Having Driver Retaining Means Patents (Class 411/407)
  • Publication number: 20140150612
    Abstract: A tamper resistant fastener system includes a threaded fastener having a head provided with uniquely formed and arranged engagement teeth for engaging with complimentarily formed teeth on a socket style torque transmitting drive tool. Engagement of the respective sets of teeth on application of torque from the drive tool in one direction advances the fastener, but application of torque from the drive tool is not effective in an opposed direction to remove the fastener.
    Type: Application
    Filed: December 20, 2012
    Publication date: June 5, 2014
    Inventor: Best Bolt Products, Inc.
  • Publication number: 20140117059
    Abstract: An apparatus to allow a one-handed operation of mounting a vibration sensor to a mounting pad adhered to a machine. An attachment screw includes a recessed socket with a detent to releasably retain a ball-end hex driver such that the driver can remain coupled to the attachment screw without force being applied by the user. Also, a handheld device includes a driver having a handle portion and a driver shaft extending therefrom, the driver shaft having a driver portion at a distal end, and a vibration sensor support configured to support the vibration sensor such that the driver portion has access to an attachment screw threaded through the vibration sensor, and coupled to the driver such that the vibration sensor support is rotatable around a longitudinal axis of the driver shaft and slidable along a longitudinal portion of the driver shaft.
    Type: Application
    Filed: October 26, 2012
    Publication date: May 1, 2014
    Applicant: Azima Holdings, Inc.
    Inventors: Kenneth Ralph Piety, K. C. Dahl, Wylie Moreshead
  • Patent number: 8635751
    Abstract: A clamping system with a clamping nut and a wrench for tightening the clamping nut, wherein the clamping nut includes at least one recess on either the outside edge or the inside edge of the end face of the clamping nut to receive projections of the wrench. The edge opposite the edge with at least one recess is closed. The at least one recess is provided with at least one undercut, which the projections of the wrench can grip from underneath.
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: January 28, 2014
    Assignee: Zollmann GmbH
    Inventor: Martin Zollmann
  • Patent number: 8562266
    Abstract: A fastener assembly for parts of a plasma chamber. The fastener assembly includes a bolt with a tool engaging socket and a spring-loaded pin which fits in a through hole of the bolt. When installed, the spring-loaded pin substantially fills the space in the socket and thus prevents parasitic plasma from forming in spaces between opposed surfaces of the pin and bolt. When a tool such as a hex key is inserted into the socket, the spring-loaded pin retracts and the tool rotates the bolt to attach an upper part to a lower part by engaging threads of the bolt with a threaded hole in the lower part.
    Type: Grant
    Filed: February 11, 2011
    Date of Patent: October 22, 2013
    Assignee: Lam Research Corporation
    Inventor: Gregory Sexton
  • Patent number: 8540756
    Abstract: According to one embodiment, a fastener includes a shank defined about a central axis and a head coupled to the shank. The head includes a continuous receptacle circumscribing the central axis. The continuous receptacle includes a radially inner surface that is angled radially inwardly toward the central axis in a head-to-shank direction.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: September 24, 2013
    Assignee: Ortho Vation Medical LLC
    Inventors: Russell G. Olsen, Steven S. Ramboz
  • Patent number: 8459155
    Abstract: According to example configurations, a modified screw head includes one or more slots or grooved channels. A screwdriver device includes a tip that can be inserted into a cavity in the head of the screw to torque the modified screw into an object. The screwdriver device includes a sleeve. The sleeve slides along a shaft of the screwdriver. The sleeve includes inward protruding posts (e.g., pins, fingers, etc.). Sliding of the sleeve over the screw's head requires that inward protruding posts in the sleeve be aligned with the grooves on the sidewall of the screw's head. Subsequent to aligning and sliding the sleeve into the grooved channels of the screw's head, the user twists the sleeve to secure the screw head to the screwdriver's tip. The sleeve can be spring-loaded to pull the head of the screw toward a handle end of the screwdriver after a user releases the sleeve.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: June 11, 2013
    Assignee: Smith & Nephew, Inc.
