Patent EP0002615A2 successfully refreshed from Google Patents.
US3734073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable camshaft sprocket wheel
Assignee: Individual
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Filing: 1971-06-01
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Granted: 1973-05-22
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Expires: 1991-06-01
Abstract
Abstract A timing sprocket for a camshaft is provided with a number of positioning holes equally spaced in a circle about its axis of rotation. A vernier plate connected to the camshaft is provided with alignment holes equally spaced in a corresponding circle as the circle of positioning holes but at a slightly greater or lesser angle. Alignment of a positioning hole and an alignment hole using a positioning pin permits incremental rotational adjustment of the sprocket wheel relative to the camshaft for angular increments equal to the difference between the angles of the positioning holes and the angles of the alignment holes.
Inventors
- 👤 R Walter
- 👤 E Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:32
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/12; F01; F01L; F01L1/00; F01L1/02; F01L1/022; F01L1/026; F01L2303/00; F01L2303/02; F02; F02B; F02B2275/00; F02B2275/08; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/1956
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
89 words
An adjustable timing sprocket wheel for a camshaft comprising a vernier plate index alignment pin, a sprocket wheel having a plurality of means defining positioning holes in said wheel adapted to receive said alignment pin, a vernier plate having a plurality of means defining alignment holes also adapted to receive said alignment pin and corresponding to said positioning holes in said sprocket wheel for incremental rotational adjustment of said sprocket wheel relative to said camshaft, and means for connecting said vernier plate and said sprocket wheel to said camshaft.
Claim 2
Dependent Claim
89 words
An adjustable timing sprocket wheel for a camshaft comprising a vernier plate index alignment pin, a sprocket wheel having a plurality of means defining positioning holes in said wheel adapted to receive said alignment pin, a vernier plate having a plurality of means defining alignment holes also adapted to receive said alignment pin and corresponding to said positioning holes in said sprocket wheel for incremental rotational adjustment of said sprocket wheel relative to said camshaft, and means for connecting said vernier plate and said sprocket wheel to said camshaft.
Claim 3
Dependent Claim
47 words
The adjustable timing sprocket as claimed in claim 1 wherein said positioning holes generally define a circle about the axis of rotation of said sprocket wheel, and each of said alignment holes is spaced an incremental difference in angle greater than the spacing of said positionIng holes.
Claim 4
Dependent Claim
47 words
The adjustable timing sprocket as claimed in claim 1 wherein said positioning holes generally define a circle about the axis of rotation of said sprocket wheel, and each of said alignment holes is spaced an incremental difference in angle lesser than the spacing of said positioning holes.
Claim 5
Dependent Claim
73 words
The adjustable timing sprocket as claimed in claim 1 wherein said camshaft further comprises a camshaft reference dowel pin, said vernier plate further comprises means for engaging said dowel pin with said plate, and said sprocket wheel further comprises means for permitting said dowel pin to pass through said sprocket wheel and permit rotation of said sprocket wheel about the axis of rotation of said wheel and camshaft relative to said vernier plate.
Claim 6
Dependent Claim
75 words
The adjustable timing sprocket wheel as claimed in claim 1 wherein said means for connecting said vernier plate and said sprocket wheel to said camshaft comprises means defining a set of bolt holes in said vernier plate, means defining a set of slots in said sprocket wheel corresponding to said bolt holes in said vernier plate, a set of bolts passing through said holes and slots, and means for connecting said bolts to said camshaft.
Claim 7
Dependent Claim
26 words
The adjustable timing sprocket as claimed in claim 5 wherein said slots are curved to permit rotation of said sprocket wheel about its axis of rotation.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |