Circular Spring Patents (Class 29/229)
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Patent number: 4919017Abstract: A hose clamp tool has juxtaposed jaws on one end of elongated members, one of which slides within the other to move the jaws toward each other to force the lugs of a hose clamp toward each other. That expands the circular part of the clamp, allowing it to fit over the end of a hose. Longitudinal movement of one elongated member relative to the other is accomplished by a handle pivotally mounted on one of the members extending toward the jaws. One end of a link is pivotally connected to an intermediate part of the handle, and the other end of the link is pivotally connected to the other member.Type: GrantFiled: January 27, 1989Date of Patent: April 24, 1990Inventor: William E. Thomas
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Patent number: 4873754Abstract: An articulated, self-aligning tool for removing radial retaining rings from grooved surfaces is disclosed. Said tool comprises two resilient, integral prongs adapted to be moved from each other by the application of force wherein said prongs are substantially separated from each other by an orifice and a slit appearing therebetween and wherein said slit communicates said orifice. The tool is also comprised of means for maintaining said prongs in parallel, in-line relation to each other.Type: GrantFiled: August 12, 1988Date of Patent: October 17, 1989Inventor: Vernon E. Gleasman
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Patent number: 4862572Abstract: A tool for installing and removing both internal and external large retaining rings. The tool includes a pivotally interconnected pair of lever arms. Each lever arm includes a retainer ring engagement tip. The tool further comprises a lever arm actuator including a shaft to which one of the lever arms is threadably connected and the other is axially fixed. The actuator includes a crank coupled to the shaft for rotating the shaft.Type: GrantFiled: June 2, 1988Date of Patent: September 5, 1989Assignee: Milbar CorporationInventors: James R. Jeromson, Jr., J. E. C. Anderson
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Patent number: 4856169Abstract: An apparatus is disclosed for compressing a retainer ring to reduced assembly size and maintaining the compressed ring assembly size at an assembly location by internal containment means. The apparatus typically includes a ring compressing assembly for compressing the ring from the exterior and mandrel means disposed in the compressing means and around which the ring is compressed to assembly size. The mandrel means includes a lug-retaining groove means into which retainer ring lugs having special flats are compressed and retained interiorly of the ring to hold the ring at reduced assembly size. The compressed retainer ring is carried to the assembly location outside the compressing means on the mandrel means and is stripped from the mandrel means for final assembly internally in a part. The ring compressing assembly is carried on a first slide for movement between a ring load position and a ring assembly position.Type: GrantFiled: July 14, 1988Date of Patent: August 15, 1989Assignee: Micro-Precision Operations Inc.Inventor: Deryll Liechty
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Patent number: 4793224Abstract: An improved combination retaining ring fitting tool comprising a pair of handles pivoted together at the joint center and having studs on both sides, and a pair of removable jaws pivoted together at the joint center and having stud holes, and connected by a pivot bolt so that when the handles are pressed together, the jaws will open or close to expand or pinch a retaining ring as an expander or pincher.Type: GrantFiled: June 3, 1987Date of Patent: December 27, 1988Inventor: Hsin-Teh Huang
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Patent number: 4790056Abstract: A universal retaining ring tool that is shiftable between internal and external modes of operation. The tool includes a pair of pivotally connected handles, a pair of jaw members selectively coupled to the handles by a latching arrangement including two transversely slidable latch members. In one position of the latch members one handle member is coupled to one jaw member and the other handle is coupled to the other jaw member. When the latch members are switched, the one handle is coupled to the other jaw member and the other handle is coupled to the one jaw member. Removable tips are secured to each jaw member by an associated clamping plate that includes a corner that diverges from the overall plane of the clamping plate towards the associated jaw member. The fastener for securing the clamping plate is critically so that a positive clamping force is exerted on the tip in a region where it enters the jaw.Type: GrantFiled: July 14, 1986Date of Patent: December 13, 1988Assignee: Milbar CorporationInventor: J. Edward C. Anderson
