Screwdriver handle

Details Screwdriver handle Screwdriver handle

1986-11-20

1988-03-08

Schmidt, Frederick R.

Tools

Wrench, screwdriver, or driver therefor

Handle or shank

16110R, 81436, 81489, B25B 1300

Patent

active

047292717

ABSTRACT:
A screwdriver handle has helical grooves on the exterior, the threads of the helix being of a buttress type. The handle has a resilient external sleeve the interior of which fits into the helical grooves. When the user grips the sleeve and turns in normal fashion, the resiliency of the groove augments the turning action of the screwdriver blade. The sleeve may have a closed end fitting on top of the handle. The shank of the screwdriver below the handle may be enlarged, formed with circumferential grooves and provided with a resilient sleeve over the enlargement.

REFERENCES:
patent: 803161 (1905-10-01), Hastings
patent: 1774207 (1930-08-01), Meissner
patent: 1816359 (1931-07-01), Carlin
patent: 1839835 (1932-01-01), Cook
patent: 2985209 (1961-05-01), Novelo

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