Pivotal Arms Patents (Class 29/261)
  • Patent number: 5224254
    Abstract: A puller for removing an object from a shaft including first and second collars movable relative to one another along an axis, at least two circumferentially spaced clamping jaws pivotally supported at one end to the first collar and having means at the other end for grasping the object, at least two circumferentially spaced links, each of the links being pivotally supported at one end to the second collar and pivotally supported at the other end to an associated clamping jaw, and a drive structure for moving the collars together along the axis away from the shaft. A threaded rod is fixed to the second collar, and a nut receives the threaded rod and is secured against axial movement toward the shaft relative to the first collar. The nut may be turned to move the threaded rod and second collar axially relative to the first collar.
    Type: Grant
    Filed: June 17, 1992
    Date of Patent: July 6, 1993
    Assignee: Power Team Division of SPX Corporation
    Inventors: Thomas J. McPeak, James C. Solie, John R. Loquai
  • Patent number: 5211211
    Abstract: An improved tool for pulling off a rotor of a motor from a shaft or a fan from a shaft, which improved tool is provided with hooked arms that are releasably but securely held at one end in the housing, without the use of retaining clips, so that the arms do not fall off during use or become lost, and so that they do not interfere with the use of the tool when using the securing bolts for pulling off a rotor. The hooked arms of the invention are also hexagonal shaped, and securing bolts are provided with hexagonal-shaped recesses in their heads, so that the hooked arms may themselves be used for rotating the securing bolts when pulling off a rotor of a motor from a shaft.
    Type: Grant
    Filed: June 18, 1992
    Date of Patent: May 18, 1993
    Assignee: Michael Rubino
    Inventors: Michael Rubino, Michael Berg
  • Patent number: 5177848
    Abstract: A hand tool includes a handle section having two L-shaped legs with a pulling leg attached to each handle leg. The handle legs are pivotally attached to each other by a pivot bolt and a pusher element is attached to that pivot bolt. As the handles are squeezed together, the pulling legs are moved in one direction and the pusher element is moved in an opposite direction. Thus, a moving the handles toward or away from each other generates simultaneous pushing and pulling forces. The pulling legs can be releasably or permanently attached to the handle, and an extension element can be releasably attached to the pushing element.
    Type: Grant
    Filed: December 5, 1991
    Date of Patent: January 12, 1993
    Inventor: L. E. Halstead
  • Patent number: 5174005
    Abstract: The invention comprises of improvements in a locking puller device. The locking puller device has three pivotally mounted jaws and a cam ring which moves forward to pivot and lock the jaws about an object. The improvements comprise a flange-less, disk-like collar having axial slots therein to pivotally mount the jaws, a threaded sleeve which is threaded into a receiving member of the collar, and a T-handle which replaces the nut and which can be adjusted without a tool. These improvements vastly improve the strength and durability of the locking puller device and also are more user friendly. If the threads on the sleeve are damaged through use, the sleeve can be turned out of the collar and replaced with a new sleeve of various lengths, instead of having to also replace the collar which was fixed to the sleeve in the old locking puller devices.
    Type: Grant
    Filed: June 8, 1992
    Date of Patent: December 29, 1992
    Inventor: Dean S. Somerville
  • Patent number: 5167057
    Abstract: A puller is vertically movably mounted on a transport cart and includes a base assembly having at least a pair of puller jaws pivotally mounted thereto. The puller jaws are pivotally moved relative to the base assembly by means of a cam ring which is axially moved with respect to the base assembly by means of a plurality of hydraulic cylinders connected thereto. A hydraulic ram is mounted in the base assembly and has a ram point adapted to engage the end of the shaft upon which the gear is mounted.
    Type: Grant
    Filed: April 20, 1992
    Date of Patent: December 1, 1992
    Inventor: Dean S. Somerville
  • Patent number: 5167058
    Abstract: A substantially continuous tube-pulling operation is performed through the use of a plurality of pulling deivces, each of which is designed to partially pull a tube from its associated holder. By operating the pulling devices in a consecutive and repetitive fashion, the tube can be completely stripped from the holder in a single continuous operation.