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Patent number: 4776245Abstract: A readjustable pair of pliers for mounting circlips has a handle which with the aid of a sidewardly bent attachment part is pivotally connected to an intermediate member carrying a jaw with an engagement pin. A second jaw carrying an engagement pin is rigidly connected with a second handle defining therewith a rigid unit to which said intermediate member is pivotally attached. The attachment part is defined by a parallelepipedic block tightly fitting in a corresponding groove in the intermediate member. By swinging the second handle through 180.degree. relative the intermediate member the mode of operation of the pair of pliers is altered in dependence on if a circlip for inner or for outer mounting has to be served.Type: GrantFiled: June 3, 1987Date of Patent: October 11, 1988Assignee: Devex Industridetaljer ABInventor: Arne Gustavsson
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Patent number: 4757590Abstract: This invention relates to a set of tools for removing lugless snap rings from the internal annular grooves provided therefor in parts containing internal bores, these tools consisting of a pointed tool for making an indentation in the base of the groove between the ends of the ring, a plunger-actuated ball magazine for placing a ball in the indentation thus formed preparatory to driving the ring aroung in its groove until one of its ends rides up upon the ball to create a gap therebeneath, a clamping tool for holding the ring in its groove against further relative rotation, a wedge for movement into the gap underneath the raised end of the ring, and a wedge-driving subassembly for moving the wedge into the gap to a point where the raised end of the ring is free of the groove and in position to be grasped and removed.Type: GrantFiled: November 10, 1986Date of Patent: July 19, 1988Inventors: Norman P. Hull, Norman D. Hull
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Patent number: 4757591Abstract: This invention relates to an internal snap ring removal tool which is characterized by a first cylindrically-surfaced clamp-forming element clampable onto a surface of the snap ring exposed outside its groove while the cylindrical surface of the aforesaid element lies in essentially tangent relation to the bore of the part containing the snap ring, and an eccentrically-bored collar that encircles the clamp-forming element for relative rotation therearound in contact with the bore of the part housing the snap ring thereby camming the snap ring free of its groove.Type: GrantFiled: November 10, 1986Date of Patent: July 19, 1988Inventors: Norman P. Hull, Norman D. Hull
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Patent number: 4744132Abstract: An improved lock ring and spreader tool affording a method of removing the lock ring from a circumferential groove on a rim, the lock ring serving to retain a tire flange in position on the rim, the lock ring being split with juxtaposed ends each having a slot therein, the bottom of the slots being of concave configuration, and a spreader tool having opposed jaws, the jaws being receivable in the slots in the lock ring and the jaws having convex surfaces thereon, the spreader tool jaws being moveable apart so that the tool when inserted in the slots in the lock ring, serves to force the ends thereof apart, expanding the diameter of the lock ring and permitting its expeditious removal from the circumferential groove.Type: GrantFiled: November 10, 1986Date of Patent: May 17, 1988Assignee: Unit Rig & Equipment CompanyInventors: George O. Greene, Jimmy G. Foster, Jim Hein
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Patent number: 4710037Abstract: An improved bearing retainer structure having a hub supporting an annular bearing in which a shaft can be journaled, a preselected space being provided between the outer periphery of the bearing and the inner wall of the hub to receive an expansible-compressible fastening device which retains the bearing in position to enhance the resistance to torsional, axial and radial thrusts.Type: GrantFiled: September 4, 1986Date of Patent: December 1, 1987Assignee: Emerson Electric Co.Inventor: Barry M. Newberg
