Fire escape – ladder – or scaffold – Wall- or floor-attached – Spring-biased pivoted step or ladder
Patent
1989-10-18
1990-05-22
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Wall- or floor-attached
Spring-biased pivoted step or ladder
182 91, 114362, B63B 2714, B63B 2700
Patent
active
049269658
ABSTRACT:
A self retracting step apparatus (10) mounted on the underside of a boat step (12) that projects rearwardly from the transom (14) of a boat. The step apparatus includes a mounting bracket (26) to which a support bar (16) is pivotally connected. A stirrup step (20) is secured to the distal end of the support bar, and is pivotal between an extended position and a retracted position. The support bar and stirrup step define a forwardly facing reactive surface (24) against which drag forces act upon movement of the boat. Springs (22) connected from the mounting bracket to the support bar nominally bias the stirrup step to the extended position, but may be overcome by the drag forces to allow the stirrup step to begin pivoting towards the retracted position. Once the stirrup step has begun movement from the extended position, the springs act to compel further pivoting of the stirrup step to a retracted position for stowage.
REFERENCES:
patent: 326098 (1885-09-01), Bodman
patent: 814687 (1906-03-01), Gault
patent: 2678832 (1954-05-01), Wright
patent: 3195680 (1965-07-01), Thornburg
patent: 3794140 (1974-02-01), Sell
patent: 4541661 (1985-09-01), Hawk
patent: 4733752 (1988-03-01), Sklar
patent: 4742795 (1988-05-01), De Prey
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