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Combination Water Pump and Belt Tensioner

United States Patent

Webb

Patent Number:    4,822,321

Date of Patent:    Apr. 18, 1989

COMBINATION WATER PUMP AND BELT TENSIONER
Inventor: Donald L. Webb, Romeo, Mich.
Assignee: General Motors Corporation, Detroit, Mich.
Appl. No.: 220,286
Filed: Jul. 18, 1998
Int. Class: F16H 7/14
U.S. Class: 474/117; 474/135; 362/345
Field of Search: 474/112, 117, 118, 133, 147/135, 110, 101, 113, 123/41.44, 198 C; 418/270

References Cited

U.S. PATENT DOCUMENTS
2894051 July 1959 Gassman 474/117 X
2953241 September 1960 Lehman 474/113 X
3110190 November 1963 Belting et al. 474/117
4283182 August 1981 Kraft 474/110
4583961 April 1986 Kawasawa et al. 474/113

Primary Examiner- Stephen J. Novosad
Attorney, Agent, or Firm- Patrick M. Griffin

Abstract

A combined water pump and belt tensioner includes an arm pivoted to the outside of the water pump housing so as to swing about the axis of the pump shaft. Loads on the arm are transmitted to the pump housing, but not to the pump shaft. A pulley on the arm both tensions the belt and powers the pump shaft through a small drive belt that compensates for the swinging of the arm.

3 Claims, 3 Drawing Sheets

Combination Water Pump and Belt Tensioner patent image

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