Marine propulsion – Screw propeller – Propulsion unit casing
Reexamination Certificate
2005-11-22
2005-11-22
Avila, Stephen (Department: 3617)
Marine propulsion
Screw propeller
Propulsion unit casing
C440S076000
Reexamination Certificate
active
06966806
ABSTRACT:
A marine propulsion device is made of first and second portions which are removably attachable to each other. The second portion is the leading edge portion of the nose cone and the drive shaft housing. It can also comprise a portion of the skeg. The second portion is configured to crush more easily in response to an impact force than the first portion. This can be accomplished by making the second portion from a different material than the first portion, which can be aluminum, or by providing one or more crush boxes within the structure of the second portion to cause it to yield more quickly to an impact force and thus protect the first portion which is the more critical structure of the marine device.
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Anderson Kevin R.
Bruestle Claus
Davis Richard A.
Jaszewski Wayne M.
Phillips George E.
Avila Stephen
Brunswick Corporation
Lanyi William D.
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