Hydraulic linkage
US3945209A · kind A · utility
Inventor
Key dates
| Filing date | Oct 4, 1974 |
| Grant date | Mar 23, 1976 |
| Priority date | — |
| Expiry date | Oct 4, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/778
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic linkagae for transmitting reciprocating motion comprising a master unit, a slave unit, the master and slave units each comprising a pair of interconnected rod pistons reciprocally moveable within the cylinders in opposite directions by a force applied to the pistons, hydraulic lines connecting one master cylinder to one slave cylinder for transmitting motion from master to slave, a reservoir, a pair of one-way pressure valves mounted in opposite directions and in parallel between the reservoir and each master-slave connection so that volumetric increases in the fluid in the system will be forced out through a first valve of each valve pair and to the reservoir, and volumetric decreases in the fluid in the system will draw fluid from the reservoir through a second valve of each valve pair, thereby providing volume change compensation. A two-way pressure valve comprising a housing having a pair of openings connected by a bore for passage of fluid therethrough, a pair of plungers located within the bore and biased against each other so that the first plunger is seated against the housing and the second plunger is seated against a hole in the end of the first plunger, each …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.