ALFREDO E ZATORRE
Engineering in Salem, MA
License number
Massachusetts 23711
Expiration Date
Jun 30, 1990
Type
Industrial Engineer
Address
Address
Salem, MA 01970
Professional information
Fastener And Driving Tool
US Patent:
4339971, Jul 20, 1982
Filed:
Jan 28, 1980
Appl. No.:
6/115956
Inventors:
Alfredo E. Zatorre - Salem MA
International Classification:
B25B 1502, B25B 2308
US Classification:
81436
Abstract:
A driving tool and fastener, in the driving end of which is provided a nick or slot for insertion of the driving tool for driving the fastener, are provided which, because of their particular, respective cross-sectional configurations, can be interlocked temporarily together. As this interlocking engagement prevents the driving tool from accidentally slipping from the nick in the driving end of the fastener, rotational movement of the fastener is greatly facilitated. The shank of the driving tool is provided at its operative end with a bit that, because of its cross-sectional configuration compared to that of the nick, wedges with the nick. Thus, not only is slipping between the driving tool and fastener prevented when rotating the fastener, but accidental separation of the driving tool from the fastener is prevented, making the task considerably easier when using the fastener in overhead work or in a hard to reach location.