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:
Jan. 20, 2004
Filed:
Jan. 28, 2003
William Eugene Sherman, II, South Bend, IN (US);
Robert Bosch Corporation, Broadview, IL (US);
Abstract
An actuator mechanism in a drum-in-hat park brake having a housing with a first end that engages a first web of a first brake shoe and a second end that engages a second web of a second brake shoe. A lever pivotally retained in the housing has a first end that engages the first web and a second end with a hook thereon for receiving a loop end of a linkage connected to an input member. On receipt of an input force the lever pivots and exert an actuation force on the first and second webs to correspondingly moves first and second friction members associated with the first and second brake shoes into engagement with a drum to effect a brake application. The actuator mechanism is characterized in that the lever has a projection located between the hook and the first end, a notch that is perpendicular to a longitudinal axis of the lever and located on an edge of the projection, and a detent in a surface of the hook and by a clip member having a first portion initially located in the notch and a second portion initially located in the detent. An initial input force applied by the loop brings the loop end into engagement with the second portion and moves a lip on the second portion out of the detent and along the slot while the first portion correspondingly moves out of the notch such that when the loop end reaches the bottom of the throat of the hook, the lip snaps into the hole and a third portion of the clip is aligned with a tip of the hook to retain the loop end in the hook.