Pneumatic booster
US4632014A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 17, 1985 |
| Grant date | Dec 30, 1986 |
| Priority date | — |
| Expiry date | Apr 17, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/5675
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A pneumatic booster of the type including a power piston partitioning the interior of a casing into a front chamber and a rear chamber, a reinforcing rod connected to the casing and extending through the front chamber, the power piston and the rear chamber, and a poppet valve for introducing atmospheric air into the rear chamber and actuated by an input shaft which is slidably mounted on the power piston and extends rearwards out of the casing. A passage is formed in the reinforcing rod with one end communicating permanently with a space into which atmospheric air is introduced through the poppet valve when it is actuated, a cut-off valve is provided for communicating or cutting off the passage in the reinforcing rod, and an air introducing device for introducing atmospheric air into the rear chamber is provided independently of the poppet valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.