Fire escape – ladder – or scaffold – Scaffold external of shaft
Patent
1988-06-10
1989-01-31
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Scaffold external of shaft
297118, 297217, A45F 326, A01M 3102
Patent
active
048009890
ABSTRACT:
A outdoorsman's seat comprising a rigid rectangular seat member having canted opposed slots in its longitudinal edges to receive two limbs of a supporting line adapted to be secured to two spaced apart trees. The opposed inclined slots result in a resultant force vector which holds the seat more tightly and securely with increased weight but nevertheless affords easy sliding movement of the seat along the limbs as well as attachment and detachment therefrom.
REFERENCES:
patent: 2549679 (1951-04-01), Foote
patent: 2847059 (1958-08-01), Klins
patent: 4315655 (1982-02-01), Machnik
patent: 4397500 (1983-08-01), Moffitt
patent: 4445591 (1984-05-01), Mitchell
patent: 4553635 (1985-11-01), Johnson
patent: 4605097 (1986-08-01), Maxwell
patent: 4705143 (1987-11-01), Ziemba
patent: 4759425 (1988-07-01), Turner
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