Patents Examined by Debra Meislin
  • Patent number: 4774861
    Abstract: A drill pipe spinner having a body with an open throat for receiving a drill pipe. A pair of cylindrical driven rollers are mounted on the body for rotation about a vertical axis. A pair of pressure arms are pivotally mounted on the body for rotation about a primary pivot pin. A pair of secondary pressure arms are mounted on the primary pressure arms, for rotation relative to the primary pressure arm about a secondary pivot pin. A pair of cylindrical pressure rollers are mounted on the secondary pressure arms, for holding the drill pipe against the driven roller. A pair of piston and cylinder assemblies exert force on the secondary pressure arms, to cause the secondary pressure arms to rotate. The moment arms between the piston and cylinder assemblies and the primary pivot pins are shorter than the moment arms between the piston and cylinder assemblies and the secondary pivot pins.
    Type: Grant
    Filed: November 5, 1987
    Date of Patent: October 4, 1988
    Assignee: Hughes Tool Company
    Inventors: William R. Hamilton, Harry D. Hebard
  • Patent number: 4774863
    Abstract: A pneumatically operated and controlled fastener feeder and driver apparatus supplies individual fasteners, such as screws having a head and a threaded shank portion, which are maintained on a carrier strip in a magazine assembly, to a nose assembly of the fastener feeder and driver apparatus. When a fastener is positioned in the nose assembly, a driver member of a power fastener driving tool engages the fastener and positions the fastener such that the fastener extends out from a workpiece engaging surface of the nose assembly. When the fastener is driven into the workpiece to a specified depth, a pneumatically operated and controlled driver mechanism moves the fastener driving tool away from the workpiece.
    Type: Grant
    Filed: October 10, 1986
    Date of Patent: October 4, 1988
    Assignee: Duo-Fast Corporation
    Inventor: Bernard W. Geist
  • Patent number: 4773285
    Abstract: The present invention relates to a decapping machine adapted to receive capped bottles and operable to decap bottles so received. The machine comprises a decapping station wherein individual capped bottles are securely positionable in bottle decapping relation with an assembly comprising a lever arm rotatable about a pivot. An anvil is secured to the lever arm in spaced apart relation from the pivot.
    Type: Grant
    Filed: October 29, 1985
    Date of Patent: September 27, 1988
    Assignee: Labatt Brewing Company Limited
    Inventor: Raymond J. Dionne
  • Patent number: 4771661
    Abstract: A vibratory pipe wrench includes a hollow handle provided with a fit-on movable jaw and a vibrator, the vibrator being electrically connected to an alternating voltage generator and having a gripping jaw adapted to interact with a pipe being handled, in conjunction with the fit-on movable jaw, the vibrator being movable along the longitudinal axis of the handle, the handle having an additional gripping jaw adapted to interact with the pipe when the vibrator is moved deeper into the hollow interior of the handle, the wrench further including a feedback circuit which electrically interconnects the vibrator and the generator.
    Type: Grant
    Filed: March 6, 1987
    Date of Patent: September 20, 1988
    Assignee: Kievsky Politenkhnichesky Institut
    Inventors: Georgy T. Levchenko, Alexandr N. Radzikovsky
  • Patent number: 4770069
    Abstract: A hand-held cap opener fitting the palm of the hand is employed in removing a cap from the child resistant container. The container terminates in a cylindrical neck having threads thereon and a first indicia at a circumferential position providing unlocking of the cap with the cap rotated to a corresponding angular position. The cap includes a radially outward second indicia projection. With the cap radial projection and the first indicia in circumferential alignment, the cap may be pried off the threaded end of the container neck. The cap opener is preferably of molded plastic and unitary form including a palm-held flat plate having top and bottom surfaces. A ring integral with the plate projects from the bottom surface with the ring sized slightly larger than the diameter of the cap which is received therein. An opening in the ring at the longitudinal center line of the flat plate receives the second indicia projection on the cap.
