US4214568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive unit for a distributor and a fuel pump
Assignee: Toyota Motor Corp
•
Filing: 1978-09-27
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Granted: 1980-07-29
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Expires: 1998-09-27
Abstract
Abstract A drive unit for driving both a distributor and a fuel pump, in which a driving gear which is in meshed engagement with a driven gear on a rotating shaft of a distributor is fixed on a drive shaft and formed integrally with a cam which engages an operating lever of a mechanical fuel pump, and a collar is force or press fitted on said cam.
Inventors
- 👤 Eiji Ito
- 👤 Shigeki Okaguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:39
CPC Classifications
F; F16; F16H; F16H57/00; F16H57/0018; F16H57/0025; F02; F02B; F02B67/00; F02B67/04; F02P; F02P7/00; F02P7/10; F16D; F16D1/00; F16D1/06; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2101
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
121 words
A drive unit for a distributor and a fuel pump of a spark ignition internal combustion engine, the unit including a drive gear integrally formed with an axially adjacent drive cam, the integral gear and cam unit being adapted to be mounted on a camshaft of the engine with the drive gear in meshing engagement with a driven gear on a distributor drive shaft and with the cam in sliding engagement with a fuel pump actuating lever, wherein the improvement comprises: said integral drive gear and cam unit being formed of easily machineable non-heat treated material, and said unit further comprising a fully heat treated collar interference fitted onto the drive cam to provide a wear resistant surface for said cam.
Claim 2
Dependent Claim
121 words
A drive unit for a distributor and a fuel pump of a spark ignition internal combustion engine, the unit including a drive gear integrally formed with an axially adjacent drive cam, the integral gear and cam unit being adapted to be mounted on a camshaft of the engine with the drive gear in meshing engagement with a driven gear on a distributor drive shaft and with the cam in sliding engagement with a fuel pump actuating lever, wherein the improvement comprises: said integral drive gear and cam unit being formed of easily machineable non-heat treated material, and said unit further comprising a fully heat treated collar interference fitted onto the drive cam to provide a wear resistant surface for said cam.
Claim 3
Dependent Claim
13 words
A drive unit according to claim 1 wherein the cam surface is circular.
Claim 4
Dependent Claim
20 words
A drive unit according to claim 1 wherein the collar is force fitted or press fitted onto the drive cam.
Claim 5
Dependent Claim
22 words
A drive unit according to claim 1 including means for securing the drive unit to a drive shaft by a threaded bolt.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-07-29 | 1984-01-28 | 1984-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-29 | 1988-01-28 | 1988-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-29 | 1992-01-28 | 1992-07-29 | $7700.00 | Window Closed / Lapsed |