Socket for turning fastener heads having deformed head surfaces

• US 5,123,310 A
• Filed: 02/22/1991
• Issued: 06/23/1992
• Est. Priority Date: 02/22/1991
• Status: Expired due to Fees

• Current Assignee: MCNC, Inc.
• Original Assignee: MCNC, Inc.
• Inventors: McManus, Christopher L.
• Primary Examiner(s): Kisliuk, Bruce M.
• Assistant Examiner(s): Cruz, Lawrence
• Application Number:
  US07/659,990
• Time in Patent Office: 487 Days
• Field of Search: 81/125 C, 81/121.1 X, 81/53.2, 81/909
• US Class Current: 81/125
• CPC Class Codes: B25B 13/06 of socket type
• CPC Class Codes: B25B 23/108 the driving bit being a Philips type bit, an Allen type bit or a socket
• CPC Class Codes: B25B 27/18 withdrawing broken threaded parts or twist drills

Abstract

A socket for grippingly engaging the polygonal portion of a threaded fastener having deteriorated head surfaces and for transferring a moment from a tool to the fastener to turn the fastener. The socket includes a socket body, a receptacle for mating with a drive end of tool, a polygonal receptacle for receiving the polygonal portion of a fastener, and at least one set screw mounted in the socket body for urging a fastener received within the polygonal receptacle against a wall segment of the polygonal receptacle. A wrench for turning the socket is also disclosed.

Claims

1. A socket for grippingly engaging the polygonal portion of a threaded fastener and transferring a torque from a tool to the fastener to turn the fastener, said socket comprising:

a socket body having a longitudinal axis and first and second ends transverse thereto;

a rectangular opening defined by said socket body at said first end for mating with a drive end of a tool for rotating said socket body about said longitudinal axis;

a polygonal receptacle having a plurality of wall segments defined by said socket body at said second end for receiving the polygonal portion of a fastener; and

at least one engagement means mounted in said socket body adjacent said second end and which extends into said polygonal receptacle, said engagement means being adjustable toward and away from said polygonal receptacle for engaging a fastener received within said polygonal receptacle to urge the fastener against at least one said wall segment of said polygonal receptacle, whereby a fastener having deformed polygonal surfaces may be securely grasped for turning.

2. A socket as defined in claim 1 wherein said engagement means comprise at least one threaded hole radially penetrating said socket body, and a set screw received therein which is adjustable toward and away from said polygonal receptacle to engage a fastener.

3. A socket as defined in claim 2 wherein said set screw includes means for engaging an allen wrench.

4. A socket as defined in claim 1 wherein said engagement means comprise two threaded holes, such that the axes of said holes form an angle of approximately 60°

relative to one another in a plane generally perpendicular to said longitudinal axis of said socket body, and a set screw extending through each said threaded hole, said set screws being adjustable toward and away from said polygonal receptacle to engage a fastener.

5. A socket as defined in claim 4 wherein said set screws are adjustable in a direction perpendicular to and intersecting said longitudinal axis of said socket body.

6. A socket as defined in claim 1 wherein said polygonal receptacle comprises a hexagonal opening having six said wall segments.

7. A socket as defined in claim 6 wherein said engagement means is centered on at least one said wall segment.

8. A socket as defined in claim 1 wherein said polygonal receptacle comprises a dodecagonal opening having twelve said wall segments and alternating acute and obtuse vertices.

9. A socket as defined in claim 8 wherein said engagement means is positioned on at least one said acute vertex.

10. A socket as defined in claim 1 wherein said engagement means is substantially flush with the outer surface of said socket body to permit said socket to engage and turn a fastener positioned within a recessed area.

11. A socket for grippingly engaging the head portion of a threaded fastener and transferring a torque from a tool to the fastener head to turn the fastener, said socket comprising:

a generally tubular socket body having a longitudinal axis and first and second ends transverse thereto;

means defined by said socket body at said first end for mating with a drive end of a tool for rotating said socket body about said longitudinal axis;

a polygonal receptacle having a plurality of wall segments defined by said socket body at said second end for receiving the head portion of a fastener;

two threaded holes displaced at least about 0.0675 inch from said second end and radially penetrating said socket body at an angle of about 60°

relative to one another in a plane substantially perpendicular to said longitudinal axis of said socket body and opening into said polygonal receptacle; and

two set screws between about 0.1 and 0.5 inch in diameter which are received within said threaded holes substantially entirely beneath the outer surface of said socket body and which may be adjusted toward and away from said polygonal opening, whereby said socket body may extend into a recessed area to reach a fastener head therein having deformed head surfaces, whereby the fastener head may be positioned within said polygonal receptacle and whereby said set screws may engage flat portions of the fastener head to urge the head against at least one said wall segment of said polygonal receptacle, thereby retaining the fastener head in a fixed position relative to said polygonal receptacle to securely grasp the fastener for turning.