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Patent number: 4702001Abstract: Pliers for installing retaining rings comprising a pair of levers connected to each other by a sleeve bearing. Each lever has an actuating shank on one side of the sleeve bearing and a tool shank engageable with the retaining ring on the other side of the sleeve bearing. One of the tool shanks is connected by way of the sleeve to one of the actuating shanks and the other tool shank is connected by way of the shaft of the sleeve bearing to the other acutating shank.Type: GrantFiled: April 16, 1986Date of Patent: October 27, 1987Assignee: Seeger-Orbis GmbHInventors: Rune Malm, Radu Mihalcea
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Patent number: 4697483Abstract: A tool comprising two jaws, the first jaw having a seat for receiving a shaft to which a split ring clip is to be attached or detached, and the second jaw having a head with two selective indexed positions, the first position for detaching the clip and having prong means adapted to contact the ends of the clip, and the second position for attaching the clip and including a seat for holding the clip with its open side facing the first jaw, a receptacle to catch the clip when detached, and means for moving said jaws together in meshing relationship.Type: GrantFiled: December 12, 1985Date of Patent: October 6, 1987Inventor: Herman R. Rodgers
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Patent number: 4689865Abstract: A tool for selectively installing or removing snap rings and C-rings wherein a pair of elongated, spaced, parallel, spring-biased arms are pivotally connected to a mounting plate. One end of each arm has an axially extending pin insertable into the apertures of a conventional snap ring and the opposite end of each arm is provided with a recess adapted to receive the free ends of a conventional C-ring. By squeezing the recessed ends of the arms in a direction toward each other, the pin ends of the arms are moved outwardly relative to each other to thereby spread a snap ring mounted thereon for external mounting to an operative position. By squeezing the pin ends of the arms in a direction toward each other, the recessed ends are moved outwardly relative to each other to thereby spread a C-ring mounted thereon.Type: GrantFiled: October 14, 1986Date of Patent: September 1, 1987Inventor: Henry F. Chamblee
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Patent number: 4667399Abstract: An applicator for installing a radially installed spring retaining ring into an external groove of a shaft comprises a ramp having a slot for receiving a groove shaft. The ramp also includes a pair of opposed side walls between which the rings travel. Each ring includes a pair of flats arranged to guidingly engage the side walls to prevent the ring from rotating as it advances along the ramp.Type: GrantFiled: July 25, 1985Date of Patent: May 26, 1987Assignee: Waldes Truarc, Inc.Inventor: Wallace H. Berliner
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Patent number: 4654944Abstract: A generally cylindrical adapter which may be used with a conventional C-clamp valve spring compressor is made of a material such as nylon which will not scratch the cam follower bore of an overhead cam engine. The adapter has a groove in its upper portion for connecting to the jaw assembly of the C-clamp compressor, and has a flat annular lower end face for applying the compressing force from the C-clamp compressor to the valve spring assembly. As the compressing force is applied, the valve stem will be received in a central axial opening in the adapter, until the collets become accessible through lateral openings or access ports in the lower portion of the adapter. The collets may thus be removed through the lateral openings for disassembly of the valve spring assembly or may be returned to the valve stem through the lateral openings for reassembly. The adapter provides sufficient clearance so that the C-clamp compressor may be used to compress the valve spring of an overhead cam engine.Type: GrantFiled: September 13, 1985Date of Patent: April 7, 1987Inventor: Richard W. Graf
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Patent number: 4638541Abstract: A tool kit is provided for repairing the snap ring grooves of a cam follower bore in a diesel engine cylinder head without removing the cylinder head from the cylinder block. The tool kit includes a cutting tool which will both enlarge the cam follower bore to allow the use of an oversized spring retainer and cut an enlarged snap ring groove to allow the use of a more substantial plate-type snap ring. A snap ring installation tool allows for easy placement of the snap ring in the cam follower bore. A concentric wrench having concentric yet independently movable sockets for quick valve and fuel injector clearance adjustment is included.Type: GrantFiled: June 22, 1984Date of Patent: January 27, 1987Inventor: Edward F. Schindler, Jr.
