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. 07, 1992
Filed:
Jan. 14, 1991
James E Johnston, Geneseo, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
This invention relates to systems for locking a brake in a brake actuated position. The invention is similar to other such systems in that the system comprises a brake, a pedal lever having a ratcheted edge and being connected via a linkage to the brake, a locking member such as a pawl with a tooth for engaging the ratcheted edge of the pedal lever in a brake actuated position, and a locking lever connected to the pawl for displacing the pawl between a first position at which the pawl is remote from the ratcheted edge of the pedal lever and a second position at which the pawl interfaces with the ratcheted edge of the pedal lever, the locking lever being hand manipulated by a handle connected to the locking lever via a linkage. However, this invention is an improvement over such other systems in that an elastic member is connected between the pawl and the locking lever so that when the locking lever is moved from its first position to its second position, and any frictional forces between the pawl and ratcheted edge are relieved, the pawl will return automatically to its disengaged position.