Fire escape – ladder – or scaffold – Wall- or floor-attached – Ladder
Patent
1985-12-30
1987-01-20
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Wall- or floor-attached
Ladder
182 92, 182206, 2482214, 403252, 403199, B63B 2920, E06C 524
Patent
active
046374922
ABSTRACT:
A latch mechanism for attaching accessories such as boarding ladders, ski tow bars and lights to a small boat. A latch plate is secured to the boat and carries a socket having an internal annular rib. A tube projecting from the accessory carries a pair of opposed latch elements each having an enlarged head extending out of the tube. A U-shaped spring wire urges the latch elements apart toward a latching position in which the heads of the elements securely interlock with the rib when the tube is fully inserted in the socket. Cam surfaces on the latch heads interact with the rib to displace the heads so that they can pass the rib as the tube is being inserted. Each latch element has a release button which extends through the side of the tube. When the buttons are depressed, the latch elements are released from the rib to permit the tube to be withdrawn from the socket.
REFERENCES:
patent: 362548 (1887-05-01), Smith
patent: 998582 (1911-07-01), Lucas
patent: 2622298 (1952-12-01), Macedo
patent: 3285366 (1966-11-01), Lindsey
patent: 3374859 (1968-03-01), Dobert
patent: 3512608 (1970-05-01), Huntley
patent: 3574367 (1971-04-01), Jankowski
patent: 3647023 (1972-03-01), Bedford
patent: 4249683 (1981-02-01), Park
patent: 4431082 (1984-02-01), Bott
patent: 4556337 (1985-12-01), Marshall
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