Tent – canopy – umbrella – or cane – Umbrella – Retainers
Patent
1973-05-11
1976-03-23
Gilliam, Paul R.
Tent, canopy, umbrella, or cane
Umbrella
Retainers
A61H 300
Patent
active
039453898
ABSTRACT:
A collapsible walker in which gate legs are each pivotally mounted in bearings positioned at either end of a cross brace with the gate legs mounted in the bearings for rotation between an open position with the gate legs positioned generally transversely of the cross brace and a collapsed position with the gate legs folded against the cross brace. Corner braces are positioned adjacent to the bearings to provide rigid bracing support between the gate legs and the cross brace when the gate legs are in an open position, with the corner braces being movable to permit rotation of the gate legs to a collapsed position.
Detent means are provided with tab release means therefor.
The movement of the corner braces during movement of the gate legs may be determined by guide slots. Frictional means may be provided to resist opening or closing of movement of the gate legs.
The bearings in which the gate legs are mounted may include a self-lubricating plastic sleeve with a tubular member on each of the gate legs mounted within the plastic sleeve.
REFERENCES:
patent: 1432465 (1922-10-01), Johnson
patent: 1869693 (1932-08-01), Hourd
patent: 2270217 (1942-01-01), North
patent: 2771089 (1956-11-01), Magida
patent: 2778664 (1957-01-01), Herbenar
patent: 3442276 (1969-05-01), Edwards et al.
patent: 3658079 (1972-04-01), Block
patent: 3688789 (1972-09-01), Bunch
patent: 3783886 (1974-01-01), Thomas
Corbin David H.
Gilliam Paul R.
Smyth George F.
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