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. 11, 1994
Filed:
Jun. 26, 1992
Applicant:
Inventors:
William C Pierce, Muskegon, MI (US);
William J Hicks, Muskegon, MI (US);
Assignee:
Nai Anchorlok, Inc., Muskegon, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16D / ;
U.S. Cl.
CPC ...
92 63 ; 92 48 ; 92 9 / ; 188170 ;
Abstract
An air-operated combination diaphragm spring brake has a tamper-resistant seal provided between a head (46) and a spring side of a flange case (18) which together form a spring chamber (16) housing a power spring (72). The head (46) has an annular rim (70), and the flange case has an annular flange (74) with a diaphragm (48) sandwiched therebetween. An annular lip (76) on annular rim (70) extends over the annular flange (74). A snap ring (82) is engaged by opposing annular grooves (80), (78) on the outside of the annular flange (74) and inside of the annular lip (76), respectively, to form the tamper-resistant seal.