    Type: Grant
    Filed: January 18, 1991
    Date of Patent: December 1, 1992
    Assignee: Armstrong & Sons, Inc.
    Inventor: Robert S. Armstrong, Jr.
  • Patent number: 5165156
    Abstract: A tool for installing and removing a clutch drum piston assembly from a planetary gear assembly and for installing and removing the planetary gear assembly within an automobile automatic transmission includes a sliding hammer arrangement and an adjustable spindle adapted to be used with clutch drum assemblies of various diameter central apertures. The adjustable spindle is formed form a plurality of elongated arcuate members radially disposed about a cylindrical member intermediate the ends of the arcuate members defining a fulcrum. An adjustment collar having a tapered interior surface is disposed about one end of the elongated arcuate members. As the adjustment collar is moved axially toward the other end of the assembly, the tapered inner surface causes the arcuate members to pivot radially outwardly about the fulcrum. A shaft is connected to the disk and extends outwardly from the collar. The outwardly extending portion of the shaft serves as a guide for a sliding hammer.
    Type: Grant
    Filed: May 29, 1990
    Date of Patent: November 24, 1992
    Inventor: William E. Shultz
  • Patent number: 5163211
    Abstract: An improved tool for pulling off a rotor of a motor from a shaft or a fan from a shaft, which improved tool is provided with hooked arms that are releasably but securely held at one end in the housing, without the use of retaining clips, so that the arms do not fall off during use or become lost, and so that they do not interfere with the use of the tool when using the securing bolts for pulling off a rotor. The hooked arms of the invention are also hexagonal shaped, and securing bolts are provided with hexagonal-shaped recesses in their heads, so that the hooked arms may themselves be used for rotating the securing bolts when pulling off a rotor of a motor from a shaft. To ensure that the each hooked arm is releasably retained in a respective hole of the housing, the end of the arm is provided with a hook defined by a straight piece extending at an acute angle with respect with the main, elongated body of the arm.
    Type: Grant
    Filed: July 29, 1991
    Date of Patent: November 17, 1992
    Assignee: Michael Rubino
    Inventors: Michael Rubino, Michael J. Berg
  • Patent number: 5159743
    Abstract: The hydraulically powered locking puller device comprises a base assembly about a central axis, a camming assembly circumferentially about the base assembly, and an hydraulic module axially centered within the base assembly. The base assembly has a cylindrical housing wall united to an anchor ring carrying at least two claw members and having an internally threaded cylindrical surface. The camming assembly includes a mooring ring mounted on the housing wall of the base assembly for axial movement therealong and a cam ring axially spaced from a coupler on the mooring ring. The cam ring is in camming relationship to the claw members.
    Type: Grant
    Filed: May 8, 1989
    Date of Patent: November 3, 1992
    Assignee: Posi Lock Puller, Inc.
    Inventor: Dean S. Somerville
  • Patent number: 4984344
    Abstract: The extension shaft removal tool consists of one base tool with two combination lifter plates and is specifically designed to separate the automatic washer drive motor shaft from the extension shaft of the clutch assembly.
    Type: Grant
    Filed: October 26, 1989
    Date of Patent: January 15, 1991
    Assignee: Ralph Bidwell
    Inventor: Richard C. Wells
  • Patent number: 4977661
    Abstract: An apparatus for removing carrier bearings, axle bearings, or other types of bearings from a support shaft is disclosed. The apparatus includes a pair of housing sections pivotedly mounted as a controllably positioned platform. The platform defines an aperture therein, through which passes a drive shaft. Each housing section defines a lip on its free end adapted to engage the race of a bearing to be removed. Upon the imposition of a force on a bearing's support shaft by the drive shaft, the housing section lips apply a force against the bearing, eventually disengaging it from its mounting on the axle.
