Marine propulsion – Screw propeller – With vibration dampening
Patent
1997-04-29
1998-12-08
Basinger, Sherman
Marine propulsion
Screw propeller
With vibration dampening
248635, 248638, B63H 115
Patent
active
058461060
ABSTRACT:
A mounting arrangement for an outboard motor having a body which is connected to a watercraft mounting bracket by at least one mount is disclosed. The mount includes a resilient isolating member having a spring constant in a direction parallel to an axis extending from the front to the rear of the motor which is greater than its spring constant in direction parallel to a second line extending transverse to the first line. So arranged, the frequency of the excitation force applied to the isolating member over normal engine operating speeds does not correspond to the natural frequency of the isolating member in either direction, and resonant modes are avoided.
REFERENCES:
patent: 3139250 (1964-06-01), Turlay
patent: 3934537 (1976-01-01), Hall
patent: 4471935 (1984-09-01), Chiba et al.
patent: 5149284 (1992-09-01), Kawai
patent: 5219306 (1993-06-01), Takahashi
patent: 5511997 (1996-04-01), Yoshida
Basinger Sherman
Sanshin Kogyo Kabushiki Kaisha
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