US3613631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Outboard motor isolation system
Assignee: Outboard Marine Corp
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Filing: 1969-09-04
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Granted: 1971-10-19
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Expires: 1989-09-04
Abstract
Abstract Disclosed herein is a sound and vibration isolation mounting arrangement for an outboard motor having a marine propulsion unit mounted rearwardly of the steering axis of the outboard motor and including a power head, and a lower unit including a drive shaft housing and a gear case. The torque roll axis of the propulsion unit extends approximately vertically through the power head, drive shaft housing and lower unit gear case. The mounting arrangement includes an upper resilient mount connected to the top of the power head and a lower resilient mount positioned on each side of the lower end of the drive shaft housing. The upper and lower mounts have elastic axes which are coaxially arranged with respect to the torque roll axis of the propulsion unit.
Inventors
- 👤 Gerald H Wick
- 👤 Theodore J Holtermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:31
CPC Classifications
B; B63; B63H; B63H21/00; B63H21/30; B63H21/305; B63H20/00; B63H20/02; B63H20/06; B63H20/08; B63H20/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
103 words
An outboard motor comprising a transom bracket, a swivel bracket mounted for vertical tilting movement on said transom bracket, a propulsion unit including a power head and a lower unit including a generally upright drive shaft, and means for supporting said propulsion unit from said swivel bracket to afford steering about an axis generally parallel to and forwardly of said drive shaft, said propulsion unit supporting means including an upper resilient mount connected to said swivel bracket and secured to said propulsion unit above said power head and a lower resilient mount connected to said swivel bracket and secured to said lower unit.
Claim 2
Dependent Claim
103 words
An outboard motor comprising a transom bracket, a swivel bracket mounted for vertical tilting movement on said transom bracket, a propulsion unit including a power head and a lower unit including a generally upright drive shaft, and means for supporting said propulsion unit from said swivel bracket to afford steering about an axis generally parallel to and forwardly of said drive shaft, said propulsion unit supporting means including an upper resilient mount connected to said swivel bracket and secured to said propulsion unit above said power head and a lower resilient mount connected to said swivel bracket and secured to said lower unit.
Claim 3
Dependent Claim
32 words
An outboard motor according to claim 1 wherein said lower unit includes a drive shaft housing and said lower mount includes a resilient block on each side of said drive shaft housing.
Claim 4
Dependent Claim
18 words
An outboard motor according to claim 1 wherein said upper mount is disposed rearwardly of said drive shaft.
Claim 5
Dependent Claim
35 words
An outboard motor according to claim 3 wherein said lower mount includes a pair of transversely spaced resilient blocks extending generally horizontally and disposed transverse to the direction of intended motion of said propulsion unit.
Claim 6
Dependent Claim
40 words
An outboard motor according to claim 1 wherein said propulsion unit includes a torque roll axis, wherein said upper mount is substantially coaxial to said torque roll axis and said lower mount is disposed transversely to the torque roll axis.
Claim 7
Dependent Claim
118 words
An outboard motor comprising a transom bracket, a swivel bracket mounted on said transom bracket for vertical tilting movement, a kingpin assembly mounted on said swivel bracket for pivotal steering movement rearwardly of said transom bracket, a propulsion unit having a torque roll axis and including a power head, a drive shaft housing and a lower unit gear case, and means for connecting said propulsion unit to said kingpin assembly, said propulsion unit connecting means including an upper resilient mount connected to said kingpin assembly and secured to said propulsion unit above said power head and a lower resilient mount connected to said kingpin assembly and secured to said drive shaft housing above said lower unit gear case.
Claim 8
Dependent Claim
118 words
An outboard motor comprising a transom bracket, a swivel bracket mounted on said transom bracket for vertical tilting movement, a kingpin assembly mounted on said swivel bracket for pivotal steering movement rearwardly of said transom bracket, a propulsion unit having a torque roll axis and including a power head, a drive shaft housing and a lower unit gear case, and means for connecting said propulsion unit to said kingpin assembly, said propulsion unit connecting means including an upper resilient mount connected to said kingpin assembly and secured to said propulsion unit above said power head and a lower resilient mount connected to said kingpin assembly and secured to said drive shaft housing above said lower unit gear case.
Claim 9
Dependent Claim
60 words
An outboard motor according to claim 6 wherein said upper mount includes a resilient rubber block having an axis approximately coinciding with said torque roll axis and said lower mount has an elastic axis approximately coinciding with said torque roll axis and includes resilient rubber blocks extending horizontally and disposed transverse to the direction of motion of said propulsion unit.
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) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |