Patent · US Active

Auxiliary pumping unit

US10246302B2 · kind B2 · utility

0Cited by

3References

17Claims

0Family size

Assignee

thyssenkrupp Elevator Corporation · US

Inventors

Anthony Frank Hamlett · Bartlett, US
Roy Walker · Atlanta, US
Gary Hooper · Rathdrum, US

Key dates

Filing date	Jun 16, 2014
Grant date	Apr 2, 2019
Priority date	—
Expiry date	Dec 30, 2036

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF15B2211/8757
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A pumping unit for use with a hydraulic elevator system includes a reservoir storing fluid, a first pump, and a second pump. The first pump is coupled with the reservoir and the elevator system to communicate fluid between the reservoir and the elevator system to actuate the elevator system. The second pump is also coupled with the reservoir and the elevator system to communicate fluid between the reservoir and the elevator system to actuate the elevator system. The second pump is selectively actuatable when the first pump is inactivated.

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