Super-shortened multiple-fold umbrella

a multi-fold umbrella and umbrella technology, applied in umbrellas, clothing, applications, etc., can solve problems such as circular rod ribs and umbrellas that cannot be opened normally

Inactive Publication Date: 2006-07-13
FUTAI UMBRELLA FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0009] Still another object of the present invention is to provide a multiple-fold (including penta-fold) rib assembly pivotally secured t

Problems solved by technology

However, this prior art still has the following drawbacks: 1.
The multiple-fold shaft (1) includes plural telescopic tubes tapered upwardly so that a large aperture will exist between the runner (23) and the uppermost tube (11 or 10), thereby causing unstable engagement of the sprin

Method used

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  • Super-shortened multiple-fold umbrella
  • Super-shortened multiple-fold umbrella
  • Super-shortened multiple-fold umbrella

Examples

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Embodiment Construction

[0023] As shown in the drawing figures, the present invention comprises: a central shaft 1 having seven tubes 1a, 1b, 1c, 1d, 1e, 1f and 1g telescopically coupled with one another; a rib assembly 2 pivotally secured to an upper notch 20 formed on a top of the central shaft 1 and a runner (or safety runner) 3 slidably held on a runner sleeve 11 disposed, jacketed or formed on the central shaft 1.

[0024] The tubes gradually or gradationally increase the number of concave portions V formed on each tube from the outermost (or first) tube 1a to the innermost (or seventh) tube 1g.

[0025] Each concave portion V is recessed centripetally from a circular periphery of the tube towards a longitudinal axis X defined at a longitudinal center of the central shaft 1, defining a central angle of 60 degrees (FIG. 2) of a 360-degree circle, as being less than 90 degrees, for each concave portion V.

[0026] Since the concave portion(s) V is or are gradually or gradationally increased from the outermost...

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Abstract

A multiple-fold umbrella includes a telescopic central shaft having seven tubes telescopically coupled with one another, with an outermost tube having no (or zero) concave portion formed on the outermost tube, and with an innermost tube having six concave portions circumferentially formed on the innermost tube, each concave portion recessed in the tube centripetally about a longitudinal axis of the shaft and defining a central angle of sixty degrees, and the tubes gradationally increasing the number of the concave portions from the outermost tube towards the innermost tube to define an air chamber between a concave portion of an inner tube and a circular periphery of an outer tube neighboring to the inner tube for a smooth slidable coupling of every two neighboring tubes.

Description

BACKGROUND OF THE INVENTION [0001] U.S. Pat. No. 6,035,873 (the prior art) invented by the same inventors of this application disclosed a multiple-fold umbrella having gradationally convex telescopic shaft which may be provided for penta-fold umbrella as shown in FIG. 16˜23 of the accompanying drawings of the prior art. [0002] However, this prior art still has the following drawbacks: [0003] 1. Reviewing the smallest (in diameter) uppermost tube (10), it has four concave quadrants (V), which are gradually increased (from 0V to 4V) from the outermost tube (14). If the umbrella is influentially made for hexa-fold (or six-fold), it is impossible to do so because a circle can be divided into four concave quadrants (4V) only. So, the prior art can be provided for making a penta-fold umbrella only. [0004] 2. The multiple-fold shaft (1) includes plural telescopic tubes tapered upwardly so that a large aperture will exist between the runner (23) and the uppermost tube (11 or 10), thereby ca...

Claims

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Application Information

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IPC IPC(8): A45B19/00
CPCA45B19/04
Inventor LIN, CHUNG-KUANGCHANG, JUNG-JEN
Owner FUTAI UMBRELLA FACTORY
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