Rachet spanner with open mouth

Details Rachet spanner with open mouth Rachet spanner with open mouth

1988-10-11

1990-05-22

Schmidt, Frederick R.

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

B25B 1504

Patent

active

049267205

ABSTRACT:
A ratchet spanner includes a handle; an arcuate jaw-like head connected with the handle, the jaw-like head including a side wall defining a space therein, an upper wall, a lower wall, a plurality of first apertures in the upper wall and a plurality of second apertures in the lower wall in alignment with the first apertures; a plurality of pawls; a plurality of posts, each secured to a respective one of the pawls for pivotally mounting the respective pawl in a first aperture and second aperture in the jaw-like head adjacent the side wall; a ratchet insert member positioned with the space and rotatable with respect to the jaw-like head, the ratchet insert member including a plurality of teeth engageable by the pawls, and spaced gripping surfaces; and a sheet-like arcuate strip of sheet metal positioned against the side wall and a plurality of leaf spring members partially cut-out from the arcuate strip and biased into engagement with the pawls to pivot the pawls into engagement with the teeth.

REFERENCES:
patent: 302659 (1884-07-01), Hunter
patent: 763105 (1904-06-01), Morrison
patent: 2205769 (1940-06-01), Sweetland
patent: 2376575 (1945-05-01), Cronan
patent: 2456838 (1948-12-01), Peterson
patent: 2760394 (1956-08-01), Wragge
patent: 3444767 (1969-05-01), Cupler
patent: 3504579 (1970-04-01), Harlan
patent: 3572188 (1971-03-01), Christian
patent: 4466523 (1984-08-01), DeCarolis

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