Retractable lift ring

Details Retractable lift ring Retractable lift ring

1980-09-25

1982-10-19

Blix, Trygve M.

Ships

Bitts, cleats, and pin rails

B63B 2104

Patent

active

043544452

ABSTRACT:
A lift ring device for installation in the forward portion of the deck of a boat or other item that may need from time to time to be lifted, which device can be retracted when not in use, thus to leave the deck of the boat relatively uncluttered. The lift ring (20, 60) is disposed in a slotted deck plate (12, 52) and out of this slot the lift ring may be readily lifted so that it can serve either as a deck cleat, or in the lifting or towing of the boat. A lower, rod-like portion (26, 66) is integral with the lift ring, and this rod-like portion is slidable in an elongate structural member (16, 56) attached to the underside of the deck plate. We use a compression spring (28, 68) around the rod-like portion in order to insure retraction of the lift ring when not in use, and a sturdy weight bearing device is provided on the lowermost end of the rod-like portion to assure that the lift ring will not separate from the deck plate during the lifting of the boat. The lowermost part of the elongate structural member is provided with a rotatable device (46, 86) to receive the upper, threaded end of a rod attached to the keel of the boat, such that no turnbuckle is required in securing the lift ring device firmly to the keel.

REFERENCES:
patent: 2870733 (1959-01-01), Winther
patent: 3559943 (1971-02-01), Hammond
patent: 3597808 (1971-08-01), Johnson
patent: 3724796 (1973-04-01), Hawkins
patent: 3749438 (1973-07-01), Loomis
patent: 4012157 (1977-03-01), Krause
patent: 4027502 (1977-06-01), Stuemky
patent: 4163347 (1979-08-01), Marcmann
patent: 4200944 (1980-05-01), Gillespie
patent: 4258642 (1981-03-01), Burmeister

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