Fire escape – ladder – or scaffold – Scaffold external of shaft
Patent
1990-06-25
1992-01-07
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Scaffold external of shaft
108152, A45F 326, A01M 3102
Patent
active
050782320
ABSTRACT:
An improved structurally sturdy, portable tree stand. The improved tree stand comprises a pair of elongated members, each of the elongated members having a portion at one end turned at substantially a right angle to its respective elongated member, and having a device for securely engaging a tree or the like. The elongated members are adjustably joined together to selectively space the elongated members a desired distance apart and maintain a substantially parallel relationship therebetween. A support platform is attached to the elongated members, and a Y-shaped member is in turn pivotably attached at the ends of the branched arms thereof to the support platform outboard of the elongated members and more than half way away from the turned portions of the elongated members. The terminous of the central arm of the Y-shaped member also includes a device for securely engaging a tree or the like. A web or chain is provided for attaching the elongated members to a tree or the like, the web or chain being adapted to engage the turned portions of the elongated members such that when the elongated members are urged to a position to extend substantially radially from the tree or the like, the tree engaging devices attached to the turned portions securely engage the tree.
REFERENCES:
patent: 3025107 (1962-03-01), Marshall
patent: 3392802 (1968-07-01), Moore
patent: 3822813 (1974-07-01), Carter
patent: 4337844 (1982-07-01), Hice
patent: 4417645 (1983-11-01), Untz
patent: 4600082 (1986-07-01), Rauls
patent: 4641727 (1987-02-01), McKelvy
patent: 4667773 (1987-05-01), Davis
patent: 4730700 (1988-03-01), Miller
Kessler Lawrence P.
Machado Reinaldo P.
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