    Type: Grant
    Filed: August 7, 1989
    Date of Patent: December 18, 1990
    Inventor: Thomas H. Wood
  • Patent number: 4941252
    Abstract: A hand-held tool capable of removing an anchor bolt, such as a molly bolt, from attachment to a wall. The tool of the present invention includes a pair of jaw members which move into gripping relationship onto the exposed end flange of an anchor bolt, following which a lead screw on the tool engages the attachment screw of the anchor bolt and forces the attachment screw inwardly of the wall. This action causes the legs of the anchor bolt to bend and to be straightened and to become sufficiently narrow in transverse dimension so that the anchor bolt can be manually pulled out of the wall through the hole provided therefor. In this way, the tool permits a quick and easy removal of an anchor bolt from a wall without having to damage the wall in any way.
    Type: Grant
    Filed: September 1, 1988
    Date of Patent: July 17, 1990
    Inventors: Bernhard M. Haisch, Marilyn E. Bruner
  • Patent number: 4929111
    Abstract: The tool for permitting a wrench to turn a harmonic balancer and crank shaft connected to the same. The tool employs a base which may be fixed to the harmonic balancer. The base includes an opening bored through the base to form a cavity. The cavity includes wall portions having a faceted surface and a threaded surface spaced from one another. The threaded member engages the threaded surface of the cavity and extends through the opening into engagement with the crank shaft.
    Type: Grant
    Filed: March 2, 1987
    Date of Patent: May 29, 1990
    Inventor: Giuseppe Lauritano
  • Patent number: 4916791
    Abstract: The invention comprises two or more links for connecting a ball bearing puller where the outer surfaces of both races of the assembly are both engaged with mating surfaces of an associated machine. The links are arranged so that one end of each link engages and grips the internal groove of the outer race of the assembly. The other end of each link is engaged with a ring which may be pulled by means of a standard ball bearing puller to remove the assembly from the machine.
    Type: Grant
    Filed: July 26, 1989
    Date of Patent: April 17, 1990
    Inventors: Mary A. Clouse, David E. Voorhis
  • Patent number: 4868986
    Abstract: The chip cracking device is for engaging the lateral surfaces of a mounted computer chip. The device body has a pair of curved leg members having upper and lower portions with inwardly extending centrally disposed structures. A pivot member is operative on the inwardly disposed structures and an adjustable and hand operable knob is operative on the upper portions of the leg members. The chip cracking device further has opposing jaw members with lateral cutting edges of a predetermined slope so that the adjustable movement of the knob causes the cutting edges to crack and separate the chip body for subsequent removal from its mounting structure.
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: September 26, 1989
    Inventors: Steven N. Olson, Rodney J. Olson, Eugene H. Olson
  • Patent number: 4852234
    Abstract: A puller assembly (10,42) comprising at least two angled brackets (12) each pivotally secured at a first end (14) to a base (18), each of the angled brackets (12) having a second end (16) remote from the first end (14) and disposed oppositely with respect to the base (18), a screw means (24) threadedly engaged with the second ends (16) and disposed so as to allow adjustment of the distance between the second ends (16), a drive bolt (20) threadedly engaged in the base (18) centrally of the angled brackets (12) and a leg (32) pivotally fixed to a respective one of the angled brackets (12) and disposed to attach to an object to be pulled.
    Type: Grant
    Filed: October 7, 1987
    Date of Patent: August 1, 1989
    Assignee: Haben Corporation Ltd.
    Inventor: Daryl Wheeler
  • Patent number: 4845825
    Abstract: Apparatus for repairing broken stringers of wooden pallets and a method involving the use of the apparatus is disclosed. The apparatus comprises a pair of interconnected jaws having pads mounted on one end with magnets to secure studded repair plates to the pads. A broken stringer is inserted between the pads and the jaws are swung together to imbed the studs in the wood with the plate extending across the break effecting the repair. The pads are provided with limiting pivoting movement to insure proper alignment of the plates with respect to the stringer sides irrespective of the angle of the jaws when the studs contact the wood. A jack is used to adjust the vertical positions of the jaws for convenient use of the apparatus.
