Wrench for removing damaged stud bolts

Details Wrench for removing damaged stud bolts Wrench for removing damaged stud bolts

1998-10-09

2000-06-13

Scherbel, David A.

Tools

Wrench, screwdriver, or driver therefor

Stud-removal and implacement

81 902, 81 903, B25B 1350

Patent

active

060735201

ABSTRACT:
A wrench for removing stud bolts that are damaged in place, lost the bolt head and/or the bolt shank is broken, basically including a socket assembly having a housing with upper and annular walls, a tubular handle assembly and gripping toothed dog members removably mounted inside the socket assembly. The annular wall has an inner cam-shaped surface with cam members inwardly protruded that limit the angular displacement of the gripping toothed dog members when a user actuates the handle assembly. The gripping toothed dog members are arcuate including a plurality of inwardly projected gripping teeth that grasp the exposed surface of the damaged stud bolt when the user pushes and rotates the wrench assembly.

REFERENCES:
patent: 2550929 (1951-05-01), Keiser
patent: 4724730 (1988-02-01), Mader et al.
patent: 4970917 (1990-11-01), McCollom
patent: 5315902 (1994-05-01), Ragland et al.

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