Four-section umbrella strut spreader structure

Details Four-section umbrella strut spreader structure Four-section umbrella strut spreader structure

1994-07-29

1995-02-28

Mai, Lanna

Tent, canopy, umbrella, or cane

Umbrella

Collapsible in length

135 31, 403395, A45B 1900

Patent

active

053927990

ABSTRACT:
The invention herein relates to a kind of four-section umbrella strut spreader structure that mainly offers a highly safe and smoothly operating umbrella strut spreader structure to increase overall practicality and which consists of a structural improvement within the strut spreader members through the addition of an upward facing U-shaped opening and a T-shaped guide on the third main strut member, wherein a leaf-type strut member is inserted through the U-shape opening to maintain smooth action during the opening and the folding of the umbrella. Furthermore, the third main strut member can be configured as a S-shaped strut spreader element to reduce the overall physical dimensions of the umbrella strut spreader rear ends.

REFERENCES:
patent: 3535751 (1970-10-01), Batchelor
patent: 4815489 (1989-03-01), Yang
patent: 4966180 (1990-10-01), Lai
patent: 5048550 (1991-09-01), Su
patent: 5135016 (1992-08-01), Stiller
patent: 5193565 (1993-03-01), Huang
patent: 5297572 (1994-03-01), Kuo

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