    Type: Grant
    Filed: July 8, 1986
    Date of Patent: September 13, 1988
    Assignee: Precise Metals & Plastics, Inc.
    Inventors: Carl Mikan, Louis W. Matthey
  • Patent number: 4768406
    Abstract: An apparatus, such as a screw driver, has a working member and a handle attached to the working member. The handle is of a predetermined cross-sectional shape when the tool is at rest. When incremental torque is applied to the handle is changes from the predetermined cross-sectional shape to another cross-sectional shape. As a result, the tool can have a cross-sectional shape, such as round, for low torque uses and a more suitable cross-sectional shape, such as oblong or triangular, for high torque uses. The handle returns to its predetermined shape when the high torque is released.
    Type: Grant
    Filed: April 22, 1986
    Date of Patent: September 6, 1988
    Inventor: Edwin Fitzwater
  • Patent number: 4766875
    Abstract: An endless wire saw in which a workpiece is placed in pressure engagement with the wire and a cutting material carried by the wire slices through the workpiece. The cutting material may be a slurry such as a glycerin fluid carrying silicon carbide particles.
    Type: Grant
    Filed: November 13, 1984
    Date of Patent: August 30, 1988
    Assignee: Stanford University
    Inventor: Robert S. Feigelson
  • Patent number: 4766783
    Abstract: A device is provided for increasing the distance between the power head and bit of a power screwdriver, particularly one intended for driving drywall screws. The device includes a polygonal drive rod which replaces the original drive rod in the tool's clutch mechanism, a cylindrical sleeve which is press fit over the new drive rod and receives the original drive rod at the other end thereof, and a cylindrical adaptor which receives the sleeve internally and connects the clutch mechanism to the depth gauge of the tool, the bit still projecting from the depth gauge. Any number of the extension sets can be interconnected together to increase the extension length as desired. With the extension in use drywall screws can be driven in areas previously not accessible due to interference with the power head, and the operator can drive screws in ceilings while standing on the floor rather than on scaffolding.
    Type: Grant
    Filed: July 22, 1986
    Date of Patent: August 30, 1988
    Inventors: Louis Stanich, Henry D. Sweeny
  • Patent number: 4766702
    Abstract: A method and apparatus for surfacing the opposed faces of brake disks achieves a surface pattern which promotes proper wearing-in of the disk and brake shoes or pads. The abrasive surface of a rotating abrading wheel applied to a brake disk rotating in the same angular direction as that of the abrading wheel. A rotating cup-shaped abrading wheel is tilted slightly with respect to the brake surface so that only one portion of the wheel engages the disk at a time resulting in a resurface pattern of lines that essentially do not cross over each other.
    Type: Grant
    Filed: December 18, 1986
    Date of Patent: August 30, 1988
    Inventor: James Kinner
  • Patent number: 4765208
    Abstract: The invention provides apparatus facilitating a quick and trouble-free opening of beer and other beverage cans characterized by a portion of the body thereof being peripherally bounded, at least in part, by a line wherein the can is structurally weakened and having attached thereto a tab-like operating member for breaking it free to produce an opening in the can of which it forms a part. Embodiments comprise a device which includes a portion for mount thereof to a finger or thumb of a hand and another portion providing means to insert under and provide a wedge in backing relation to the tab-like operating member including a base for rocking thereof on the body of the can to which it is applied to bias and carry therewith the tab-like member, to provide for its required function. Preferred embodiments of the invention are formed from a single strip of material and preferably of stainless steel.
