The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 01, 1976
Filed:
Oct. 09, 1974
Applicant:
Inventor:
Merlin R Dummer, Arab, AL (US);
Assignee:
Cutler-Hammer, Inc., Milwaukee, WI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
200157 ; 2001 / ;
Abstract
A trigger switch for a portable electric tool providing substantial pretravel of the trigger before closing force is applied to the contacts. This is a safety measure to prevent the motor from starting if the trigger should be accidentally pressed in handling a circular saw or the like. The pretravel is provided by a telescopic joint between the trigger and contact carrier, each of which is biased independently by a return spring to insure immediate reopening of the contacts upon release of the trigger.