    Inventors: Eduardo Antonio Canizares, Jr., Graham Smith
  • Publication number: 20130125714
    Abstract: Screw driver-holder apparatuses, systems and methods are provided and can include a screw and a screwdriver. The screw can include a threaded screw body and a screw head, and the screw head can include a socket and a screw head surface surrounding the socket. The screwdriver can include a hollow sleeve with a longitudinal bore and a first end defining a screw engagement surface and a driving shaft positioned within the longitudinal bore of the hollow sleeve and rotatable relative to the hollow sleeve. The driving shaft can further include a first end extending beyond the first end of the hollow sleeve, a second end opposite the first end, and a stop restricting axial movement of the sleeve towards the second end of the driving shaft. The first end can include a protruding tip adapted for engaging the socket of the screw head.
    Type: Application
    Filed: November 29, 2012
    Publication date: May 23, 2013
    Applicant: THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL
    Inventor: THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL
  • Publication number: 20130129447
    Abstract: According to example configurations, a modified screw head includes one or more slots or grooved channels. A screwdriver device includes a tip that can be inserted into a cavity in the head of the screw to torque the modified screw into an object. The screwdriver device includes a sleeve. The sleeve slides along a shaft of the screwdriver. The sleeve includes inward protruding posts (e.g., pins, fingers, etc.). Sliding of the sleeve over the screw's head requires that inward protruding posts in the sleeve be aligned with the grooves on the sidewall of the screw's head. Subsequent to aligning and sliding the sleeve into the grooved channels of the screw's head, the user twists the sleeve to secure the screw head to the screwdriver's tip. The sleeve can be spring-loaded to pull the head of the screw toward a handle end of the screwdriver after a user releases the sleeve.
    Type: Application
    Filed: January 17, 2013
    Publication date: May 23, 2013
    Inventors: Eduardo Antonio Canizares, JR., Graham Smith
  • Publication number: 20130014910
    Abstract: An installation member includes at least two installation portions located on the installation member, each defining an installation hole, at least two resilient members, at least two blocking members, and at least two fasteners. Each fastener comprises a head and a shank. The head defines a receiving groove for preventing a hand tool from disengaging from the head during rotating the fastener. The shank is received the installation hole. Each resilient member is fit on the shank and elastically engaged between the head and the installation portion. Each blocking member is secured on the shank and abuts against a nearest end of the installation portion.
    Type: Application
    Filed: March 8, 2012
    Publication date: January 17, 2013
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (WUHAN) CO., LTD.
    Inventors: MAO-HE ZHU, JIN-BIAO JI, ZHI-JIANG YAO
  • Publication number: 20120312130
    Abstract: A system includes a fastener and a driving tool configured to mate with the fastener. The fastener includes a driving portion having an upper face, a bottom face, and a side wall extending between the upper and bottom faces. Recessed sections extend into the driving portion from the upper face. Each recessed section includes a first wall in spaced relation to a second wall. At least one of the first and second walls is angled to form a wedge-shaped undercut underlying the upper face of the driving portion. The driving tool includes a raised portion extending from a floor of the driving tool. The raised portion has third and forth walls, and at least one of the third and fourth walls is angled relative to the floor to form a wedge-shaped extension section. The extension section engages with the undercut to interlock the driving tool with the fastener during installation and/or removal.
    Type: Application
    Filed: June 8, 2011
    Publication date: December 13, 2012
    Inventor: Jason Bauer
  • Publication number: 20120034049
    Abstract: A ratchet mounting fastener includes a rigid body having a socket drive receiving cavity formed in a first end for receiving a male socket drive shaft into snug mating engagement and releasable locking means to releasably lock the fastener onto the drive shaft, and having a threaded portion on an opposite second end for threaded mating engagement of the threaded portion with a threaded second fastener, the cavity and the threaded portion are oppositely disposed for mounting of the drive shaft to the cavity and mounting of the second fastener to the threaded portion from opposed facing opposite directions.
    Type: Application
    Filed: May 3, 2011
    Publication date: February 9, 2012
    Inventor: GRANT PERRY BROWN
  • Publication number: 20110217143
    Abstract: Various embodiments described herein provide a fastener system having straight walled driving surfaces that provides a reliable stick fit feature, while also improving stability of engagement between the system components. A feature of the new system is to allow engagement of existing standard straight walled drivers in the new system.
    Type: Application
    Filed: September 13, 2010
    Publication date: September 8, 2011
    Inventors: Barry J. Hughes, Gary Dilling
  • Publication number: 20100269644
    Abstract: Disclosed is a screw head having a slot (2) in the upper surface of the screw head, an upper peripheral wall (9) of hexalobular planform extending down into the screw head, the upper peripheral wall (9) being parallel or near parallel to the axis of the screw, a sloping transition surface (15) extending downwardly and inwardly with respect to the lower edge of the upper peripheral wall (9), and a tapered recess (11) extending downwardly from the lower edge of the sloping transition surface (15), in which the dimensions of the screw head are such that when the screw head is engaged by a tool (6) having upper (16) and lower engagement (17) sections, there is a ‘stick fit’ between the surface of the tapered recess (11) and the external surface of the lower engagement section (17), and there is no engagement with the sloping transition surface (15).
    Type: Application
    Filed: April 19, 2010
    Publication date: October 28, 2010
    Inventors: Jone Edland, David Curtis Goss
  • Publication number: 20100192344
    Abstract: A clamping system with a clamping nut and a wrench for tightening the clamping nut, wherein the clamping nut includes at least one recess on either the outside edge or the inside edge of the end face of the clamping nut to receive projections of the wrench. The edge opposite the edge with at least one recess is closed. The at least one recess is provided with at least one undercut, which the projections of the wrench can grip from underneath.
    Type: Application
    Filed: January 28, 2010
    Publication date: August 5, 2010
    Applicant: ZOLLMANN GMBH
    Inventor: Martin ZOLLMANN
  • Publication number: 20100143072
    Abstract: An improved fastener (10) comprises of a threaded shank (11), and a head (12) having a tool engaging recess (13) formed by a plurality of grooves (16) comprising an inner portion located approximately within circumference of shank (11), formed by inclined side walls (28, 31, 32) of part elliptical configurations disposed convexly and symmetrically to central axis and bisector lines; an outer portion formed with pairs of inclined flat drive walls (16a) extending to concentric peripheral arcs (16b) near circumference of head (12) to maximize torque transfer and sharp drive corners (30); sharp interlocking corners (17) separate inner portion from outer portion of the grooves enabling an interlocking action during the turning of the fastener and thus preventing the bit from slipping out even during high resistance to penetration of the fastener; and base walls (19) with an inner portion (22) and an outer portion (21); wherein the grooves extend in radial direction from a central axis (15) and symmetrically spaced
    Type: Application
    Filed: May 9, 2008
    Publication date: June 10, 2010
    Inventor: Cheong Kong Chang
  • Patent number: 7494311
    Abstract: A threaded fastener, such as a screw or a bolt, has a central longitudinal axis in a z-axis direction. The fastener has a head and a threaded shaft. The head has an overhanging periphery in an x-y plane and at least two slots, evenly-spaced apart, that extend completely through the overhanging periphery. Each slot has a sloped surface that undercuts the overhanging periphery in the same tangential direction. The screw is turned by using a bit that has a central longitudinal axis in a z-axis direction. The bit has a shank fixed to an end portion and at least two legs, evenly-spaced apart, extend from the end portion in a z-axis direction. Each leg has a sloped surface that extends in the same tangential direction.
    Type: Grant
    Filed: April 19, 2003
    Date of Patent: February 24, 2009
    Inventor: Richard D. Fuerle
  • Patent number: 7293949
    Abstract: Interference surfaces are constructed on inner transition surfaces between wings of a fastener having a spiral recess. A portion of the transition surface is tapered to provide the interference. A standard driver for a spiral recess will engage the interference surface to create a “stick fit” engagement. The punch is formed using a wire EDM operation to construct tapered surfaces within the die cavity of a hob. The hob is machined down to obtain the desired depth, which is measured up from a gage spot indicative of the sticking point.
    Type: Grant
    Filed: April 15, 2004
    Date of Patent: November 13, 2007
    Assignee: Phillips Screw Company
    Inventor: Gary Dilling
  • Patent number: 7255522
    Abstract: The fastener of this application is designed to facilitate the insertion of rotating power driven tools into the fastener recess. The recess of this fastener generally uses spirally configured driving surfaces and is formed in a counterbore in the upper surface of the fastener. The driving lobes have upper surfaces that are depressed a distance into the counterbore. A ramp surface is formed on each of the upper surfaces that causes a spinning bit to fall into the recess in an engaged manner. The ramp surfaces are constructed with both removal and installation ramp portions.