    Type: Grant
    Filed: May 16, 1988
    Date of Patent: July 11, 1989
    Inventor: Terry L. Gleason
  • Patent number: 4823453
    Abstract: A tool for pulling faucet handles and flow control cartridges from a faucet housing. A pair of spaced apart jaws are pivotally coupled with a block. A bolt extends centrally through the block and a chuck on the end of the bolt is used for coupling either a shaft or a claw. When pulling a handle the shaft is coupled with the bolt and the jaws are coupled with the handle. Extension of the bolt exerts an upward force which results in removal of the handle. The claw may then be inserted into the chuck and coupled with the cartridge. Retraction of the bolt then exerts an upward force which causes removal of the cartridge.
    Type: Grant
    Filed: October 2, 1987
    Date of Patent: April 25, 1989
    Inventor: Joseph E. Bartlett
  • Patent number: 4786214
    Abstract: A tool for removing a cap from a pipe. A torque screw is threadedly mounted to a frame having a pair of downwardly extending legs to which is attached a ring slippable over and against a sewer pipe. A pair of fingers are pivotally and rotatably mounted to an end of the screw and are positionable between the end cap and the end of the sewer pipe. Rotation of the screw forces the fingers and cap apart and away from the ring and pipe.
    Type: Grant
    Filed: May 7, 1987
    Date of Patent: November 22, 1988
    Assignee: Hart Industries, Inc.
    Inventors: E. Michael Schmidt, P. Michael Price
  • Patent number: 4761869
    Abstract: A bar-type puller having a cross block with a central section and a pair of end sections with a forcing screw threadably mounted in the central section. A pair of work-engaging members, such as pulling jaws, can be radially and axially adjustably mounted on the cross block by end sections of the cross block having spaced-apart arms to define spaces therebetween which receive the work-engaging members for infinite lateral adjustment along the arms. The work-engaging members have spaced-apart pins which span the top and bottom of the arms, with a slight clearance to facilitate lateral adjustment. The pins are caused to move into binding relation with the cross block when the work-engaging members are under load to lock the members in radially adjusted position. There is also provision for axial adjustment by providing additional spaced pins on the work-engaging members providing an alternate mounting location for the members to the cross block.
    Type: Grant
    Filed: June 22, 1987
    Date of Patent: August 9, 1988
    Assignee: Owatonna Tool Company
    Inventors: Gerald E. Barry, James L. Sandberg
  • Patent number: 4744132
    Abstract: 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: Grant
    Filed: November 10, 1986
    Date of Patent: May 17, 1988
    Assignee: Unit Rig & Equipment Company
    Inventors: George O. Greene, Jimmy G. Foster, Jim Hein
  • Patent number: 4724594
    Abstract: An apparatus for adjusting the level of nuclear fuel rods in a fuel assembly is disclosed, and which comprises a tool composed of an expander having a pair of parallel, laterally spaced apart and flexible arms which have first ends which are interconnected to each other, and opposite free ends. The tool further includes an actuator disposed between the free ends of the arms, and the free ends of the arms and the actuator mount cooperating wedge surface means, whereby relative longitudinal movement between the expander and actuator causes the arms to separate a predetermined maximum distance. In use, the tool is inserted into the fuel assembly with the free ends of the arms located between the end of a misaligned fuel rod and the nozzle, and the actuator is then longitudinally advanced to separate the arms to the predetermined maximum distance, which serves to move the misaligned rod to its proper level.
    Type: Grant
    Filed: March 26, 1986
    Date of Patent: February 16, 1988
    Assignee: Westinghouse Electric Corp.
