Change-over mechanism for operating screwdriver in automatic or

Details Change-over mechanism for operating screwdriver in automatic or Change-over mechanism for operating screwdriver in automatic or

1979-02-15

1981-12-22

Kunin, Stephen G.

Bridges

B25B 1700

Patent

active

043065996

ABSTRACT:
A screwdriver main body supports a shank which is axially slidable and rotatable with respect thereto. A change-over ring supports a latch pawl which is turnable by its engagement with the ring mechanism. The pawl, when turned inward, locks the shank and prevents it from axial, slidable and rotatable movement with respect to the main body.

REFERENCES:
patent: 568341 (1896-09-01), Edwards et al.
patent: 924372 (1909-06-01), Peck
patent: 1054142 (1913-02-01), Plein
patent: 1118250 (1914-11-01), Wilder
patent: 1304714 (1919-05-01), Starrett
patent: 1578866 (1926-03-01), Swain
patent: 2947334 (1960-08-01), Issartel

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