Hydraulic control system for a street sweeper
US4343060A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1980 |
| Grant date | Aug 10, 1982 |
| Priority date | — |
| Expiry date | Jul 18, 2000 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01H1/047
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A street sweeper having a frame with a cab carried thereon. An engine is mounted on the frame for powering the sweeper. A series of operating mechanisms are supported on the frame for assisting in a sweepings pick-up operation. A series of hydraulic motors are provided with each being operatively associated with one of the mechanisms for operating the same. A single variable and reversible flow piston pump is operatively connected to the hydraulic motors and the hydraulic mechanisms for operating them at a constant speed. The engine operates the piston pump with a variable speed input. A control mechanism is mounted in the cab, and electrical circuit means is connected between the control mechanism and the piston pump and cooperable with said control mechanism enabling for selective operation of the mechanisms at selective rotational speeds for assisting in a sweepings pick-up operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.