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Patent number: 4633558Abstract: A tool for applying a spring clamp comrising a pair of handles, a pin joining said handles for relative rotation, a pair of jaws on said handles, a cam carried by one of the jaws and a pair of side plates pivotally supported by the other of said jaws having cam control tracks therein for effecting and controlling radial movement of said cam to complete closure of said clamp.Type: GrantFiled: February 27, 1986Date of Patent: January 6, 1987Assignee: Wittek Industries, Inc.Inventor: George E. Spaulding
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Patent number: 4625379Abstract: A universal retaining ring tool that is shiftable between internal and external modes of operation. The tool includes a pair of pivotally connected handles, a pair of jaw members selectively coupled to the handles by a latching arrangement including two transversely slidable latch members. In one position of the latch members one handle member is coupled to one jaw member and the other handle is coupled to the other jaw member. When the latch members are switched, the one handle is coupled to the other jaw member and the other handle is coupled to the one jaw member. Removable tips are secured to each jaw member by an associated clamping plate that includes a corner that diverges from the overall plane of the clamping plate towards the associated jaw member. The fastener for securing the clamping plate is critically located so that a positive clamping force is exerted on the tip in a region where it enters the jaw.Type: GrantFiled: November 8, 1984Date of Patent: December 2, 1986Assignee: Milbar CorporationInventor: J. Edward C. Anderson
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Patent number: 4621401Abstract: A universal retaining ring tool that is shiftable between internal and external modes of operation. The tool includes a pair of pivotally connected handles, a pair of jaw members selectively coupled to the handles by a latching arrangement including two transversely slidable latch members. In one position of the latch members one handle member is coupled to one jaw member and the other handle is coupled to the other jaw member. When the latch members are switched, the one handle is coupled to the other jaw member and the other handle is coupled to the one jaw member. Removable tips are secured to each jaw member by an associated clamping plate that includes a corner that diverges from the overall plane of the clamping plate towards the associated jaw member. The fastener for securing the clamping plate is critically located so that a positive clamping force is exerted on the tip in a region where it enters the jaw.Type: GrantFiled: August 13, 1985Date of Patent: November 11, 1986Assignee: Milbar CorporationInventor: J. Edward C. Anderson
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Patent number: 4592122Abstract: An applicator for installing a retaining ring into an external groove of a workpiece comprises a floor having a slot for receiving a grooved workpiece. A pair of groove locators are rotatably mounted alongside the floor. The groove locators have forwardly converging side edges against which the rings engage as they are being pushed forwardly. Such engagement pushes the locators apart whereby forward free ends of the locators are displaced out of the workpiece groove by an advancing ring. The side edges are arranged to impose relatively small forces tending to close the ring, and to retain the ring in contact with the floor.Type: GrantFiled: June 25, 1985Date of Patent: June 3, 1986Assignee: Waldes Truarc, Inc.Inventor: John Sikula
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Patent number: 4577382Abstract: A tool for installing and removing snap rings (40) of the type which includes a pliers-like implement (10) whose jaws (12b,14b) are separated when handgrip members (12a,14a) are urged together, includes a narrow projection (36) mounted on one jaw (12b) for extending into a snap-ring hole (38) on one side of a snap-ring break (46), and a slot (42) on the other jaw (14b) into which a break edge (44) of the snap ring (40), on the other side of the break (46), fits. The narrow projection (36) is angled away from the opposite jaw (14b) and the slot (42) is narrower at one end than the other. The pliers-like implement (10) basically includes two arms (12,14) each forming a handgrip and a jaw, a circular-shaped fulcrum member (16) about which the two arms (12,14) pivot, and at least one circular spring (18,20) for biasing the two arms (13,14) together on the fulcrum member (16) and for preventing the fulcrum member (16) from migrating away from its desired fulcrum position.Type: GrantFiled: January 11, 1983Date of Patent: March 25, 1986Assignee: Harold K. McIntireInventor: David E. Weglage
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Patent number: 4575933Abstract: Ring travelers supplied on a magazine strip are transferred to a magazine bar by pulling at the magazine strip in a predetermined direction. At its front end the magazine bar is bent-off at right angles and is tapered in order to form a hook at this location for placing a momentarily preparatory-held ring traveler onto the annular flange of a spinning or twisting ring. The preparatorily-held ring traveler is clamped between the hook and a separator element in a tongue-like manner. The separator element is connected to a housing structured as a handle by means of a pivotable support. To mount the ring traveler at the angular flange of the spinning or twisting ring the handle-like housing must be retracted, and during this retraction the magazine bar which is mounted at a slide is pulled out from the housing against the force of a spring.Type: GrantFiled: October 1, 1984Date of Patent: March 18, 1986Assignee: Bracker AGInventor: Andreas Neff
