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:
May. 01, 1990
Filed:
Feb. 18, 1988
Gordon M Sommer, Boca Raton, FL (US);
Sommer Company, Warren, MI (US);
Abstract
A motor brake unit comprising a housing member defining a fluid chamber disposed about the motor shaft of a motor, a shaft sleeve disposed within the fluid chamber nestingly engaging the motor shaft for rotation therewith, a first plurality of brake elements rotatable with the shaft sleeve, a brake collar secured to the housing member and disposed annularly about said shaft sleeve, a second plurality of brake elements non-rotatably supported by the brake collar, a pole piece for selectively engaging and disengaging the brake elements, biasing means for normally biasing the pole piece to engage the brake elements, and a plurality of electromagnetic coils for selectively attracting the pole piece axially opposite the biasing force to disengage the brake elements.