12. A socket as defined in claim 11 wherein said polygonal receptacle comprises a hexagonal opening having six said wall segments and wherein said threaded holes are centered on adjacent wall segments of said opening.

13. A socket as defined in claim 11 wherein said polygonal receptacle comprises a dodecagonal opening having twelve said wall segments and alternating acute and obtuse vertices and wherein said threaded holes are centered on two said acute vertices.

14. A tool for grippingly engaging the polygonal portion of a threaded fastener and transferring a torque to the fastener to turn the fastener, said tool comprising:

a wrench having a drive end and an extended handle for generating a torque about said drive end;

a ratchet mounted on said drive end so that turning of said extended handle will exert a torque about said drive end in one direction only;

a socket body driven by said drive end and having a longitudinal axis and first and second ends transverse thereto;

a polygonal receptacle having a plurality of wall segments defined by said socket body at said second end for receiving the polygonal portion of a fastener; and

at least one engagement means mounted in said socket body adjacent said end and which extends into said polygonal receptacle, said engagement means being adjustable toward and away from said polygonal receptacle for engaging a fastener received within said polygonal receptacle to urge the fastener against at least one said wall segment of said polygonal receptacle, whereby a fastener head having deformed surfaces may be securely grasped for turning.

15. A tool as defined in claim 14 wherein said engagement means comprise at least one threaded hole radially penetrating said socket body, and a set screw received therein which is adjustable toward and away from said polygonal receptacle to engage a fastener head.

16. A tool as defined in claim 15 wherein said set screw includes means for engaging an allen wrench.

17. A tool as defined in claim 14 wherein said polygonal receptacle comprises a hexagonal opening having six said wall segments.

18. A tool as defined in claim 17 wherein said engagement means is centered on at least one said wall segment.

19. A tool as defined in claim 14 wherein said polygonal receptacle comprises a dodecagonal opening having twelve said wall segments and alternating acute and obtuse vertices.

20. A tool as defined in claim 19 wherein said engagement means is positioned on at least one said acute vertex.

21. A tool as defined in claim 14 wherein said engagement means is substantially flush with the outer surface of said socket body to permit said socket to engage and turn a fastener positioned within a recessed area.

22. A tool as defined in claim 14 further comprising a rectangular opening defined by said socket body at said first end for mating with said drive end of said wrench.

23. A socket wrench for grippingly engaging the polygonal portion of a threaded fastener and transferring a torque to the fastener to turn the fastener, said set comprising:

at least one wrench having a drive end and an extended handle for generating a torque about said drive end;

a ratchet mounted on said drive end so that turning of said extended handle will exert a torque about said drive end in one direction only;

a plurality of socket bodies each having a longitudinal axis and first and second ends transverse thereto;

means defined by each said socket body at said first end for mating with said drive end of said wrench;

a polygonal receptacle having a plurality of wall segments defined by each said socket body at said second end for receiving the polygonal portion of a fastener, each said polygonal receptacle in each said socket body having a size different from all other receptacles in said set; and

at least one engagement means mounted in each said socket body adjacent said second end and which extends into said polygonal receptacle, said engagement means being adjustable toward and away from said polygonal receptacle for engaging a fastener received within said polygonal receptacle to urge the fastener against at least one wall segment of said polygonal receptacle, whereby a fastener having deformed polygonal surfaces may be securely grasped for turning.

24. A socket wrench set as defined in claim 23 wherein said engagement means comprise at least one threaded hole radially penetrating each said socket body, and a set screw received therein which is adjustable toward and away from said polygonal receptacle to engage a fastener.

25. A socket wrench set as defined in claim 23 wherein said means defined by each said socket body at said first end for mating with said drive end of said wrench is a rectangular opening.

26. A socket set for grippingly engaging the polygonal portion of a threaded fastener and transferring a torque to the fastener to turn the fastener, said set comprising:

a plurality of socket bodies each having a longitudinal axis and first and second ends transverse thereto;

a rectangular opening defined by each said socket body at said first end for mating with a drive end of a tool for rotating said socket body about said longitudinal axis;

a polygonal receptacle having a plurality of wall segments defined by said socket body at said second end for receiving the polygonal portion of a fastener, each said polygonal receptacle in each said socket body having a size different from all other receptacles in said set; and

at least one engagement means mounted in each said socket body adjacent said second end and which extends into said polygonal receptacle, said engagement means being adjustable toward and away from said polygonal receptacle for engaging a fastener received within said polygonal receptacle to urge the fastener against at least one wall segment of said polygonal receptacle, whereby a fastener having deformed polygonal surfaces may be securely grasped for turning.

