US4061448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive for the ignition distributor of an internal combustion engine
Assignee: Ford Motor Co
•
Filing: 1976-11-08
•
Granted: 1977-12-06
•
Expires: 1996-11-08
Abstract
Abstract An improved drive for the ignition distributor of an internal combustion engine of the type having a lubrication pump driven by its crankshaft. The pump has an internal gear driven by and coaxial with the crankshaft. An external gear has internal teeth and is driven, in planetary gear fashion, by the internal gear. A distributor shaft is rotatably mounted in the pump housing and has a helical tooth pinion gear that meshes with helical teeth on the external periphery of the external pump gear. Thus, the driven external gear drives the pinion gear and the distributor shaft. Preferably, the transmission ratio is 1 to 1.25 between the internal and external gears and 1 to 1.6 between the external and pinion gears, providing an overall ratio of 1 to 2 between crankshaft and distributor shaft.
Inventors
- 👤 Hans-Ullrich Gondeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:17
CPC Classifications
F; F02; F02P; F02P7/00; F02P7/10; H; H01; H01R; H01R39/00; H01R39/60
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
177 words
An improved drive for the ignition distributor of an internal combustion engine of the type having a crankshaft and a lubrication pump driven by said crankshaft, said lubrication pump including a housing, an external gear having internal teeth and an internal gear having external teeth meshing, in planetary gear fashion, with the internal teeth of said external gear, said internal and external gears being located in said housing, said internal gear driving said external gear and being coaxial with, and rotatably driven by, said crankshaft, wherein the improvement comprises: a distributor shaft rotatably journalled in said housing of said lubrication pump; and a pinion gear having helical teeth, said pinion gear being attached to said distributor shaft for causing rotation thereof, said external gear of said lubrication pump having external helical teeth meshing with said helical teeth of said pinion gear, said crankshaft when rotating driving said internal gear of said lubrication pump, said internal gear of said lubrication pump driving said external gear thereof, and said external gear driving said pinion gear and said distributor shaft.
Claim 2
Dependent Claim
177 words
An improved drive for the ignition distributor of an internal combustion engine of the type having a crankshaft and a lubrication pump driven by said crankshaft, said lubrication pump including a housing, an external gear having internal teeth and an internal gear having external teeth meshing, in planetary gear fashion, with the internal teeth of said external gear, said internal and external gears being located in said housing, said internal gear driving said external gear and being coaxial with, and rotatably driven by, said crankshaft, wherein the improvement comprises: a distributor shaft rotatably journalled in said housing of said lubrication pump; and a pinion gear having helical teeth, said pinion gear being attached to said distributor shaft for causing rotation thereof, said external gear of said lubrication pump having external helical teeth meshing with said helical teeth of said pinion gear, said crankshaft when rotating driving said internal gear of said lubrication pump, said internal gear of said lubrication pump driving said external gear thereof, and said external gear driving said pinion gear and said distributor shaft.
Claim 3
Dependent Claim
44 words
An improved drive according to claim 1 wherein the transmission ratio from said internal gear to said external gear of said lubrication pump is 1 to 1.25 and wherein the transmission ratio from said external gear to said pinion gear is 1 to 1.6.
Claim 4
Dependent Claim
23 words
An improved drive according to claim 1 wherein said distributor shaft carries an eccentric suitable for operating a fuel pump for said engine.
Claim 5
Dependent Claim
23 words
An improved drive according to claim 2 wherein said distributor shaft carries an eccentric suitable for operating a fuel pump for said engine.
References Cited (Backward Citations)
US3367239A
Cited
US3662726A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-05 | 1981-06-06 | 1981-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-05 | 1985-06-06 | 1985-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-05 | 1989-06-06 | 1989-12-06 | $7700.00 | Window Closed / Lapsed |