Patent · US Expired

Electromotor/pump assembly

US6200109A · kind A · utility

2Cited by
18References
16Claims
0Family size

Assignee

Inventors

Key dates

Filing dateDec 17, 1999
Grant dateMar 13, 2001
Priority date
Expiry dateDec 17, 2019

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH02K7/14
  • WIPO fieldEngines, pumps, turbines
  • WIPO sectorMechanical engineering

Abstract

The present invention discloses an electric-motor-and-pump assembly including an electric motor, and the pump-sided end of the motor shaft (3) extends through a housing lid (10), is supported with at least one roller bearing (13) on a pump housing (2), and its purpose is to drive pump pistons (17, 18). The housing lid (10) includes a bore in the area of a shaft passage (9) which leaves open a gap (11) to the motor shaft (3). The gap (11) connects a pump-sided crank chamber (14) to an inside space (19) of the motor. The assembly includes a sealing element (20) which shuts off the gap (11).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.