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:
Jan. 26, 1988
Filed:
Nov. 19, 1981
Frederick S Dowell, Coventry, GB;
Massey-Ferguson Services N.V., Curacao, AN;
Abstract
A disc for use as a rotor (10) or stator (18) in a multiple-disc brake. The disc (10) has an annular peripheral band (15) provided with a series of circumferentially spaced through slots (12) which open through a periphery of the disc. Each slot is defined by edges (13, 13a) which extend away from the periphery across the annular peripheral band (15) and are inclined in opposite directions (.alpha.) to a given radius (14) of the disc extending therebetween so that the slot tapers in a radial sense. A multiple disc brake is also provided which has a housing (46, 47) containing oil or other coolant which encloses a disc stack in the form of interleaved sets of rotor (10) and stator (18) discs. One set of discs (10) has a series of circumferentially spaced generally radially extending through slots (12) with inclined edges (13, 13a) extending from one periphery of the stack and the other set of discs (18) has a series of circumferentially spaced generally radially extending coolant access cut-outs (26) extending from the other periphery of the stack. Portions of the slots (12) and cut-outs (26) are arranged to periodically overlap each other during relative rotation of the rotors and stators at locations outside the bands of frictional contact (15) of the rotors and stators to provide a radial flow path (31) for coolant across the stack. The disc and brake are applicable to a wide range of uses including agricultural and industrial tractors.