Patent · US Expired

Direct drive dual drum winch

US4432532A · kind A · utility

5Cited by
8References
4Claims
0Family size

Inventor

Key dates

Filing dateJan 27, 1983
Grant dateFeb 21, 1984
Priority date—
Expiry dateJan 27, 2003

Classification

  • Technology area (CPC F)Mechanical Engineering; Lighting; Heating
  • CPC primaryF16B2200/50
  • WIPO fieldHandling
  • WIPO sectorMechanical engineering

Abstract

For use in service and maintenance of oil and gas (or water) wells, a truck mounted line and cable winch. A winch has dual drums each of which is independently driven by a direct coupled radial piston hydraulic motor. An improved flexible coupling connects aligned motor and drum shafts.

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