    Type: Grant
    Filed: October 7, 2004
    Date of Patent: August 14, 2007
    Assignee: Phillips Screw Company
    Inventor: Gary Dilling
  • Patent number: 7198306
    Abstract: A spring-biased locking bolt with an operating button and a bolt connected with the operating button is described, wherein the bolt is spring-biased and movable in a sleeve. The sleeve is screwed into a corresponding opening in a machine part or an item of furniture, wherein the bolt can engage in the opening. The locking bolt has an optional catch that fixes the pulled-out bolt in its raised position. A sleeve section oriented in an axial direction is formed on the operating button, wherein the longitudinally movable and spring-biased sleeve engages with its polygonal shoulder with the polygonal opening.
    Type: Grant
    Filed: August 17, 2004
    Date of Patent: April 3, 2007
    Assignee: Otto Ganter GmbH & Co. KG
    Inventor: Peter Ambs
  • Patent number: 6988432
    Abstract: A screw and driver system includes a range of screws and a driver. Each screw has a head having a driving recess in its surface for engagement by the driver. The recess of larger screws in the range have a plurality of superimposed recess tiers of decreasing size with increasing depth from said surface. Each tier has substantially parallel driving surfaces and torque applied to the driver is transmitted to the screw through the driving surfaces. At least one tier of at least smaller screws in the range has a rib. Engagement of the driver with the recess causes deformation of rib, and hence creation of an interference fit of the driver in the recess.
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: January 24, 2006
    Assignee: Uniscrew Worldwide, Inc.
    Inventor: Laurence Antony Brooks
  • Patent number: 6620167
    Abstract: According to this invention an orthopedic screw having a first portion and a second portion is disclosed, wherein said first portion comprises a head having a substantially smooth exterior surface and further comprising a recessed portion, wherein said recessed portion comprises a polygonal shape and a deflection beam, such that said first portion receives a driver head within said recessed potion, and wherein said second portion comprises an elongated portion adapted for insertion into a substrate.
    Type: Grant
    Filed: October 17, 2001
    Date of Patent: September 16, 2003
    Inventors: Ricahrd J. Deslauriers, Robert T. Potash, John R. Pepper
  • Patent number: 6526851
    Abstract: A screw has a head portion and a threaded portion. The head portion has an undercut slot extending across it. The slot has a flat floor and sloping sides and the width of the floor of the slot is greater than the width at the top opening of the slot. A matching bit has a shank portion and a flat portion. The flat portion of the bit is not as wide as the top opening of the slot. The flat portion has a foot extending from each end.
    Type: Grant
    Filed: June 14, 2002
    Date of Patent: March 4, 2003
    Inventor: Richard D. Fuerle
  • Patent number: 6361258
    Abstract: Fasteners and devices and methods for placing fasteners in a workpiece are disclosed. More particularly, non-removable permanently-placeable fasteners for placement in a workpiece to hold elements thereof together, permanently-placeable but removable fasteners for placement in a workpiece to hold elements thereof together, headless removable one-way fastener inserter or heads by which the fasteners are placed, tools for permanently placing such fasteners, tools for removing certain of the fasteners and methods by which such fasteners are placed in, and in some cases removed from a workpiece.
    Type: Grant
    Filed: July 6, 2000
    Date of Patent: March 26, 2002
    Inventor: Gary V. Heesch
  • Patent number: 6345472
    Abstract: An apparatus for use in concrete construction is characterized by a body having a first portion configured to be set into concrete during the casting of that concrete, and which can be removed from the concrete after the concrete has set, and thereby may be reused in a similar manner with other concrete castings. The body of the apparatus is preferably generally cylindrical and preferably includes a serrated exterior surface. The body also preferably includes a second portion configured to facilitate removal of the apparatus from the concrete, and further includes an engagement member with which other devices may be engaged. The second portion may also be engageable with an alignment member to facilitate the accuracy of insertion and removal of the apparatus from the concrete. The serrated exterior preferably interferingly engages with at least one reinforcing element formed in the concrete, to assist in positioning of the concrete.
