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. 23, 1991
Filed:
Feb. 08, 1990
Applicant:
Inventor:
Glenn S Metzelfeld, Brookfield, WI (US);
Assignee:
Hayes Industrial Brake, Inc., Mequon, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D / ; B60T / ;
U.S. Cl.
CPC ...
188170 ; 9213 / ; 303-976 ;
Abstract
An apparatus for actuating an emergency brake on loss of fluid pressure in a brake system, the apparatus including a housing for one or more compression springs, a piston and cylinder assembly mounted in the housing and being operatively connected to the fluid system and to the emergency brake to release the brake on sensing brake system fluid pressure and to apply the brake on loss of system pressure in the brake system, the spring or springs being permanently housed in the housing in a precompressed condition so that the piston and cylinder assembly can be removed from the housing without releasing the springs.