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:
Jul. 01, 1986
Filed:
Sep. 11, 1984
Applicant:
Inventors:
David O Crane, Twycross, Leicester, GB;
Thomas McDonald, West Bridgford, Nottingham, GB;
Ronald F Horner, Stoke Golding, Nuneaton, GB;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01L / ; B25B / ;
U.S. Cl.
CPC ...
7386233 ; 7386223 ;
Abstract
A torque transducing attachment (2) can be fastened to a air-driven impact tool (8) at its rear end. A shaft (20) in bearings (16) in a housing (12) has a torque transformable part (22) with integral bushes (24, 26) with apertures (29) on either side. The relative displacement under torque of the apertures (29) varies the amount of light transmitted from a stabilized LED source (36) to a photo detector (46) and the resulting signal is passed through frequency responsive network.