Supports – Stand – Plural leg
Patent
1995-04-18
1997-03-25
Ramirez, Ramon O.
Supports
Stand
Plural leg
248166, 2483541, 248435, F16M 1100
Patent
active
056136587
ABSTRACT:
A tripod apparatus 10 having a generally triangular base 11, three upright members 13, 14, 15, each pivotally connected at one end to the base 10 proximate the respective corners of the base 10 and extending upwards to a support member 19 which, in use, provides a support point for raising or lowering an object such as a rescue basket along a cliff or building face. One of the uprights 15 is articulated so that the user may selectively move the support member 19 between a retracted position rearward of a forward side edge 17 of the base 11, and an extended position forward of the forward side edge 17. Preferably, the upright 15 is in the form of a bar linkage having a first elongate member 21 which is pivotally connected at its upper end to the support member 19 and at its other end to an intermediate position of a second elongate member 22. The second member 22 has one end pivotally connected to a rearward corner of the base 11 with its other end portion forming a lever 60 which is used to move the intermediate position thereof relative to the nominal forward side edge 17 of the base 11, which movement is transmitted to the support member 19 by the first elongate member 21.
REFERENCES:
patent: 4015806 (1977-04-01), Cattermole
patent: 4993635 (1991-02-01), Dupre
Hamilla Brian J.
Ramirez Ramon O.
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