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Patent number: 4573252Abstract: An open ended cylindrical sleeve is provided including a washer secured over one axial end of the sleeve in any convenient manner such as by welding and the washer is of an outside diameter greater than the outside diameter of the sleeve and of an inside diameter less than the inside diameter of the sleeve.Type: GrantFiled: November 19, 1984Date of Patent: March 4, 1986Inventor: Robert W. Shay
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Patent number: 4563804Abstract: An air conditioning compressor retaining ring removal and installation tool which when inserted into an installed retaining ring and twisted releases the retaining ring from its housing. The tool has an angled, off-center pin projecting from one end thereof for receipt in the hole in an end of the C-shaped ring.Type: GrantFiled: March 4, 1983Date of Patent: January 14, 1986Assignee: Draf Industries, Inc.Inventor: Thomas W. Alesi
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Patent number: 4550485Abstract: An applicator for installing a retaining ring into an external groove of a workpiece comprises a base plate forming a ramp. A forward end of the ramp includes a slot for receiving a groove workpiece. A groove locator is mounted on the base plate for movement between a locating position within the groove of the workpiece, and a retracted position. The groove locator is yieldably biased to its locating position. A pusher is mounted for sliding movement along the ramp for pushing a retaining ring forwardly into engagement with a cam face of the locator to cam the locator to its retracted position as the retaining ring enters the groove of the workpiece.Type: GrantFiled: February 13, 1984Date of Patent: November 5, 1985Assignee: Waldes Kohinoor, Inc.Inventor: Edmund F. Killian
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Patent number: 4539873Abstract: A multi use tool having a pair of links pivoted to one another by a pivot intermediate the ends, cooperating inwardly facing jaws adjacent one end of the links, the jaws operable toward one another to grip an object, separation jaws adjacent the opposite end of the links, a handle formation defined on each link between the jaws and the pivot and a spring for biasing the jaws apart and the separation jaws together, whereby squeezing the handle formation will move the jaw toward one another and the separation jaws away from one another.Type: GrantFiled: November 30, 1983Date of Patent: September 10, 1985Inventor: Melvyn N. Freed
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Patent number: 4524505Abstract: A method of assembling a pipe joint uses a bearing ring with closure nuts and spreader nuts. The closure nuts are used to fix the ring to a spigot, which then has a socket disposed around it. The closure nuts are loosened such that the ring expands in diameter to seat in a groove in the socket. The spreader nuts are then used to expand the ring further to be securely within the groove.Type: GrantFiled: November 1, 1983Date of Patent: June 25, 1985Assignee: American Cast Iron Pipe CompanyInventor: Randall C. Conner
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Patent number: 4514889Abstract: A tool (30) for facilitating insertion or removal of a C-shaped spring clip in a burnable poison rod, or the like, includes an outer member (38) secured to a front handle (32) and an inner member (40) extending through the outer member and the front handle which is connected to a coaxial rear handle (34). The handles (32, 34) are interconnected for relative rotation by means of a set screw (64) and circumferential groove (56). The distal ends of the inner and outer members (38, 40) are notched to receive the spring clip and engage it for compression. Provided between the handles (32, 34) is a locking and release assembly (42) and an adjustable positioning ring (58) by which the spring clip can be compressed, locked in compressed condition for insertion, and then released in the desired position before withdrawing the tool.Type: GrantFiled: November 3, 1983Date of Patent: May 7, 1985Assignee: Westinghouse Electric Corp.Inventors: Stephen J. Ferlan, Leonard T. Gesinski
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Patent number: 4501054Abstract: A hand held tool for installing compression rings includes a pair of relatively reciprocable coaxial cylindrical independently spring biased elements housed within a cylindrical handle which includes mode control means automatically preconditioned for enabling the tool to perform either an installation or ejection operation. The mode control means includes a cylindrical radial cavity containing plural spring biased spherical ball detents and extends into corresponding portion of the outer reciprocable element. The positioning of a tapered central section of the inner reciprocable element coincides with the cavity so that one of the spherical ball detents normally sits within a hollow defined by the taper. When one spherical ball detent, in response to the mode control means being preconditioned by depressing a front end or shaft portion of the inner element, is positioned to lock the outer member to the handle, this allows the ring to be installed onto the cam shaped front end of the outer element.Type: GrantFiled: September 29, 1983Date of Patent: February 26, 1985Assignee: Honeywell Information Systems Inc.Inventor: Thomas A. Morgan