    Inventors: David L. Hale, Thomas F. Culbreth
  • Patent number: 4691424
    Abstract: A tool for removing a cap from a pipe. A torque screw is threadedly mounted to a frame having a pair of downwardly extending legs to which is attached a ring slippable over and against a sewer pipe. A pair of fingers are pivotally and rotatably mounted to an end of the screw and are positionable between the end cap and the end of the sewer pipe. Rotation of the screw forces the fingers and cap apart and away from the ring and pipe.
    Type: Grant
    Filed: January 16, 1986
    Date of Patent: September 8, 1987
    Assignee: Harte Industries, Inc.
    Inventors: E. Michael Schmidt, P. Michael Price
  • Patent number: 4682395
    Abstract: A device to push a wheel flange hub or splined hub of motor vehicles out of a shaft bearing press-fitted in a bearing cylinder is of simple design and easy to handle and, in addition, adjustable to different diameters of various bearing cylinders. The device includes two each semi-cylindrical spreader sectors supported on the one hand by axial pins in eccentric axial holes in a supporting member resembling an internally threaded ring so they can swivel while having at their opposite ends projections which project radially outward and can be inserted in form closing fashion into an annular groove of the bearing cylinder. A threaded spindle equipped with a wrench engagement head and a spreading cone is adjustably screwed into a central, tapped hole of the supporting member by means of which threaded spindle the spreader sectors can be spread apart. Seated in a central, tapped hole of the threaded spindle is a pressure screw with a pressure transmitting part and a wrench head.
    Type: Grant
    Filed: August 1, 1986
    Date of Patent: July 28, 1987
    Inventor: Horst Klann
  • Patent number: 4649615
    Abstract: A combination tool for pulling gears, battery terminals, pilot bearings, wheel hubs, tie rods, steering wheel, harmonic balances and Pitman arms and for flaring pipes. The tool includes a yoke having four arms, each of which has an open-ended slot and a pin hole at the end of each arm. An arm pin in each arm provides a jaw member stop surface for large griping diameter pulling applications, and alternatively attaches the jaw member directly to the yoke arm for small gripping diameter applications. For other applications, a jaw member having an overhanging head is inserted into one or more yoke arm slots.
    Type: Grant
    Filed: June 11, 1984
    Date of Patent: March 17, 1987
    Inventor: Kenn W. Hundley
  • Patent number: 4648166
    Abstract: A claw extractor for pulling a part from a shaft. The extractor comprises a plurality of claws for gripping the part and a drive element for engaging the shaft. Provided on the rear end of the tool is a guide provided with arcuate grooves extending from the inside to the outside. Slide stubs, cooperatively connected to the claws, are received within the grooves to thereby move the claws.
    Type: Grant
    Filed: March 15, 1985
    Date of Patent: March 10, 1987
    Inventor: Paul L. J. Tilman
  • Patent number: 4583288
    Abstract: An end effector for an industrial manipulator acquires, loads and inserts a dual in-line package device into a printed circuit board, DIP socket or the like. The end effector includes a gripper body which defines a chamber portion therein and a pair of multi-fingered gripper means operably associated with the body portion for reciprocal movement between a first, fully extended device acquisition position and a second, fully retracted position within the body portion chamber. The body portion also includes retaining means for removably retaining a DIP device in said chamber after the disengagement of the gripper means.Pneumatic cylinders are provided to effect the aforementioned reciprocal movement and to urge the DIP device from the retaining means and insert the device into a circuit board or the like. The retaining means both hold the DIP device during the loaded state and align the DIP connector pins for insertion into the circuit board or the like.
    Type: Grant
    Filed: June 28, 1985
    Date of Patent: April 22, 1986
    Assignee: Westinghouse Electric Corp.
