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:
Aug. 22, 2006
Filed:
Mar. 21, 2003
Staffan Brandt, Wauconda, IL (US);
Howard Sommerfeld, Oak Forest, IL (US);
Scott Natschke, Kankakee, IL (US);
Wajih Kanjo, Lockport, IL (US);
Staffan Brandt, Wauconda, IL (US);
Howard Sommerfeld, Oak Forest, IL (US);
Scott Natschke, Kankakee, IL (US);
Wajih Kanjo, Lockport, IL (US);
WABTEC Holding Corp., Wilmerding, PA (US);
Abstract
The present invention discloses a hand brake mechanism having a gravity based release hold mechanism with a visual indicator to prevent unwanted application of the railcar brakes and indicate such release hold condition. The release hold mechanism comprises a gravity based member pivotally linked to a release shaft preventing reverse rotation of the release shaft causing an unintended take-up of the chain. A detent retaining device disposed within the railcar hand brake housing further provides improve reliability of the operation. The gravity based member incorporates an indicator portion having a reflective coating to indicate such release hold position of the railcar hand brake.