Throttle valve opening sensor
US4715220A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1986 |
| Grant date | Dec 29, 1987 |
| Priority date | — |
| Expiry date | Nov 20, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01C10/34
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a throttle valve opening sensor including a substrate provided with a throttle valve opening detecting portion, a rotor adapted to be rotated in association with rotation of a throttle valve, a housing for rotatably supporting the rotor and incorporating the substrate, a packing mounted in the housing for sealing the substrate, and a contact mounted on the rotor and adapted to slide on the opening detecting portion; the improvement comprises a substrate pressing portion formed at the packing for inwardly pressing the substrate, an O-ring projecting portion formed at the packing on the outer peripheral side of the substrate pressing portion and tightly contacting with the housing, and a cover provided outside the packing for inwardly pressing the substrate pressing portion and the projecting portion of the packing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.