    Inventor: Steven J. Young
  • Patent number: 4463489
    Abstract: This disclosure relates to a universal joint puller for disassembling a universal joint including its cross, bearing cups and bearings from drive shaft and/or transmission shaft yokes, the puller including a pair of members at least one of which is mounted for sliding movement relative to a pair of rods, the rods having threaded terminal ends for mounting the puller to threaded bores of associated yokes, a screw for forcing the members away from each other during a disassembly operation, a pair of flexible cables adapted to be entrained about the arms of the universal joint cross, and the ends of each of the cables being connected to the movable member such that upon the rotation of the screw in a direction to separate the members from each other, the force generated by the rotation of the screw is transferred to the cables and the arms of the cross to effect the removal of the bearing cup and its associated bearings, the threaded ends of the rod are preferably removably secured to remaining portions of the r
    Type: Grant
    Filed: January 28, 1983
    Date of Patent: August 7, 1984
    Inventor: William G. James
  • Patent number: 4398706
    Abstract: A light to moderate duty work-holding clamp which also can be used as a gear or wheel puller. The body of the clamp is formed of two C-shaped plates, aligned and spaced apart by 2 blocks, one attached to each end of the C-shape. A large clamping screw is threaded through each block. The blocks are mounted to the plates in a pivotable manner, so that the two clamping screws can be pivoted through 360 degrees freely. One end of each of these two clamping screws has a bearing face for bearing the pressure to be applied by the screws. These bearing faces can be snapped on and off the ends of the screws. The other end of each of these two screws terminates in a hook-shaped portion, which can provide the gear pulling function if used in combination with a third clamping screw. This third clamping screw is threaded through a third block which is attached slidably between the C-shaped plates. This block can slide to any point along the C-shape between the first two blocks, turning as it moves along.
    Type: Grant
    Filed: March 4, 1982
    Date of Patent: August 16, 1983
    Inventor: Herbert E. Kaulfuss
  • Patent number: 4354302
    Abstract: A fluid pressure operable jacking tool having oppositely disposed locking arms. With the draft key and coupler removed, the locking arms of the jacking tool, when installed, biasingly engage the coupler cross key slots formed in the draft gear yoke, so that a fluid pressure powered ram of the jacking tool abuts against the draft gear follower. A fluid pressure line is connected to the jacking tool and, when provided with fluid pressure, causes the jacking tool ram head to compress the draft gear to allow removal of the draft gear and jacking tool from the car center sill together. Once removed, pressure is released from the jacking tool to permit separation thereof from the draft gear. If the draft gear is to be installed, a reverse procedure would be employed.
    Type: Grant
    Filed: September 22, 1980
    Date of Patent: October 19, 1982
    Assignee: American Standard Inc.
    Inventors: Roger J. Weseloh, Russell G. Brandsma, John R. Hoshour
  • Patent number: 4274189
    Abstract: An apparatus is described for pulling the pilot bearing from a flywheel or the like comprising a support member having a pair of spaced-apart bolt members threadably mounted therein. The support member has a central opening formed therein between the bolt members which receives a pair of pivotally mounted first and second jaw members having bearing engaging portions at one end thereof. The jaw members are extended through the central opening in the pilot bearing and then locked into position by means of a smaller bolt extending through the jaw members to limit the pivotal movement thereof. Threadable rotation of the first and second bolt members causes the jaw members to pull the pilot bearing from the flywheel.
    Type: Grant
    Filed: May 19, 1980
    Date of Patent: June 23, 1981
    Inventor: Louis M. Conover
  • Patent number: 4180903
    Abstract: Apparatus for collapsing steam tubes for removal from a steam boiler includes a plurality of gripping arms for engaging the end of a steam tube in the wall of a steam boiler. The arms are mounted about a central axis for pivotal movement of the distal ends thereof toward and away from the steam tube. The tube is engaged by gripping fingers at the distal end of the arms for engaging the steam tube between the wall of the boiler and the flared end of the tube. The arms are pivoted inwardly toward the central axis by the camming action of a plate through which the arms extend. The plate bears against the arms and cams them toward the central axis. The plate is moved by an actuator mounted on a fluid driven piston within a cylinder.
    Type: Grant
    Filed: March 2, 1978
    Date of Patent: January 1, 1980
    Inventor: Joseph Hannigan, Jr.
