US3612016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve spring retainer
Assignee: Individual
•
Filing: 1970-07-13
•
Granted: 1971-10-12
•
Expires: 1990-07-13
Abstract
Abstract A formed valve spring retainer means is provided which includes an annular ring extending inwardly into a plurality of formed resilient locking means particularly adapted to securely engage an annular groove located proximate to the distal end of a valve stem. The outward portion of the annular ring extends into a downwardly disposed dependent flange portion whereby the under surfaces of the retainer means is particularly adapted to maintain a valve spring in compression and concentric about the valve stem during the operative cycle of an internal combustion engine.
Inventors
- 👤 William J Jelen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:56
CPC Classifications
F; F01; F01L; F01L3/00; F01L3/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
141 words
A valve spring retainer means adapted to lock within an annular groove provided in a valve stem, comprising: a formed ring having an annular ring portion extending into an outwardly disposed and downwardly dependent flange portion for engaging a valve spring; a plurality of formed locking means extending inwardly from said annular ring portion; said locking means having terminating inwardly extending end portions defining a central aperture adapted to engage a valve stem; said locking means including a formed annular indentation spaced between said terminal end portions and said annular ring portion; said terminal end portions angled upwardly of said formed annular indentation; said locking means separated by a plurality of spaced openings circumferentially located between said annular ring portion and said central aperture whereby each locking means is adapted to separate slightly and engage a valve stem upon mounting therewith.
Claim 2
Dependent Claim
141 words
A valve spring retainer means adapted to lock within an annular groove provided in a valve stem, comprising: a formed ring having an annular ring portion extending into an outwardly disposed and downwardly dependent flange portion for engaging a valve spring; a plurality of formed locking means extending inwardly from said annular ring portion; said locking means having terminating inwardly extending end portions defining a central aperture adapted to engage a valve stem; said locking means including a formed annular indentation spaced between said terminal end portions and said annular ring portion; said terminal end portions angled upwardly of said formed annular indentation; said locking means separated by a plurality of spaced openings circumferentially located between said annular ring portion and said central aperture whereby each locking means is adapted to separate slightly and engage a valve stem upon mounting therewith.
Claim 3
Dependent Claim
45 words
The valve spring retainer of claim 1 wherein the inwardly extending formed locking means includes downwardly angled extending portions located between said annular ring portion and said annular indentation whereby the annular indentation is located in a horizontal plane disposed below the annular ring portion.
Claim 4
Dependent Claim
34 words
The valve spring retainer of claim 1 wherein the circumferential width of each said inwardly disposed formed locking means is greater at the annular indentation than the circumferential width of each terminal end portion.
Claim 5
Dependent Claim
26 words
The valve spring retainer means of claim 1 wherein said terminating end portions have circumferentially rounded engaging surfaces particularly adapted to engage a round valve stem.
Claim 6
Dependent Claim
29 words
The valve spring retainer means of claim 1 wherein the circumferentially spaced openings between said locking means are predominately located between said annular indentation and said annular ring portion.
Claim 7
Dependent Claim
16 words
The valve spring retainer means of claim 1 wherein said locking means comprise three spaced members.
Claim 8
Dependent Claim
28 words
The valve spring retainer means of claim 1 wherein said locking means comprises three spaced web members having the terminal end portions thereof radially adjacent to each other.
References Cited (Backward Citations)
US1327539A
Cited
US1448221A
Cited
US1453471A
Cited
US1554227A
Cited
US1775069A
Cited
US2844134A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |