Loop flushing circuit
US6430923B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 18, 2000 |
| Grant date | Aug 13, 2002 |
| Priority date | — |
| Expiry date | Aug 18, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H61/4104
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A loop flushing circuit includes a loop flushing valve that is connected to the low pressure system line in a hydrostatic transmission for selectively bleeding fluid therefrom to the case drain without relying on a shuttle valve to identify the low pressure line. The loop flushing valve is adaptable to electrical or electro-hydraulic actuation by a microcontroller. Thus, the timing of loop flushing can be controlled based upon various system operating conditions or input values. Loop flushing with this circuit avoids adversely impacting control characteristics of the transmission, can be defeated around neutral, and can provide single-sided loop flushing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.