    Type: Grant
    Filed: September 24, 1982
    Date of Patent: August 23, 1988
    Inventor: Richard C. Sakosky
  • Patent number: 4765387
    Abstract: Safety apparatus for tire inflation operations on a tire changing machine having a tire inflation system. The machine has a support table for receiving a tire/rim assembly, and has a tower at one side of the machine which supports a tire mount-demount head on a vertical adjust arm in position over the support table. A foot is provided for mounting on the mount-demount head, in one embodiment, so that the foot may be placed above a tire/rim assembly being inflated to absorb explosive forces if the tire explodes from the rim due to over inflation or a faulty tire bead. In another embodiment the mount-demount head has an impact absorbing member adjustable in vertical position on the vertical adjust arm. The impact absorbing member extends therefrom to overlie a tire/rim assembly for the aforementioned purpose.
    Type: Grant
    Filed: February 2, 1987
    Date of Patent: August 23, 1988
    Assignee: FMC Corporation
    Inventor: Bryce L. Mannen
  • Patent number: 4765211
    Abstract: A wrench opening (14,14') is disclosed as having particular utility for use with a socket (10) or closed end wrench (34) and includes inwardly convex engagement surfaces (16) defining a closed shape and having continuously curved end portions (16a, 16b) that provide greater surface-to-surface engagement with a nut or bolt head to be torqued than is possible with conventional flat engagement surface portions. The curvature of the engagement surfaces 16 is selected to provide maximum surface-to-surface engagement when normal tolerance deviations are involved. Connecting surfaces (20 or 22) extending between the engagement surfaces (16) are constructed to provide improved stress distribution and reduced tooling cost.
    Type: Grant
    Filed: June 16, 1986
    Date of Patent: August 23, 1988
    Inventor: David S. Colvin
  • Patent number: 4765207
    Abstract: A screw cap removing and tightening device comprises: an elongate plate member formed to provide a front gripping member at its front end, a plurality of longitudinally equal spaced teeth members in the intermediate portion, a cylindrical channel member at its rear end, and a slightly slopped downward member connecting the intermediate portion and the rear end; surrounding means which substantially surrounds the intermediate portion of the elongate plate member and is slidably movable along the elongate plate member; locking means movably secured to the surrounding means for preventing a rearward movement of the surrounding means; a rear gripping member supported and confined by the surrounding means; and rotating and twisting means contained by the cylindrical channel member and engaged with the surrounding means.
    Type: Grant
    Filed: May 26, 1987
    Date of Patent: August 23, 1988
    Inventor: Wen C. Yu
  • Patent number: 4765206
    Abstract: A cork extractor for a cork in a bottle has a frame adapted to engage the bottle end around the axis of the cork and has a rod slidable and rotatable in the frame in line with the cork. A lever pivoted on the frame has a yielding pawl adapted individually to engage and successively to ride over each one of a series of stops on the rod, in this way incrementally extracting the cork with each actuation of the lever.
    Type: Grant
    Filed: June 4, 1987
    Date of Patent: August 23, 1988
    Inventor: Paul W. Poehlmann
  • Patent number: 4763710
    Abstract: A rim assembly and a spindle assembly including locking ramps for releasably coupling them for concurrent rotation. The rim assembly has an exterior peripheral flange, an interior axial opening, a plurality of locking ramps extending radially inwardly into the opening with locking ramps having inclined surfaces on one face thereof. The spindle assembly has a taper body with an exterior face to be received within the opening of the rim assembly, a locking rotor coupled to the taper body, locking ramps extending radially outwardly therefrom with inclined surfaces on one face thereof couplable with the inclined surfaces of the rim assembly upon the rotation of said locking rotor. Locking pins are also included to lock the locking rotor in a first orientation with respect to the taper body when the inclined surfaces of the assemblies are out of contact. Also disclosed are the assemblies, per se.
