Vacuum reducer valve assembly
US3982553A · kind A · utility
9Cited by
3References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 28, 1975 |
| Grant date | Sep 28, 1976 |
| Priority date | — |
| Expiry date | Nov 28, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2546
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A vacuum reducer valve assembly senses the engine induction passage vacuum and delivers a reduced vacuum signal to a vacuum motor which advances the ignition timing in proportion to the vacuum signal. The vacuum reducer valve assembly has a member which decreases the difference between the induction passage vacuum and the reduced vacuum signal as atmospheric pressure decreases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.