Grating apparatus for protecting the draft port of a water-jet p

Details Grating apparatus for protecting the draft port of a water-jet p Grating apparatus for protecting the draft port of a water-jet p

1976-03-16

1977-06-07

Blix, Trygve M.

Ships

Building

Canal and ferry boats

114221R, B63H 1104

Patent

active

040276171

ABSTRACT:
A device for protecting the inlet or draft port of a water-jet propulsion system is disclosed. In a forward part of the inlet port of a drafting duct of a propulsion pump, a grate is mounted rotatable around a shaft which in turn is supported by a bracket. The bracket is secured to a lower part of the pump casing. A pin, passing through the grate, is urged by a spring to engage a part of the bracket to lock the grate in a position to block large objects from entering the duct. When the pin is disengaged against the force of the spring the grate is rotated to a position to permit manual entry into the duct for repair purposes.

REFERENCES:
patent: 1670948 (1928-05-01), Ackerman
patent: 1763464 (1930-06-01), Gunderson et al.
patent: 3111108 (1963-11-01), Trotter
patent: 3706164 (1972-12-01), Glause et al.

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