    Type: Grant
    Filed: January 14, 1987
    Date of Patent: August 16, 1988
    Assignee: The Uniroyal Goodrich Tire Company
    Inventor: Martin Pielach
  • Patent number: 4762033
    Abstract: A ratchet wrench including a handle-carried drive ring and driven core in which the core can be simply and readily removed, intact, for cleaning, repair and replacement without the use of tools. Additionally, the wrench includes a low-friction ratchet drive-reversing mechanism for simple, one-finger operation. The disassembly-facilitating structure includes a resilient ring-like band seated in a channel defined by radially communicating annular grooves in the drive ring and in the wrench core. A band displacing element serves to shift the band to effect a bridging of the band across the grooves defining the channel to effect a mechanical intercoupling between the core and the drive ring of the ratchet wrench.
    Type: Grant
    Filed: February 24, 1987
    Date of Patent: August 9, 1988
    Assignee: National Hand Tool Corporation
    Inventor: Kirk K. Chow
  • Patent number: 4760871
    Abstract: A lower bead breaker quick release for a tire changing machine includes a manually overpowered spring lock mechanism that keeps the lower bead breaker in position during lower and upper bead breaking operations. Manual compression of the spring lock allows the lower bead breaker pivot shaft to be positioned axially to allow complete removal of the lower bead breaker from the tire changing machine. A manually actuated, friction locked lower bead breaker attitude adjustment is also provided.
    Type: Grant
    Filed: September 8, 1986
    Date of Patent: August 2, 1988
    Assignee: FMC Corporation
    Inventor: Tumkur R. Vijay
  • Patent number: 4759240
    Abstract: An electromotive screwdriver comprising a head assembly, a barrel, and a fixing assembly. The head assembly comprises a first inclined plane which is integrally formed with the housing of the head assembly and which is provided with a hollow ball, a channel and a ridge-like runner. The barrel comprises a second inclined plane which is integrally formed with the housing of the barrel and which is provided with a spherical recess, a serrated channel, and a box-shaped runner. The two planes can be engaged by adapting the ball into the spherical recess as well as inserting each runner into corresponding channel. The fixing assembly is disposed on the barrel which has a spring member that will urge the lug body into the first or second rectangular recesses provided on the first inclined plane of the head assembly through a rectangular opening on the second inclined plane.
    Type: Grant
    Filed: April 28, 1987
    Date of Patent: July 26, 1988
    Inventor: Samson Lin
  • Patent number: 4759395
    Abstract: The bead breaker for vehicle tires involves a hydraulic jack member whose base is attached to a bead pressing member and whose extendable head is connected by tension members, such as a chain and hook combination, to the wheel. The bead pressing member may have alternative configurations, one being an adjustable split presser assembly comprising a presser arm, attached to the jack base, upon whose opposing extended arms are slidingly mounted adjustable sleeves. Attached to each radially adjustable sleeve is an arcuate presser section which presses downward against the tire bead when the jack head is extended, breaking the bead. In the alternative bead pressing member, the presser arm, attached to the jack base, is removably attached to a ring presser member, which presses against the tire bead along a full 360-degree circumference.
    Type: Grant
    Filed: May 27, 1987
    Date of Patent: July 26, 1988
    Inventor: Kazuichi Tsukamoto
  • Patent number: 4759239
    Abstract: A wrench assembly for making and breaking connections between tubular members, such as a drill string and a top drive sub. The wrench assembly consists of a lower wrench and an upper wrench. The lower wrench has a curved gate arm and a curved latch arm, pivotable between an open position and a closed position. The gate arm has a plurality of teeth on its outer surface, and the latch arm has a plurality of teeth on its inner surface, for locking engagement with the teeth on the gate arm. The lower wrench also has a clamping cylinder and a die block for forcing the tubular member against the gate arm. The upper wrench, mounted above the lower wrench, has a semicircular plate. A plurality of splines are mounted on the interior surface of the semicircular plate for engagement with splines on the top drive sub. A fluid cylinder is provided for applying torque to the wrenches to rotate one of the wrenches with respect to the other wrenches.
    Type: Grant
    Filed: March 3, 1987
    Date of Patent: July 26, 1988
    Assignee: Hughes Tool Company
    Inventors: William R. Hamilton, Karl A. Schulz