reliable operation. The drive includes coaxial shafts and upper and lower assemblies that each includes a motor mounted on a plate disposed about the shaft, a gear disposed about the shaft and driven by the motor, and a tapered bushing which couples the gear to a corresponding shaft. A coil spring disposed around the shafts presses the upper and lower assemblies apart to urge the tapered bushings into the tapered holes of the gears to couple them.
    Type: Grant
    Filed: January 27, 1986
    Date of Patent: August 25, 1987
    Assignee: ITT Corporation
    Inventors: Richard E. Hollis, Mark D. Greene
  • Patent number: 4577532
    Abstract: A device for automatic advance of a rotating tool towards a workpiece, which includes a rotating tool holder for holding a cutting tool for operation on the workpiece. A gear wheel bears against the rotating tool holder which forces it toward the workpiece. A holder is provided to secure the gear wheel with respect to the workpiece. A device associated with the rotating tool holder engages the gear wheel and rotates it as the tool holder rotates. Associated with the holder and the gear wheel is a mechanism for advancing the gear wheel towards the workpiece as the gear wheel rotates. A stop motion apparatus associated with the gear wheel and the rotating tool holder is included for stopping the rotational movement of the gear wheel. The stop motion apparatus consists of a non-rotatable cam which operates on the cam follower to disengage it from the gear wheel, stopping the rotating movement thereof during a segment of the rotation of the tool holder.
    Type: Grant
    Filed: May 22, 1984
    Date of Patent: March 25, 1986
    Assignee: O.M.C. s.n.c. di Walter & Dante Cavalli
    Inventor: Walter Cavalli
  • Patent number: 4547076
    Abstract: Soft-ice mixture, consisting of water or milk and commercially available powder, is frozen solid in a cylindrical container, then presented to a machine whereby the container is pressurized and which has an agitator that engages the surface of the solid to exert force along a narrow zone, whereby the material is locally melted. The momentarily melted material is immediately whipped by the agitator, before it refreezes. The agitator rotates at high speed (2,000 rpm) but advances into the material very slowly. For such action the agitator shaft is surrounded by an outer driver confined to rotation in one direction, with which the shaft has a splined connection, and the shaft in turn surrounds a threaded inner driver, with which the shaft has a threaded connection. For driving the agitator downward the inner driver is rotated in said direction, but slower than the outer driver; for driving it upward the inner driver is also rotated in said direction, but faster than the outer driver.
    Type: Grant
    Filed: March 11, 1985
    Date of Patent: October 15, 1985
    Inventor: Wilhelm Maurer
  • Patent number: 4454473
    Abstract: A probe utilizing electrical fields for nondestructive testing of metals is disclosed which is mounted in a hand-held portable housing, or head, having limit switches therein for restricting up and down movement of the probe. Apparatus for selectively engaging the limit switches by the probe driving mechanism, without injury to the internal parts of the head, is also disclosed. The head may be equipped with a slip ring extender also, to enable an operator to use the head in a variety of positions, and the depth setting mechanism for the probe is protected against inadvertent movement during continued usage of the head.
    Type: Grant
    Filed: July 13, 1981
    Date of Patent: June 12, 1984
    Assignee: Magnaflux Corporation
    Inventor: Peter J. Rosauer
  • Patent number: 4442725
    Abstract: The present invention mainly relates to a shock absorbing apparatus for travelling a table or tool rest in machine tools such as a grinding machine, a lathe, a milling machine, a planer, and a drilling machine, wherein staged notch section is formed at both a feed nut travelling in engagement with a feed screw shaft of a table or a tool rest and an engaging bracket placed below said table or said tool rest or a bushing member fixed together with said engaging bracket a sliding collar having a notched section in order to engage with said corresponding notch section is located between said feed nut and said engaging bracket or said bushing member, one end of said sliding collar is formed as to be projected from the outer extreme end of the same side of said feed nut in order to make it possible that a spring receiver is mounted, thereby causing a hollow section to be formed between said sliding collar itself and the extreme end of said feed nut at the same side, and the other end of said sliding collar is so fo
    Type: Grant
    Filed: May 26, 1981
    Date of Patent: April 17, 1984
    Assignee: Shigiya Machinery Works, Ltd.
