Telescopic stick for a shortenable umbrella

Details Telescopic stick for a shortenable umbrella Telescopic stick for a shortenable umbrella

1986-02-03

1987-08-18

Feyrer, James R.

Tent, canopy, umbrella, or cane

Canes, sticks, crutches, and walking aids

Telescopic

A45B 1904

Patent

active

046870121

ABSTRACT:
A telescopic stick for a shortenable umbrella having at least two telesco parts guided in one another so as to be secure against relative twisting or rotation about their longitudinal axes; the two parts being provided with complementary polygonal profile or cross-section; the polygonal profile comprising at least 10 facets which embellish the umbrella stick and improve its jewel-like appearance while functioning to prevent relative rotation and preserving stability of operation as the stick is telescoped from an umbrella "open" to "closed" condition; at least one of the facets of the polygonal cross section having a concave or convex curvature in the circumferential direction.

REFERENCES:
patent: 401536 (1889-04-01), Box
patent: 1174701 (1916-03-01), Eklund
patent: 1185650 (1916-06-01), Frantz
patent: 2165967 (1939-07-01), Haupt
patent: 2771261 (1956-11-01), Niggeloh

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