Fire escape – ladder – or scaffold – Miscellaneous
Patent
1982-07-26
1983-11-15
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Miscellaneous
3 4, 272 701, A63B 2500
Patent
active
044150636
ABSTRACT:
The leg stilt device of the invention permits the user to safely adjust the height of the stilt while thereon and is stable, holding the user in a level safe position. The device includes one or more pairs of hollow tubular telescoping vertical support members, a horizontal platform secured to the upper end of the uppermost-extending such member, a broad flat horizontal base connected to the lower end of the lowermost extending vertical member of each pair and providing the desired stability, a tubular leg brace connected to and extending above the platform, and a stilt height adjusting mechanism releasably coupling the two vertical members together. The adjusting mechanism includes a biasing spring, shoe strap or the like, for urging the platform vertically, a pin releasably disposable horizontally through aligned horizontal openings in the vertical members and a pin mover including a pin biaser urging the pin into a position locking the vertical members together, and a pin retractor for removing the pin from the locked position. The retractor is controlled manually or electrically by the user by means of a pull cord or switch in the leg brace. The pin and pin mover are concealed in the device and protected from damage. A pair of the devices provide improved stability and ease of use, are simple, durable and effective.
REFERENCES:
patent: 238042 (1881-02-01), Herrington
patent: 1190421 (1916-07-01), Kalcy
patent: 2292074 (1942-08-01), Hawk
patent: 2837335 (1958-06-01), Koenig
patent: 2861730 (1958-11-01), Deahl
patent: 3058120 (1962-10-01), Smith
patent: 3346882 (1967-10-01), Wilhoyte
patent: 3365195 (1968-01-01), Hansburg
patent: 3441272 (1969-04-01), Mann
patent: 3595339 (1971-07-01), Ballard
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