Screwdrivers

Details Screwdrivers Screwdrivers

1979-11-15

1982-02-09

Kunin, Stephen G.

Tools

Wrench, screwdriver, or driver therefor

Having work engaging and force exerting portion inserted...

81436, 81438, B25B 1500

Patent

active

043144896

ABSTRACT:
A screwdriver and screw adapted so that at least one of them has a bore extending into it for receiving a pin held by the other so that in use the pin engages in the bore to hold the screwdriver and screw against lateral movement relative to one another.

REFERENCES:
patent: 1069312 (1913-08-01), Zwiebel
patent: 2804894 (1957-09-01), Rosenburg
patent: 2936010 (1960-05-01), Ansingh
patent: 3289290 (1966-12-01), Sandor
patent: 3424212 (1969-01-01), Kemper
patent: 3891017 (1975-06-01), Iskra

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