Patent US3865068A successfully refreshed from Google Patents.
US3865068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stern drive engine mount
Assignee: Brunswick Corp
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Filing: 1973-01-22
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Granted: 1975-02-11
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Expires: 1993-01-22
Abstract
Abstract A three point mounting system for the engine of a marine inboard-outboard stern drive unit. Bi-axially adjustable side mounts support the weight of the engine and an elastomeric sealing element around the drive shaft housing is radially expanded within a cylindrical passage through the transom to steady the engine in the region immediately adjacent the Ujoint.
Inventors
- 👤 William D Haasl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:58
CPC Classifications
B; B63; B63H; B63H21/00; B63H21/30; B63H21/305; B63H20/00; B63H20/02; B63H20/14; B63H20/22
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
195 words
In an inboard-outboard marine drive system including an engine, drive shaft assembly, transom plate assembly and outdrive unit, an improved engine mounting arrangement comprising: a cylindrical drive shaft housing attached to and extending aft of an engine and an aft engine mount assembly attached to and carried by said housing, said cylindrical housing having an annular step, said aft mount assembly including an annular elastomeric sealing and vibration absorbing element disposed around and upon said housing with one side abutting said step, and means movably attached to said housing and abutting the other side of said annular elastomeric element for axially compressing said element against said step and thereby radially expanding said element into radial compression between said housing and said transom plate assembly, said transom plate assembly including a transom plate having a cylindrical passage therein, said passage having an end opening to the engine side of said transom plate, said cylindrical passage being adapted to axially receive therein through said open end said entire aft mount assembly, so that said entire mount assembly may be thrust into said passage through said open end and secured at various selected positions within said cylindrical passage.
Claim 2
Dependent Claim
195 words
In an inboard-outboard marine drive system including an engine, drive shaft assembly, transom plate assembly and outdrive unit, an improved engine mounting arrangement comprising: a cylindrical drive shaft housing attached to and extending aft of an engine and an aft engine mount assembly attached to and carried by said housing, said cylindrical housing having an annular step, said aft mount assembly including an annular elastomeric sealing and vibration absorbing element disposed around and upon said housing with one side abutting said step, and means movably attached to said housing and abutting the other side of said annular elastomeric element for axially compressing said element against said step and thereby radially expanding said element into radial compression between said housing and said transom plate assembly, said transom plate assembly including a transom plate having a cylindrical passage therein, said passage having an end opening to the engine side of said transom plate, said cylindrical passage being adapted to axially receive therein through said open end said entire aft mount assembly, so that said entire mount assembly may be thrust into said passage through said open end and secured at various selected positions within said cylindrical passage.
Claim 3
Dependent Claim
62 words
The device of claim 1 wherein said step comprises an annular axially extending portion of said cylindrical housing having a reduced radius, and wherein said means for axially compressing said elastomeric element includes an annular member adapted to ride partially over said axial portion and means for urging said annular member against the after end of said housing and said elastomeric element.
Claim 4
Dependent Claim
44 words
The device of claim 2 wherein said transom plate member includes abutment means cooperating with said aft mount assembly for limiting the penetration of said housing and mount within said cylindrical passage and for axially positioning said engine for attachment to said outdrive unit.
Claim 5
Dependent Claim
33 words
The device of claim 3 further including bi-axially adjustable engine mounts attached at selected points on each side of the engine and adapted for attachment to the bottom hull structure of a boat.
Claim 6
Dependent Claim
60 words
The device of claim 2 further including a bearing for the system drive shaft assembly and means for mounting said bearing inside of said drive shaft housing, including annular abutment means inside said cylindrical housing adapted to seat one side of said bearing and wherein said annular compressing member comprises a movable seat for the other side of said bearing.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |