Hydraulic loading shovels
US4526085A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 1982 |
| Grant date | Jul 2, 1985 |
| Priority date | — |
| Expiry date | Aug 13, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B11/20
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention relates to a device for controlling two fluid-controlled drive members, one of which is double-acting, wherein a communication conduit connects the supply conduits of said double-acting drive member, a non-return valve being disposed in said communication conduit and allowing the passage of the fluid solely from the small chamber towards the large chamber of said double-acting drive member, while another conduit is adapted to connect the large chamber of the double-acting drive member to the chamber of the second drive member. The result of the invention is the elimination of lift of a hydraulic loading shovel when digging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.