    Inventor: Hirokuni Urabe
  • Patent number: 4421183
    Abstract: Apparatus is provided for penetrating boreholes in oil wells. The apparatus includes a shaft rotatable by power means. First means may be operatively associated with the shaft and a rod to obtain a rotation of the rod by the shaft. Second means obtain a linear movement of the rod at each instant in accordance with a load imposed upon the rod at that instant. The second means may include means providing a slippage between the rotary movements of the shaft and the linear movements of the rod in accordance with the load on the rod. Third means are operatively coupled to the rod and are adaptable in configuration and position in accordance with the configuration of the bore hole to be penetrated. The third means may include an outer casing, a flexible boom movable within the outer casing and resilient means disposed within the flexible boom and movable within the outer casing. Means may rotate the resilient means in accordance with the rotation of the rod.
    Type: Grant
    Filed: April 1, 1981
    Date of Patent: December 20, 1983
    Inventor: Earl R. Collins, Jr.
  • Patent number: 4292722
    Abstract: In a lead screw drive, such as that used in a lightweight lathe or milling machine for driving the workpiece relative to the cutting tool, the core of a drive nut is made of a material having a relatively low melting temperature, such as babbitt metal or a relatively rigid thermoplastic material. The low melting point material is contained within a nut housing as of steel. The openings in the nut housing for passage of the lead screw are scaled in a fluid type relation by means of elastic sealing members as of silicone rubber having a melting point above that of the relatively low melting point core portion of the nut. An electrical heating cartridge element is contained within the nut housing in good thermally conductive relation with the low melting point core material.
    Type: Grant
    Filed: August 13, 1979
    Date of Patent: October 6, 1981
    Assignee: Pacific Western Systems, Inc.
    Inventor: Daniel A. Worsham
  • Patent number: 4241623
    Abstract: A vertical drive mechanism is provided for a cutting apparatus. The cutting pparatus can be used for in place machining of a valve seat which may include an annular turntable adapted to be rotatably mounted on the valve above the valve seat. A feed shaft is mounted through the turntable so as to be rotatable therewith, and a bottom of the feed shaft is adapted to receive a cutter for machining the valve seat. The vertical drive mechanism is mounted on the feed shaft and includes a nut threaded on the feed shaft and a gear combination. The gear combination may include a first portion which is fixedly connected to the nut, a second portion which operatively engages the first gear portion, and a third portion which operatively engages the second gear portion, the third gear portion being mounted for rotatable slidable friction engagement about the nut.
    Type: Grant
    Filed: June 6, 1979
    Date of Patent: December 30, 1980
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: John F. Wilger, Gregory S. Nakano, Tadao Uyetake, Stephen Orillo, Jr., Teikichi Higa
  • Patent number: 4000661
    Abstract: A mechanical quill and spindle drive mechanism is disclosed wherein the quill is advanced by means of a screw formed about its periphery and cooperating with a driven ball nut. The quill is received within a housing bore and accurately guided for longitudinal movement thereby by means of a sliding engagement with bore surfaces on either side of the nut. The spindle is carried by the quill throughout its longitudinal movement and is rotated by means of a splined drive shaft which maintains a rotative connection therewith by means of a splined connection therebetween.
    Type: Grant
    Filed: February 3, 1975
    Date of Patent: January 4, 1977
    Assignee: Bendix Machine Tool Corporation
    Inventor: Klaus Menzel
  • Patent number: 3955629
    Abstract: This application discloses an improved quill feed unit of the type used in automatic or semi-automatic machines for holding and advancing the tool during the machining operation, wherein the rapid advance, feed, and rapid retract movements present in each machine cycle are performed entirely mechanically.Previously, substantially all of such guill feed units have been operated by the use of a hydraulic or pneumatic power, or a combination thereof, i.e., a hydraulic or pneumatic cylinder would advance and retract the tool, while a suitable motor would rotate the tool.Despite efforts to solve them, severe problems were and are still encountered with these units. Problems such as leakage, poor start up, tool breakage and ease of tampering are commonplace.
    Type: Grant
    Filed: November 28, 1972
    Date of Patent: May 11, 1976
    Inventor: Frank W. Turner
  • Patent number: RE31627
    Abstract: A quill drive comprising a housing adapted for mounting on machine tools. A quill is slidably mounted in a longitudinal bore in the housing, and is longitudinally positioned by a ball screw. The ball screw is driven for longitudinal positioning of the quill by a variable speed, reversible motor. The quill rotatably supports a spindle for driving various cutting tools. The spindle is advanced longitudinally by the quill and is rotatably driven by a second motor. The quill drive can be used singly or in a multiple arrangement on transfer machines or other automatic equipment. The unique design has fewer parts resulting in a simple reliable, relatively inexpensive device which is compact and easy to use. A relatively simple modification of the gear box converts the quill drive into a drive for tapping threaded holes.
    Type: Grant
    Filed: December 7, 1981
    Date of Patent: July 10, 1984
    Assignee: The Gleason Works
    Inventor: Larry Evans