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:
Oct. 28, 1997
Filed:
Sep. 27, 1995
Steven C Bray, Washington, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
An apparatus for controlling a clutch or brake in an application with variable torque requirements. Control logic momentarily sets the control signal to an initial level to allow adequate time to engage the clutch or brake, and then changes the control signal at an acceptable rate until reaching the required torque level. The initial level is varied based upon the required torque, such that at low levels of required torque, a signal with low initial torque (although possibly higher than the required torque), is used to achieve smoother engagement at some sacrifice in response, and at higher levels of required torque, a signal with higher initial torque is used to improve response.