Marine propulsion – Jet drive – Having means to prevent clogging
Patent
1997-06-02
1999-03-02
Swinehart, Ed L.
Marine propulsion
Jet drive
Having means to prevent clogging
440 38, B63H 1101
Patent
active
058762582
ABSTRACT:
A weed grate for a watercraft having a jet propulsion unit. The weed grate includes a plurality of cantilever tines each joined to a pivot rod. The cantilever tines extend across the inlet opening for the jet drive to prevent debris from entering through the water inlet opening. A spring member is mounted between the cantilever tines and a mounting frame such that the spring member provides an outward rotational bias force against the rotatable cantilever tines. During operation of the watercraft, if a mass of weeds becomes clogged in the cantilever tines, the upward and inward suction force of the jet drives causes the cantilever tines to rotate upward against the rotational bias force and allow the weeds to be ingested by the jet drive.
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Mercury Marine's Service Manual 90-824724, 1993, pp. 4A1-4A-35.
Brunswick Corporation
Swinehart Ed L.
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