  • Patent number: 4123838
    Abstract: A plumber's handle pulling tool for pulling valve handles from valve stems includes an outer stabilizing clamp providing a pair of substantially "C" shaped stabilizing arms affixed to an outer bar element, an inner handle pulling clamp providing a pair of substantially "C" shaped pulling arms affixed to an inner bar element, and a threaded rod rotatably affixed on one end thereof to the inner bar and threadably disposed through a threaded aperture located in the outer bar element.
    Type: Grant
    Filed: October 17, 1977
    Date of Patent: November 7, 1978
    Inventor: Carl A. Magavero
  • Patent number: 4117581
    Abstract: Three jaws are pivoted to a head carrying the pressure screw or bolt. One jaw is pivotally secured to one side of the head and the other two jaws are normally situated at 120.degree. one upon each side of the first jaw and are also pivotally secured to the head. Means are provided to move these two jaws to a position in spaced and parallel relationship opposite to said first jaw and also to swing the first jaw between these two jaws so that the puller can be used as an internal puller. This movement can be achieved either by unbolting the two jaws and re-positioning same or using a U-bolt attachment which permits the two jaws to be slid from one position to another thus enabling the puller to be used as a two or three-jaw puller and upon external or internal objects to be pulled.
    Type: Grant
    Filed: July 14, 1977
    Date of Patent: October 3, 1978
    Inventor: Michael Brodie
  • Patent number: 4091694
    Abstract: A tool for rapidly clamping a repair clamp tightly around a pipe. The tool has a two-stage operation, the first for rapidly taking up any slack, and the second for applying the necessary clamping force for tightening the clamp on the pipe.
    Type: Grant
    Filed: July 18, 1977
    Date of Patent: May 30, 1978
    Assignee: Rockwell International Corporation
    Inventor: Thomas D. Parrish
  • Patent number: 4084305
    Abstract: An improved construction of a pulley puller and in particular a pulley puller wherein two pull pawls and a base are provided with two flanges and two grooves respectively to provide stability at the point where they meet supportively, tractive members formed in one piece are disposed between the pull pawls and the base, a fixed ring is casted integrally with the base, the base also having a central hole having therein an internal thread, a hexagonal flange end is formed integrally at one end of the central hole and a supported screw rod is fitted through the central hole so that when operating the pulley puller it will remain stable and the pull pawls will not slip or otherwise slide out of the contact surface between the pull pawls and the base.
    Type: Grant
    Filed: December 23, 1976
    Date of Patent: April 18, 1978
    Inventor: Yun-Te Chang
  • Patent number: 4077103
    Abstract: A pulling tool for removing from a shaft either a rotor, such as a squirrel cage blower rotor, having an axially projecting hub, or a fan having radially projecting blades spaced about and joined at their inner ends to a hub. The tool has a screw for seating against one end of the shaft and a nut threaded on the screw including gripping means for engaging the hub of a rotor on the shaft or behind a fan on the shaft in such a way that the rotor or fan is pulled from the shaft by threading the screw against the shaft.
    Type: Grant
    Filed: September 27, 1976
    Date of Patent: March 7, 1978
    Inventor: Eugene M. Kelley
  • Patent number: 4068365
    Abstract: The invention comprises an improvement in a locking puller device. The locking puller has three pivotally mounted jaws and a cam ring which moves forward to pivot and lock the jaws about an object. The improvement comprises a projecting lug structure suspended only from the cam ring which projects beneath the under surfaces of the jaws to cam the jaws apart as the cam ring moves rearward with the projecting lug of the cam ring engaging the undersurfaces of the jaws. The under surfaces of the jaws follow a tapered path relative to the movement of the cam ring so as to cam the jaws apart.
