Lightening multiple-fold automatic umbrella with control module

Details Lightening multiple-fold automatic umbrella with control module Lightening multiple-fold automatic umbrella with control module

1999-03-01

2001-03-13

Canfield, Robert (Department: 3635)

Tent, canopy, umbrella, or cane

Umbrella

Self-opening and closing

C135S022000, C135S025100, C135S020300

Reexamination Certificate

active

06199571

ABSTRACT:

BACKGROUND OF THE INVENTION
U.S. Pat. No. 5,791,359 granted to the same inventors of this application disclosed a multiple-fold automatic umbrella having lightening umbrella structure, which however requires an elongate control lever (
52
) to be pivotally mounted in the grip (
12
) by a pivot (
521
), thereby causing a complex and inconvenient assembly of the elements of the control means (
5
). Meanwhile, the link (
41
) of the drag means (
4
) should be secured in a link holder (
42
) by a pin (
422
) and the link holder (
42
) is further secured in a lower portion of the lower tube (
11
) of the central shaft (
1
), thereby causing inconvenience and complexity for assembling the elements of the umbrella.
U.S. Pat. No. 4,682,616 to Schultes disclosed an umbrella with a mechanism for locking and releasing a slider including a bolt (
18
) slidably carried in the handle (
1
) and a release button (
15
) secured to the bolt (
18
). As shown in
FIG. 7
of the Schultes patent (,616), the handle (
1
) should be separated into a bottom part and a top part, with the two detachable parts provided to define the slide channel (
1
a
″) and to mount the bolt (
18
) and the spring (
17
) therebetween to be easily accessible. However, such two parts when combined for assembling the complete handle (
1
) will form a “boundary line” at their connection edges, thereby influencing an esthetic decorative effect for the umbrella. The hook portion of the top part engageable and combinable with the groove of the bottom part of the handle should each be made by plastic material (dotted line shown in
FIG. 7
of Schultes patent), not suitably made by wooden material. It may therefore be difficult to make the handle (
1
) of the umbrella by wooden material and the handle as made of plastic material may decrease its commercial value and ornamental effect in consideration of the noble feeling as enabled by wooden material.
The present inventors have found the drawbacks of the conventional multiple-fold automatic umbrella, and invented the present lightening multiple-fold automatic umbrella.
SUMMARY OF THE INVENTION
The object of the present invention is to provide a lightening multiple-fold automatic umbrella comprising: a central shaft consisting of a plurality of tubes telescopically engageable with one another; a rib assembly having at least a top rib and a stretcher rib pivotally secured to an upper notch on the central shaft and a lower runner slidably held on the central shaft for securing an umbrella cloth on the rib assembly; an opening spring retained within the central shaft for opening the umbrella; a drag rope retained between the central shaft and the lower runner for pulling the lower runner as upwardly moved when opening the umbrella and extending the rib assembly; and a control module embedded in a grip of the central shaft normally locking the lower runner when closing the umbrella for folding the rib assembly; and operatively unlocking the lower runner when opening the umbrella for extending the rib assembly, thereby providing a multiple-fold automatic umbrella for quick assembly and convenient operation or maintenance.


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