Extensible ratchet wrench

Details Extensible ratchet wrench Extensible ratchet wrench

1994-06-14

1995-12-05

Meislin, D. S.

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

811772, 403109, B25G 104

Patent

active

054718996

ABSTRACT:
An extensible ratchet wrench has a main inner shaft with a ratchet head at one end, aligned lock pin holes along the shaft, and a lengthwise grooved guiding track disposed on the opposite side of the shaft. An outer sleeve is mounted telescopically and fits snugly about the main shaft for axial movement relative thereto. The proximal end of the sleeve is of reduced outside thickness with oppositely disposed holes for receiving both bearings, the holes being aligned with the shaft lock pin holes and guiding track. A locking collar disposed about the proximal end fits about the proximal end of the sleeve and has a spirally grooved interior at its distal end for receipt of a spring and internal ball bearing channels at its proximal end.

REFERENCES:
patent: 2893765 (1959-07-01), Lyon
patent: 2955854 (1960-10-01), Musser
patent: 3722903 (1973-03-01), Jones
patent: 4586406 (1986-05-01), Howard
patent: 4957387 (1990-09-01), Nasu
patent: 4960015 (1990-10-01), Mathews
patent: 5366313 (1994-11-01), LaBarre

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