    Type: Grant
    Filed: February 14, 1977
    Date of Patent: January 17, 1978
    Inventors: Paul W. Brandt, Dean S. Somerville
  • Patent number: 4021903
    Abstract: A lock cylinder assembly is removed from a steering column by means of a tool incorporating a collet member having a plurality of spring fingers which grip the end of the lock cylinder and a body member having a cylindrical flange which fits between the end of the collet and the supporting structure surrounding the lock to hold the fingers in engagement with the lock cylinder as a bolt is tightened to pull the collet into the body.
    Type: Grant
    Filed: November 6, 1975
    Date of Patent: May 10, 1977
    Inventor: Richard Walsh
  • Patent number: 4019233
    Abstract: A puller apparatus and method for disassembling a universal joint which has a cruciform spider and two yokes each of which has collars that carry bearing cups mounted upon the opposite arms of the spider. Integral flanges on the cups prevent them from being pulled through the collars. A puller bridge assembly has studs which extend loosely through holes in the cup flange and are screwed into threaded bores in a first collar of the first yoke; and side plates are mounted on the collars of the second yoke. Puller means has a cross head with puller arms that engage the side plates and a driver screw that bears on the bridge plate so that turning the screw separates the first yoke from the first cup. The bridge assembly and puller means are then repositioned and used to remove the second cup from the first yoke, after which the first yoke is removed.
    Type: Grant
    Filed: May 7, 1975
    Date of Patent: April 26, 1977
    Assignee: Owatonna Tool Company
    Inventor: James E. Jirele
  • Patent number: 4007535
    Abstract: The invention comprises a locking puller for pulling such objects as the inner race of a bearing, gear, or sprocket off of shafts. The puller has three jaws each pivotally mounted to a collar to enable the jaws to pivot radially toward one another to engage such objects to pull such objects off of a shaft. The apparatus has a cam ring with a triangular shape and rearwardly extending braces which are fixed to a rearward ring. The collar has a rearwardly threaded cylindrical portion with a nut threaded onto the cylindrical portion. The nut has an annular groove with the rearward ring rotatably mounted to a nut in the groove. The cam ring surrounds jaws at a location forward of the pivotal mounting of the jaw. The jaws are tapered.
    Type: Grant
    Filed: September 4, 1975
    Date of Patent: February 15, 1977
    Inventors: Paul W. Brandt, Dean S. Somerville
  • Patent number: 3990139
    Abstract: In one exemplar embodiment, a valve seat puller is disclosed utilizing a plurality of J-shaped hooks mounted for limited pivotal movement on a hook support block. The hook support block and J-shaped hooks are supported by a threaded rod extending through a central aperture in the support block and secured in place by a lock nut. The J-shaped ends of the hooks are spread to engage the lower rim of the valve seat. The threaded rod passes through an aperture in a pump support plate spaced above the hook support block and is secured to the pump support plate by a drive nut. By applying rotary motion to the rod or the drive nut, the rotary motion will be translated into vertical axial motion of the rod, thus applying a lifting force to the hooks and valve seat to free the seat.
    Type: Grant
    Filed: January 28, 1976
    Date of Patent: November 9, 1976
    Assignee: Daniel Lee Touchet
    Inventor: Daniel Lee Touchet
  • Patent number: 3986242
    Abstract: A propeller puller has a central body section with outward fins. Chains are connected to the fins and engage about blades on the propeller, and a push member within the central body section is forced against the mounting shaft of the propeller to extract the propeller from the shaft.
    Type: Grant
    Filed: July 23, 1975
    Date of Patent: October 19, 1976
    Inventor: Robert M. Kerr
  • Patent number: 3964149
    Abstract: This invention relates to devices for removing gears, bearings, sleeves, and the like, from a shaft or cylinder. The invention relates to an improved device for this purpose that combines a reversible gear and sleeve puller in one tool. The jaws of the device are fully adjustable and secured relative to the work piece.
    Type: Grant
    Filed: May 5, 1975
    Date of Patent: June 22, 1976
    Assignee: Ingersoll-Rand Company
    Inventor: Melvin D. Hugh