    Type: Grant
    Filed: June 9, 1997
    Date of Patent: February 12, 2002
    Inventor: Warren Taylor
  • Patent number: 6148699
    Abstract: A screwdriver has a shaft with a bit on one end for engaging a bit receptacle formed on a head of a screw and a screw engaging device coupled to and in surrounding relation to the shaft. The screw engaging device defines a cylindrical void configured to receive and place the head of the screw onto the bit. The inner wall of the screw engaging device defining the cylindrical void has at least one tab extending toward the center of the center of the cylindrical void for engaging the head of the screw. Preferably, there are four tabs disposed evenly space on the inner wall of the screw engaging device. The screw engaging device has a first sleeve defining the cylindrical void and oppositely disposed slots. A second sleeve is coupled to the first sleeve to form the cylindrical void for receiving the shaft therethrough. The shaft has oppositely facing receptacles formed on the outer circumference of the shaft.
    Type: Grant
    Filed: August 26, 1997
    Date of Patent: November 21, 2000
    Inventor: Ki Su Han
  • Patent number: 5851096
    Abstract: A ratcheted nut assembly is provided to enable a nut to be tightened onto a bolt in a limited area. The ratcheted nut assembly includes an internally threaded nut that has radially extending teeth on its outer surface. The nut is held rotatably captive within an elongated housing that has a generally "Y" shaped ratchet member pivoted so that the ratchet member may have pawls that are formed on it engaged with the teeth of the nut to rotate the nut. The operator positions the ratchet member into engagement with the radially extending teeth on the nut depending upon which direction the operator desires to turn the nut. The ratchet mechanism remains with the nut after the nut is tightened.
    Type: Grant
    Filed: April 22, 1997
    Date of Patent: December 22, 1998
    Inventor: Raymond F. Lackner
  • Patent number: 5722838
    Abstract: A fastener system includes a fastener and a driver tool in which the fastener includes a cavity for insertion of the driver tool and in which the driver tool and the fastener form an interlocking relationship between the driver tool and the fastener is formed by having a portion of the fastener overlie a portion of the driver tool. This interlocking relationship prevents accidental separation of the driver tool from the fastener and consequent marring of the surfaces of the work pieces being joined together and also prevents stripping of the driver tool and the fastener cavity.
    Type: Grant
    Filed: February 14, 1994
    Date of Patent: March 3, 1998
    Inventor: Imre Czegledi
  • Patent number: 5697743
    Abstract: A tamper proof threaded fastener construction (10) comprising a conventional elongated threaded fastener body member (20) having an enlarged head member (30) provided with a contoured and tapered frangible member (40) which is used to drive the fastener construction (10) in a rotatable fashion, and when the frangible member (40) is removed leaves an irregular surface (45) which prevents the fastener construction (10) from being rotatably driven in any direction.
    Type: Grant
    Filed: October 4, 1996
    Date of Patent: December 16, 1997
    Inventor: Stanley F. Parker
  • Patent number: 5680690
    Abstract: The method of connecting two workpiece sheets using a rivet, one sheet have a bore, and a counterbore which is frusto-conical and tapers forwardly between a side of the one sheet and the bore, and toward the bore that includes providing a metallic rivet having an axially extending shank defining an axis; providing the rivet with a head having an end face and a forwardly tapered frusto-conical section located forwardly of the end face; installing the shank in the bore and the head in the counterbore so that the periphery of the head end face is substantially flush with the work surface, the end face formed to provide a ring-shaped dome protruding axially in a rearward direction, the dome located to extend about the axis in substantially axial alignment with the outer surface of the shank; the rivet head provided with a peripheral side wall spaced radially from a side wall defined by the workpiece counterbore, and the space between the side walls having a volume A; the dome provided with a metallic volume B; an
    Type: Grant
    Filed: May 24, 1996
    Date of Patent: October 28, 1997
    Assignee: Franklin S. Briles
    Inventors: Franklin S. Briles, John A. Aurentz
  • Patent number: 5647253
    Abstract: This invention relates to a method and apparatus for fastening two members together with a theft resistant screw having a head with a top surface which is free of any engageable indentations or protrusions, with an independent means to drive the screw.
