Patent US3612016A successfully refreshed from Google Patents.
US3612016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve spring retainer
Assignee: Individual
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Filing: 1970-07-13
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Granted: 1971-10-12
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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 07:12
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
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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 |