(19)Fresh off Patent
(45) Week of Oct 5, 2026 No. 5 3,852 lapsed 197 listed
Tools & Hardware · expired at full term Oct 8, 2026

Variable Torque-Limiting Driver

Sheet 1 of the patent drawingsSheet 2 of the patent drawingsSheet 3 of the patent drawings

(57) Abstract

An adjustable, torque-limiting driver for a tool having a radially extending handle that houses a cam member and a pair of plungers. The plungers are biased against the housing and provide variable resistance for the cam member. The arrangement of the cam member and the plungers reduces the wear on the various parts of the driver and extends the life of the driver.

Full write-up available with Pro

Pro includes, for every patent on each weekly list: a written summary, the scope of the claims, materials and manufacturing route, a demand check with current listings and prices, and related-patent warnings.

View plans   Sign in