    Type: Grant
    Filed: April 21, 1995
    Date of Patent: July 15, 1997
    Inventor: Juraj Pozek
  • Patent number: 5582548
    Abstract: A fastener system includes a fastener and a driver tool in which the fastener includes a cavity for insertion of the driver tool and in which the driver tool and the fastener form an interlocking relationship between the driver tool and the fastener is formed by having a portion of the fastener overlie a portion of the driver tool. This interlocking relationship prevents accidental separation of the driver tool from the fastener and consequent marring of the surfaces of the work pieces being joined together and also prevents stripping of the driver tool and the fastener cavity.
    Type: Grant
    Filed: July 22, 1991
    Date of Patent: December 10, 1996
    Inventor: Imre Czegledi
  • Patent number: 5562547
    Abstract: The present invention relates to a burred fastener for forming a friction fit between the fastener and a driver. The friction fit retains the fastener in contact with the driver during insertion, tightening and loosening of the fastener into a work surface. Burrs are formed in the inner side surfaces of an indentation or slot formed in the fastener head. A method for forming the burred fasteners includes striking the screw head with a deformation object.
    Type: Grant
    Filed: August 12, 1994
    Date of Patent: October 8, 1996
    Inventor: Richard Borzone
  • Patent number: 5484440
    Abstract: A bone screw screwdriver and method for securely, positively locking a bone screw to the screwdriver. The screwdriver includes an extending handle through which a drive rod is slidingly disposed. A tongue at one end of the drive rod interlocks within a groove in the bone screw. The drive rod selectively locks within the handle to positively interlock the bone screw with the screwdriver. A tab on the screwdriver engages a corresponding recess on the bone screw to prevent rotation and removal of the bone screw from the screwdriver.
    Type: Grant
    Filed: August 18, 1994
    Date of Patent: January 16, 1996
    Assignee: Zimmer, Inc.
    Inventor: Randall N. Allard
  • Patent number: 5438895
    Abstract: A fastening system comprises a driving tool formed with a rectangular-shaped bit at its driving end, and a fastener such as a screw whose head is formed with a recess defining a central slot and four spaced undercuts each having parallel upper and lower walls and a side wall perpendicular thereto. The bit of the driving tool is inserted within the central slot of the recess and then rotated such that the side edges of the rectangular bit contact the side walls of two of the undercuts, and the top wall and bottom surface of the bit frictionally engages the upper and lower walls of such undercuts. Frictional engagement between the undercuts and the driving tool bit provides a positive, temporary interlock therebetween, and contact between the side edges of the driving tool and side walls of the undercuts permits the transfer of torque over a large surface to reduce wear.
    Type: Grant
    Filed: April 29, 1994
    Date of Patent: August 8, 1995
    Inventors: Marvin Bassell, David Byron, Robert J. Catanzaro
  • Patent number: 5439339
    Abstract: An interference fit fastener and threaded puller attachment in combination. The fastener has a shank with an external thread and an axial recess with an internal thread, the threads being of opposite hands. The puller attachment is threadly engaged to the internal thread so as to exert an axial pull on the fastener, and to resist torque exerted on a nut or collar being applied to the external thread. After the fastener is set, the puller is removed.
    Type: Grant
    Filed: December 1, 1993
    Date of Patent: August 8, 1995
    Assignee: Hi-Shear Corporation
    Inventor: John S. Batchelor
  • Patent number: 5366330
    Abstract: A fastener head having a pair of recesses formed therein, a ledge in each recess being located a short distance axially below the head surface and extending a predetermined angular length from the axial portion of the ledge. The dimension of the ledge is adjustable to accommodate the strength of the fastener material in a manner such that the displacement formation of recess material on the surface of the fastener head is prevented during normal installation procedures. The drive angle on the recess is designed to be zero degrees.
    Type: Grant
    Filed: July 26, 1993
    Date of Patent: November 22, 1994
    Assignee: VSI Corporation
    Inventor: Frank J. Cosenza
  • Patent number: 5338142
    Abstract: A quick release mechanism for securing a part to the frame of a bicycle. The mechanism includes an axially elongated skewer element adapted to be mounted to the frame. A fastening element is rotatably mounted on the skewer element for securing the part to the frame upon relative rotation of the skewer and fastening elements in a first direction and for releasing the part upon relative rotation of the skewer and fastening elements in a second direction. Ratchet means is attached to one of the elements for turning that element to selectively effect relative rotation of the two elements in the first and second directions. Hardened lock washers are embedded in the confronting faces of the fastening element and a washer mounted on the skewer.
