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:
Dec. 19, 2000
Filed:
Sep. 29, 1998
Kevin L Maurice, Bristol, CT (US);
Inertia Dynamics, Inc., Collinsville, CT (US);
Abstract
An electromagnetic brake includes an improved friction disk that has at least one friction surface formed entirely from a rubber material such as a styrene butadiene rubber material. The rubber material 1) has a high coefficient of friction, 2) conforms to the shape of the mating braking surfaces, 3) is dimensionally stable so as not to unnecessarily widen the air gap of the brake when the brake is applied, and 4) exhibits acceptable wear characteristics. The rubber material also preferably does not exhibit a sharp reduction in coefficient of static friction when it is heated, e.g., due to friction from its mating surfaces and/or due to heat transfer from the electric motor or other braked element. The resultant brake is relatively light-weight, compact, and inexpensive. It is particularly well-suited for use as a static, park-and-hold brake for an electric motor or the like.