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Patent number: 4476750Abstract: A convertible retaining ring pliers includes a pair of jaws and a pair of handles all rotatable independently about a common pivot. Each jaw includes a transverse bore spaced from and parallel to the pivot axis for receiving an elongated cylindrical latching pin. Each handle has an associated end plate disposed on one side of the jaws, the end plates having holes to selectively receive an end of a latching pin to selectively latch a jaw to a respective handle. The latching pin bores have elongated grooves and the latching pins have associated friction springs with projecting tabs coacting with those grooves to retain the pins within the assembled pliers. Elongated retaining ring tips have hexagonal shanks received in multi-sided jaw recesses to retain the tips against rotation and to enable selected rotational orientation of the tips.Type: GrantFiled: June 7, 1983Date of Patent: October 16, 1984Inventor: James W. Murphy
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Patent number: 4475276Abstract: A snap ring removal tool is adapted for removing a split snap ring from a cylindrical shaft. The tool has a receptacle at the end of a handle for holding the shaft lengthwise and ring-engaging means connected to the handle for engaging the snap ring at points on opposite sides of the split in the ring. Urging the ring-engaging means transversely toward the shaft pushes the ring off of the shaft. In one embodiment, the tool comprises a unitary pry bar-like member having a head portion which is laterally offset from a handle portion. The head portion has a longitudinal slot extending toward the handle a short distance to define a shaft receptacle between two parallel legs. A U-shaped shaft guide depends from the ends of the legs. The ring-engaging means is defined by the ends of the legs. A second embodiment is a pliers-like tool which includes two intersecting elongated members pivotally connected together at their intersection.Type: GrantFiled: October 21, 1983Date of Patent: October 9, 1984Assignee: Helen DonaldsonInventor: Harold D. Staten
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Patent number: 4454642Abstract: An apparatus for compressing a retainer ring to reduced assembly size and maintaining the compressed assembly size at an assembly location by internal containment of the retaining ring lugs is provided. The apparatus typically includes a compressing member for compressing the ring from the exterior and mandrel member disposed in the compressing member and around which the ring is compressed to assembly size. The mandrel member includes a lug-retaining groove into which retainer ring lugs having special flats are compressed and retained interiorly of the ring to hold the ring at reduced assembly size. The compressed retainer ring is carried to the assembly location outside the compressing member on the mandrel member and is stripped from the mandrel member for final assembly internally in a part.Type: GrantFiled: March 26, 1982Date of Patent: June 19, 1984Assignee: Ex-Cell-O CorporationInventor: Deryll Liechty
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Patent number: 4433462Abstract: These tools efficiently and rapidly remove a snap ring and clips by initially applying a torque thereto along the length of the flat portion of the clip or along the annular length of the ring. When such rings and clips are thus stressed to a limited degree they exhibit resilient twisting or torsion about such axis. The tools are adapted to then displace the portion of the smap ring or clip that provides a locking action on the groove to which the ring or clip was attached in a direction in part at least perpendicular to the wide flat surface of the portion of the snap ring or clip in the vicinity of that then resiliently twisted portion of the ring or clip and so move that portion of the ring that initially provided locking action on the groove therefor in a direction parallel to or along the wider initial plan or surface of the snap of the snap ring or clip surface. Such movement controllably and readily disengages the locking portion of the snap ring or clip.Type: GrantFiled: November 16, 1981Date of Patent: February 28, 1984Inventor: Stratton, Thomas A.
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Patent number: 4416045Abstract: A snap ring removal tool is adapted for removing a split snap ring from a cylindrical shaft. The tool has a receptacle at the end of a handle for holding the shaft lengthwise and ring-engaging means connected to the handle for engaging the snap ring at points on opposite sides of the split in the ring. Urging the ring-engaging means transversely toward the shaft pushes the ring off of the shaft. In one embodiment, the tool comprises a unitary pry bar-like member having a head portion which is laterally offset from a handle portion. The head portion has a longitudinal slot extending toward the handle a short distance to define a shaft receptacle between two parallel legs. A U-shaped shaft guide depends from the ends of the legs. The ring-engaging means is defined by the ends of the legs. A second embodiment is a pliers-like tool which includes two intersecting elongated members pivotally connected together at their intersection.Type: GrantFiled: December 14, 1981Date of Patent: November 22, 1983Assignees: Helen Donaldson, Melody J. Donaldson, Tracey Donaldson DeckerInventor: Harold D. Staten
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Patent number: 4368569Abstract: A tool for manipulating standard resilient hose clamps is in the form of a flat plate with a keyhole-shaped opening adapted to receive the radial ends of the clamp.Type: GrantFiled: February 23, 1981Date of Patent: January 18, 1983Inventor: John Van Dam, Jr.