    Type: Grant
    Filed: July 7, 1992
    Date of Patent: August 16, 1994
    Inventor: Michael Gonzales
  • Patent number: 5120173
    Abstract: A screw head is provided with ribs on some of the driver engageable surfaces. The rib is slanted outwardly from the screw axis by a small angle between 1.degree. and 10.degree..
    Type: Grant
    Filed: July 26, 1991
    Date of Patent: June 9, 1992
    Assignee: Phillips Screw Company
    Inventor: John H. Grady
  • Patent number: 5116337
    Abstract: A screw for fixation of a tendon/bone graft during an arthroscopic surgical procedure includes a smooth conical forward end having a rounded tip and a spiral thread running from a position behind the smooth rounded forward end to a rearward end of the screw. The depth of the thread is shallower than a conventional screw and the exterior edge of the thread is rounded to decrease cutting and fragmentation of the tendon and bone. The screw includes an internal bore with left- and right-handed threaded portions for engagement with insertion and extraction instruments. In the method, the bone graft is harvested and sized as desired. A graft socket is drilled in the bone and then serially sized with increasingly larger sizing instruments to compact the bone and size the graft socket to the graft. A smooth bore screw socket is created by serially dilating a space between the graft and graft socket with increasingly larger dilating instruments, thereby also compacting the graft.
    Type: Grant
    Filed: June 27, 1991
    Date of Patent: May 26, 1992
    Inventor: Lanny L. Johnson
  • Patent number: 5098238
    Abstract: A fastener for use in fatigue resistant structures such as aircraft wings. The fastener is installed into interference fit by tool engagement in a tapped hole coaxial with the threaded end of the pin, at the threaded end of the fastener pin. The tapped hole is engaged by a hardened mandrel which is detachably threaded into the threaded hole in the pin. The mandrel has an extending tail end which may be gripped by a pulling tool after the threaded end of the pin is partially inserted into the workpiece with the mandrel extending through the workpiece. The tail end of the mandrel is engaged by a pulling tool that can be manually or power actuated to pull the interference fit shank into the structure workpiece to produce a fatigue resistant interference between the pin shank diameter and the workpiece hole diameter.
    Type: Grant
    Filed: December 20, 1990
    Date of Patent: March 24, 1992
    Assignee: Hi-Shear Corporation
    Inventors: John S. Batchelor, Edward G. Brooks
  • Patent number: 5079935
    Abstract: A lock operable by a key between a locked condition and an open condition, the lock having a fastener for releasably securing the lock to an object, the fastener being movable between a retracted position wherein the lock is in the open condition and an extended position, a spring for biasing the fastener to the retracted position and an enclosure having an opening adapted to allow the insertion and removal of the key from the lock when the lock is in the locked condition and to prevent the removal of the key from the lock when the lock is in an unlocked condition.
    Type: Grant
    Filed: August 9, 1990
    Date of Patent: January 14, 1992
    Inventor: John A. Zaucha
  • Patent number: 5017069
    Abstract: A sleeve bolt for coupling together workpieces including a cylindrical sleeve having a cylindrical outer surface and an axial bore with a radially interior surface of polygonal configuration at one end and internal threads at the other end. An inner slide member with a polygonally shaped cross-sectional configuration positioned within the bore at the polygonally configured end for movement between a retracted orientation totally within the cylindrical sleeve and a protruding orientation partially withdrawn from the cylindrical sleeve. A coupling connects the inner slide member for sliding movement along the longitudinal axis of the sleeve between the retracted and protruding orientation and includes stop means connected to the sleeve for defining the limits of movement of the slide member between retracted and protruding orientations.
    Type: Grant
    Filed: August 30, 1989
    Date of Patent: May 21, 1991
    Assignee: Northrop Corporation
    Inventor: Edgar L. Stencel
  • Patent number: 4911593
    Abstract: A threaded fastener organization is set forth wherein an axially threaded shank includes an enlarged overlying head wherein the head is provided with a square prismatic recess formed through an upper surface of the head and wherein the recess is formed with planar walls, each aligned parallel to the axis of the threaded shank. Each wall includes a semi-spherical recess for reception and engagement with a detent sphere associated in a conventional ratchet driver.