27. A socket set as defined in claim 26 wherein said engagement means comprise at least one threaded hole radially penetrating each said socket body, and a set screw received therein which is adjustable toward and away from said polygonal receptacle to engage a fastener.

28. A socket for grippingly engaging the flattened portion of a threaded fastener and transferring a torque from a took to the fastener to turn the fastener, said socket comprising:

a socket body each having a longitudinal axis and first and second ends transverse thereto;

a rectangular opening defined by each said socket body at said first end for mating with a drive end of a tool for rotating said socket body about said longitudinal axis;

a receptacle having at least one flattened wall segment defined by said socket body at said second end for receiving the flattened portion of a fastener; and

at least one engagement means mounted in said socket body adjacent said second end and which extends into said receptacle, said engagement means being adjustable toward and away from said receptacle for engaging a fastener received within said receptacle to urge the flattened portion of the fastener against said at least one flattened wall segment of said receptacle, whereby a fastener having deformed surfaces may be securely grasped for turning.

29. A socket as defined in claim 28 wherein said engagement means comprise at least one threaded hole radially penetrating said socket body, and a set screw received therein which is adjustable toward and away from said receptacle to engage a fastener.

30. A socket as defined in claim 29 wherein said set screw is adjustable in a direction perpendicular to and intersecting said longitudinal axis of said socket body.

31. A socket as defined in claim 28 wherein said engagement means is substantially flush with the outer surface of said socket body to permit said socket to engage and turn a fastener positioned within a recessed area.

32. A tool for grippingly engaging the polygonal portion of a threaded fastener and transferring a torque to the fastener to turn the fastener, said tool comprising:

a wrench having a drive end and an extended handle for generating a torque about said drive end;

a socket body driven by said drive end and having a longitudinal axis and an end transverse thereto;

a polygonal receptacle having a plurality of wall segments defined by said socket body at said end for receiving the polygonal portion of a fastener;

two threaded holes radially penetrating said socket body, said threaded holes forming an angle of approximately 60°

relative to one another in a plane generally perpendicular to said longitudinal axis of said socket body; and

a set screw extending through each said threaded hole, each said set screw being adjustable toward and away from said polygonal receptacle for engaging a fastener head received within said polygonal receptacle to urge the fastener head against at least one said wall segment of said polygonal receptacle, whereby a fastener head having deformed head surfaces may be securely grasped for turning.

33. A tool as defined in claim 32 wherein said set screws are adjustable in a direction perpendicular to and intersecting said longitudinal axis of said socket body.

34. A socket wrench for grippingly engaging the polygonal portion of a threaded fastener and transferring a torque to the fastener to turn the fastener, said set comprising:

at least one wrench having a drive end and an extended handle for generating a torque about said drive end;

a plurality of socket bodies each having a longitudinal axis and first and second ends transverse thereto;

means defined by each said socket body at said first end for mating with said drive end of said wrench;

a polygonal receptacle having a plurality of wall segments defined by each said socket body at said second end for receiving the polygonal portion of a fastener, each said polygonal receptacle in each said socket body having a size different from all other receptacles in said set;

two threaded holes radially penetrating each said socket body, said holes forming an angle of approximately 60°

relative to one another in a plane generally perpendicular to said longitudinal axis of each said socket body; and

a set screw extending through each said threaded hole, each said set screw being adjustable toward and away from said polygonal receptacle for engaging a fastener received within said polygonal receptacle to urge the fastener against at least one said wall segment of said polygonal receptacle, whereby a fastener having deformed polygonal surfaces may be securely grasped for turning.

35. A socket set for grippingly engaging the polygonal portion of a threaded fastener and transferring a torque to the fastener to turn the fastener, said set comprising:

a plurality of socket bodies each having a longitudinal axis and first and second ends transverse thereto;

means defined by each said socket body at said first end for mating with a drive end of a tool for rotating said socket body about said longitudinal axis;

a polygonal receptacle having a plurality of wall segments defined by said socket body at said second end for receiving the polygonal portion of a fastener, each said polygonal receptacle in each said socket body having a size different from all other receptacles in said set; and

two threaded holes radially penetrating each said socket body, such that the axes of said holes form an angle of approximately 60°

relative to one another in a plane generally perpendicular to said longitudinal axis of each said socket body; and

a set screw extending through each said threaded hole, each said screw being adjustable toward and away from said polygonal receptacle for engaging a fastener received within aid polygonal receptacle to urge the fastener against at least one said wall segment of said polygonal receptacle, whereby a fastener having deformed polygonal surfaces may be securely grasped for turning.