Fastener driving tool

Details Fastener driving tool Fastener driving tool

2006-05-16

2006-05-16

Wilson, Lee D. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Rigid jaws

C081S052000, C081S120000, C081S124200, C081S124300, C081S124600, C081S124700, C081S125000

Reexamination Certificate

active

07044031

ABSTRACT:
The present invention is directed to an improved tool for driving a threaded fastener, such as a hex-headed sheet metal screw. The driving socket is adapted with an counter-bore in the region of the face of driving end of the socket, sufficient to receive therein the shoulder on the fastener head. In the preferred embodiment the counter-bore is countersunk into the face of the socket, coaxially with the driving recess, and terminates in a boss which receives the shoulder of the fastener when placed in the socket for driving. An alternative embodiment of the invention includes an counter-bore in the driving end of the socket wherein the bore is a conical section, the major diameter of which is larger enough to receive the shoulder of the fastener head while being of limited depth so as to enable the majority of the fastener head to engage the driving sides of the hexagonal socket.

REFERENCES:
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patent: 6138538 (2000-10-01), Neijndorff
patent: 6269716 (2001-08-01), Amis
patent: 6290499 (2001-09-01), Lazzara et al.
patent: 6626627 (2003-09-01), Oesterle et al.
patent: 6715384 (2004-04-01), Kozak

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