    Type: Grant
    Filed: May 2, 1989
    Date of Patent: March 27, 1990
    Inventor: R. Dewain Kephart
  • Patent number: 4856953
    Abstract: A combination of a screw with a hook includes a screw fixed on a wall having a pair of longitudinal grooves formed in a cylindrical hole in the screw, and a hook having a cylindrical shank with a pair of longitudinal extensions engageable with the two longitudinal grooves in the screw, so that a hook inserted in the screw may be replaced with another new hook or different shaped hook.
    Type: Grant
    Filed: June 29, 1988
    Date of Patent: August 15, 1989
    Inventor: Ming-Tang Lin
  • Patent number: 4685848
    Abstract: A rotatable fastener has a head portion with an axially facing ring gear engageable with a complementary gear of a drive tool. In a preferred embodiment, the ring gear is a rearwardly facing beveled gear for use with a beveled drive gear and the head portion defines a forwardly directed thrust surface engageable by a bearing surface of the drive tool to urge the drive gear against the ring gear. In another embodiment, the fastener has a telescoping structure in which an internally threaded torque element is slidably received within a central passage of the head portion.
    Type: Grant
    Filed: February 12, 1985
    Date of Patent: August 11, 1987
    Inventor: Alfred C. Langer
  • Patent number: 4615554
    Abstract: A screw-in fastener for an anchor embedded in a precast concrete element includes a coupling member, to which a transport anchor is applied, a threaded pin insertable into the anchor positioned within the concrete element, and a supporting plate, from which the pin outwardly extends. The supporting plate has a circular end face supported against the upper surface of the concrete element.
    Type: Grant
    Filed: July 2, 1984
    Date of Patent: October 7, 1986
    Assignee: Deha Baubedarf GmbH & Co. KG
    Inventors: Henning Schilla, Ernst Hatz, Eckart Zipf
  • Patent number: 4572039
    Abstract: An interlocking lock screw and screwdriver which prevents the specially designed screwdriver blade with guide dimples from slipping out of a specially designed screw head with a screwdriver guide channel and guide dimple entry apertures. The screwdriver may be used in any position including sideways and directly overhead. A rotational locking system is provided which allows a user to drive a staple or brad through the screw head locking it in place or a decorative locking cap may be used. A decorative non-locking cap is also provided which is easy to install yet easily stays in place.
    Type: Grant
    Filed: May 30, 1984
    Date of Patent: February 25, 1986
    Inventor: Warren Desjardins
  • Patent number: 4539874
    Abstract: A tool driver and fastener that prevents the driver from lifting up off the fastener. The fastener has at least one undercut slot that matches with a blade on the driver to prevent uplift. The driving tool and fastener mate with one another and have respective cross-sectional configurations that can interlock temporarily for allowing a screw or a bolt with a slot or head with a plurality of sides to be driven into or removed from a work place without movement of the driver up off of the fastener. The driver may be a screw driver or wrench with a blade in a plane transversed to the longitudinal axis of rotation of the driver. The fastener may include a main slot in one plane containing the center line of the fastener and a second slot transverse to the first slot and perpendicular to the first slot.
    Type: Grant
    Filed: March 9, 1984
    Date of Patent: September 10, 1985
    Inventor: Bernard Jacovitz
  • Patent number: 4538486
    Abstract: A non-slip screw of the type having a threaded shank and a slotted head, including a locking surface defined in the screw head by a central transverse slot which extends across the top of the head for engagement with a screwdriver blade tip. The locking surface includes a pair of radially outwardly extending inclined walls extending downwardly from each end of the transverse slot. An especial screwdriver having its exterior blade tip configured complementally with the pairs of radially outwardly extending inclined walls is engageable with the locking surface, so as to rotate the screw head in either direction. The screw head is characterized by its positive grip with the screwdriver blade tip, notwithstanding actual screwdriving or unscrewing and removal of the screw.
    Type: Grant
    Filed: November 21, 1983
    Date of Patent: September 3, 1985
    Inventor: Jacques Lutrat
  • Patent number: 4526071
    Abstract: A tool in the nature of a screwdriver engageable with the end of a screw or other type of fastener, the implement and fastener being so arranged that, when engaged for use the hazard of inadvertent disengagement is reliably precluded.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: July 2, 1985
    Inventor: Melvin Post