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:
May. 02, 1978
Filed:
Apr. 15, 1977
Franklin O Koch, Jr, Edelstein, IL (US);
Caterpillar Tractor Co., Peoria, IL (US);
Abstract
An improvement in a drive transmission for coupling an engine to a driven load at any selected one of a plurality of drive ratios which comprises a gear section having an input shaft, an output shaft, a plurality of gears and shift devices for interconnecting said gears in any of a plurality of predetermined relationships, a fluid pressure operated input clutch for coupling said gear section input shaft to said engine having an engaged position and a disengaged position, a fluid perssure operated output clutch for coupling said driven load and said gear section output shaft having an engaged position and a disengaged position and an automatic operating control for selectively applying fluid pressure to said output clutch. The improvement comprises an overspeed inhibitor coupled to the control and the output clutch for overriding the control by changing the pressure of fluid applied to the output clutch and apparatus responsive to the input shaft rotating above a predetermined or preselected rate for causing the overspeed inhibitor to override the control.