Patent US3981165A successfully refreshed from Google Patents.
US3981165A
Expired / Lapsed
US
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Outboard motor propeller lock system
Assignee: Individual
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Filing: 1976-03-17
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Granted: 1976-09-21
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Expires: 1996-03-17
Abstract
Abstract A propeller lock system comprised of an inner fin lock and an outer fin lock, with the outer fin lock adapted to lock to the inner fin lock to prevent removal from its locking position on a propeller housing.
Inventors
- 👤 Merol O. Wersinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:55
CPC Classifications
B; B63; B63H; B63H23/00; B63H23/32; B63H23/34; B63H1/00; B63H1/02; B63H1/12; B63H1/14; B63H1/20; E; E05; E05B; E05B73/00; E05B73/007; E05B73/0076; F; F02; F02B; F02B61/00; F02B61/04; F02B61/045; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5611; Y10T70/5615; Y10T70/5619; Y10T70/5624; Y10T70/5628; Y10T70/5854; Y10T70/5867
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
165 words
A propeller lock system to be used in combination with a boat motor which has a propeller shaft housing and a concentrically positioned spaced apart outer propeller housing with a plurality of lugs radially extending from said propeller shaft housing to said propeller housing, said lock system comprising; an inner fin lock adapted for positioning between said propeller shaft housing and said propeller housing, having a top cover portion and a lower lug gripping edge, an outer fin lock also adapted to position between said propeller shaft housing and said propeller housing, said outer fin lock having a top cover portion and an elongated body portion, said elongated body portion being of sufficient width to nearly completely fill the annular space between two of said lugs, and means to lock said inner and outer fin locks together whereby free rotation of said inner fin lock to a position where it can be removed without its inner gripping edge engaging one of said lugs, is prevented.
Claim 2
Dependent Claim
165 words
A propeller lock system to be used in combination with a boat motor which has a propeller shaft housing and a concentrically positioned spaced apart outer propeller housing with a plurality of lugs radially extending from said propeller shaft housing to said propeller housing, said lock system comprising; an inner fin lock adapted for positioning between said propeller shaft housing and said propeller housing, having a top cover portion and a lower lug gripping edge, an outer fin lock also adapted to position between said propeller shaft housing and said propeller housing, said outer fin lock having a top cover portion and an elongated body portion, said elongated body portion being of sufficient width to nearly completely fill the annular space between two of said lugs, and means to lock said inner and outer fin locks together whereby free rotation of said inner fin lock to a position where it can be removed without its inner gripping edge engaging one of said lugs, is prevented.
Claim 3
Dependent Claim
35 words
The propeller lock system of claim 1 wherein said inner fin lock is comprised of an arcuate shaped elongated body member with a cutout adjacent its lower portion to define said lower lug gripping edge.
Claim 4
Dependent Claim
40 words
The propeller lock system of claim 1 wherein said elongated body portion of said outer fin lock is arcuately shaped so that it may be concentrically positioned in the annular space between said propeller shaft housing and said propeller housing.
Claim 5
Dependent Claim
43 words
The propeller lock system of claim 2 wherein the top cover portion of said inner fin lock and the top cover portion of said outer fin lock are of identical dimensions such that a portion of each may be adjacently and matingly positioned.
Claim 6
Dependent Claim
21 words
The device of claim 4 wherein said propeller lock system is made of from about 14 to about 16 guage steel.
Claim 7
Dependent Claim
41 words
The device of claim 4 wherein the top cover portions of said inner fin lock and said outer fin lock when adjacently and matingly positioned cover the entire access area, defined by the propeller housing, for access to the interior thereof.
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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) | 1979-09-21 | 1980-03-22 | 1980-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-21 | 1984-03-22 | 1984-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-21 | 1988-03-22 | 1988-09-21 | $7700.00 | Window Closed / Lapsed |