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Patent number: 4351097Abstract: Hydraulic pliers useful for mounting and dismounting snap rings (otherwise called C-shaped stop rings) of large nominal diameter. They comprise a hand-holdable plier main body having working fluid contained therein, a hydraulic piston mechanism contained in the plier main body and adapted to be moved by hydraulic forces exerted by manual pumping operation effected by gripping action applied from outside, and a working-pin opening and closing mechanism mounted on a plier head for operative connection to the hydraulic piston and adapted to be opened or closed in the same plane and at right angles to the directon of movement of the hydraulic piston as the latter advances. The hydraulic pliers do not require any accessory equipment and are handy to carry. Thus, they are designed to expand or contract snap rings of large diameter lightly and efficiently by their hydraulic force.Type: GrantFiled: June 24, 1980Date of Patent: September 28, 1982Inventors: Seiichi Hashimoto, Takaaki Aoki
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Patent number: 4316315Abstract: This invention relates to a pair of double acting circlip pliers which consists of two jaw members which are pivotally connected intermediate their ends so that the free ends of the jaw members define first and second pairs of jaws on opposite sides of the pivot. The pliers further includes a pair of handle members which are freely rotatable about the pivot and adapted by means of suitably positioned formations to engage the first pair of jaws to operate the second pair when the handles are rotated towards each other in one direction and to engage the second pair to operate the first when the handles are rotated towards each other in the opposite direction.Type: GrantFiled: January 29, 1980Date of Patent: February 23, 1982Inventor: Josko Vogelnik
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Patent number: 4280265Abstract: Retaining ring pliers having coplanar jaws independently and movably secured and handles independently and rotatably secured about the pivot. Fulcrum pins slideably disposed in each of the jaws being equal distance from the pivot. The pins may alternately engage first handle and first jaw and second handle and second jaw and be reversed such that the first handle engage the second jaw and the second handle engage the first jaw.Type: GrantFiled: September 10, 1979Date of Patent: July 28, 1981Inventor: James W. Murphy
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Patent number: 4277872Abstract: This tool is for the placement and removal of "E" type, and hairpin type, clips, that are used on mechanical devices, such as carburetors on gasoline engines. It consists primarily of a handle with a shank having a pair of magnetic blades, one of which includes a tooth for removing a clip from linkage.Type: GrantFiled: December 13, 1979Date of Patent: July 14, 1981Inventor: Joe Lewis
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Patent number: 4260357Abstract: This invention relates to a ring form of a rigid and durable material with a metal insert arranged in its passageway. The ring is employed to strip thin walled gelatin capsules from capsule-forming pins which are slightly tapered along their entire length.Type: GrantFiled: February 15, 1980Date of Patent: April 7, 1981Assignee: Lilly Industries LimitedInventors: William G. Roast, Geoffrey E. Adnams
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Patent number: 4184240Abstract: The present invention relates to a foot-actuated press assembly adapted to hold and operate upon an automotive gear reduction starter drive assembly having a housing with a gear reduction shaft rotatable between two bore bushings therein. The foot-actuated press assembly includes a frame and a support plate coupled to the frame. A pair of alignment dows are coupled to the support plate for engaging bolt holes located in the starter drive housing for locating a rotational axis of the gear reduction shaft in known registration with the frame. A locking device is coupled to the support plate for being movably juxtaposed adjacent to the support plate for locking the starter drive housing therebetween.A plunger rod is movably coupled to the frame in registration with the alignment dows for operatively coupling with and exerting an axial pressure on the gear reduction shaft in a direction toward the support plate.Type: GrantFiled: March 17, 1978Date of Patent: January 22, 1980Inventor: Thomas M. Donahoe
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Patent number: 4182018Abstract: A cylindrical pressure vessel is placed under an inward prestress to resist outward forces by the application of outwardly spread annular stressing means which are then permitted to bear inwardly upon the vessel. The device includes fluid-pressure means for relieving the inward force during the application of the annular means so that at least one ring of the latter can expand outwardly and then contracted on the periphery of the vessel.Type: GrantFiled: April 7, 1978Date of Patent: January 8, 1980Assignee: Siempelkamp Giesserei GmbH & Co.Inventor: Lothar Gulicher
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Patent number: 4175310Abstract: A tool for facilitating removal or insertion of spring type snap rings mounted in either an internal or external groove on a member includes a relatively small end section insertable into hard-to-reach locations such as deeply into an internal bore. An elongated pin extending outwardly from the end section is inserted within an eyelet of the snap ring. The tool is rotated about its longitudinal axis with the end section reacting against the member carrying the snap ring. Due to the offset relation of the pin to this axis, the pin is displaced radially to force the end of the snap ring out of its groove to facilitate removal of the snap ring.Type: GrantFiled: July 5, 1977Date of Patent: November 27, 1979Inventor: William R. Boyd
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Patent number: 4135284Abstract: Disclosed is a hand tool for mounting and removing split retaining rings on a shaft consisting of plier-like grip handles pivoted on a base plate, said base plate having a hole therethrough to accommodate the shaft. An abutment means is provided on the end of the base plate adjacent the hole and a moveable camming device faces the abutment means on the opposite side of the hole. The retaining ring is gripped between the abutment means and the camming device, and the ring is expanded to accommodate the shaft by the movement of the camming device into the split of the ring and toward the abutment means.Type: GrantFiled: November 22, 1977Date of Patent: January 23, 1979Assignee: Iwata Electric Works, Ltd.Inventor: Yakayuki Nakamoto
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Patent number: 4127924Abstract: A miniature electrical connector comprising an insulative body having spaced, parallel connector pins extending therethrough and held in place by a combination of abutment surfaces on the pins and block, and "C" rings on the pins. In assembling the connector, the "C" rings are formed as part of a metal stamping, and are urged as a unit onto corresponding ones of the pins extending through the body. The "C" rings are released from the stamping by bending the latter along suitably formed fracture lines.Type: GrantFiled: June 6, 1977Date of Patent: December 5, 1978Inventor: Milton I. Ross
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Patent number: 4091521Abstract: A resilient ring-shape rod seal is to be installed in a rod seal groove in a cylinder in position to seal against a rod as it moves longitudinally with respect to the cylinder. The inside diameter of the ring-shape rod seal is the same as the nominal outside diameter of the rod. The rod seal installation tool of the invention includes three mutually parallel pins, pivotally mounted with respect to each other and designed to fit down over the ring-shape rod seal to have two outside pins situated inside of the rod seal ring and a center pin situated outside of the rod seal ring. Means are provided to pivot the outside pins out around the center pin and then toward each other to fold the rod seal in a generally C-shape configuration whereby the rod seal and tool can be inserted into the cylinder to align the rod seal with the cylinder rod seal groove. The pins are released to allow the seal to expand toward its nominal ring shape with at least part of the seal in the groove.Type: GrantFiled: June 10, 1977Date of Patent: May 30, 1978Inventor: Edwin S. Dygert
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Patent number: 4054986Abstract: Method and apparatus employing induction heating for positively mounting a grip ring on a thermoplastic support shaft of a counter wheel subassembly for retaining a bank of counter wheels on the support shaft with a preselected axial end play.Type: GrantFiled: August 23, 1976Date of Patent: October 25, 1977Assignee: Veeder Industries, Inc.Inventors: George Marres, Loreto B. D'Alesandris
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Patent number: 4043452Abstract: A miniature electrical connector comprising an insulative body having spaced, parallel connector pins extending therethrough and held in place by a combination of abutment surfaces on the pins and block, and C-rings on the pins. In assembling the connector, the C-rings are formed as part of a metal stamping, and are urged as a unit onto corresponding ones of the pins extending through the body. The C-rings are released from the stamping by bending the latter along suitably formed fracture lines.Type: GrantFiled: September 23, 1976Date of Patent: August 23, 1977Inventor: Milton I. Ross
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Patent number: 4004338Abstract: Two snap ring tools respectively for installing or removing internal of external snap rings, of the type having holes provided at opposite ends thereof for reception of tool points, are disclosed. Each tool includes first and second elongate arms having pivotally interconnected first ends and point-carrying second ends. A lever support member is adjustably slidably mounted on the first arm and a lever is pivotally connected thereto and operatively engaged with the second arm so as to effect pivotal movement of the latter upon pivotal movement of the lever. The lever may be moved to an overcenter position for holding a snap ring in a deflected state without the application of an external force to the lever.Type: GrantFiled: November 4, 1975Date of Patent: January 25, 1977Assignee: Deere & CompanyInventor: Francis John Breitbach