U.S. patent application number 10/410360 was filed with the patent office on 2004-10-14 for bow spring of a folded umbrella.
Invention is credited to Ko, Chin Sung.
Application Number | 20040200517 10/410360 |
Document ID | / |
Family ID | 33130775 |
Filed Date | 2004-10-14 |
United States Patent
Application |
20040200517 |
Kind Code |
A1 |
Ko, Chin Sung |
October 14, 2004 |
Bow spring of a folded umbrella
Abstract
The present invention relates to a bow spring of a folded
umbrella, which includes an improved bow spring having a short
length and a side coil spring being received in upper tube of the
umbrella. The coil spring can provide elastic force to push the
engaging end of the bow spring outward to position the umbrella
opening. The length of the tube and the umbrella can be effectively
decreased that obtains improvement for easy carry.
Inventors: |
Ko, Chin Sung; (Changhua
Shien, TW) |
Correspondence
Address: |
ROSENBERG, KLEIN & LEE
3458 ELLICOTT CENTER DRIVE-SUITE 101
ELLICOTT CITY
MD
21043
US
|
Family ID: |
33130775 |
Appl. No.: |
10/410360 |
Filed: |
April 10, 2003 |
Current U.S.
Class: |
135/37 |
Current CPC
Class: |
A45B 19/04 20130101;
A45B 25/08 20130101 |
Class at
Publication: |
135/037 |
International
Class: |
A45B 025/12 |
Claims
1 (Canceled).
2: The bow spring for a folding umbrella as claimed in claim 3,
wherein the main bow spring member and the spring member are
received in a connector received in said upper tube of the folding
umbrella.
3: A bow spring for a folding umbrella comprising: a main bow
spring member having first and second opposing ends, and a spring
recess being formed in a central shaft thereof, said first end
being pivotally connected to an inner wall of an upper tube of said
folding umbrella, said second end retractably projecting through a
slot formed through said upper tube; and, a spring member being
received within said spring recess and biasing said main bow spring
member against said inner wall of said upper tube, whereby a runner
of said folding umbrella is selectively locked in place when said
second end of said main bow spring projects through said slot.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to a bow spring of a folded
umbrella, which has a short total length for easy carry.
BACKGROUND OF THE INVENTION
[0002] An important objective of a folded umbrella is to decrease
its total length when the umbrella is closed for easy carry. For
example, a conventional folded umbrella, as shown in FIG. 1, has
several tubes, which can be received one by one as closing. A bow
spring (1) must be provided in the upper tube (2) for positioning a
runner to maintain the umbrella at opening state. This known bow
spring (1) is usually made of metal and has a lower bow portion
(11) for providing elastic force to push its upper engaging end
(12) outward for use. Under the basic structure, the tube (2) has a
certain length because the length of the bow spring (1) can not be
decreased effectively. So the length of the folded umbrella can not
be effectively decreased neither.
[0003] Accordingly, the primary object of the invention is to
provide a folded umbrella, which has a short bow spring provided in
the upper tube (2) of the shaft. The length of the upper tube as
well as the folded umbrella will be then decreased effectively.
BRIEF DESCRIPTION OF ACCOMPANYING DRAWINGS
[0004] Now the features and advantages of the present invention
will be described in detail with reference to the accompanying
drawings.
[0005] FIG. 1 is a cross-sectional plan view of a conventional
folded umbrella showing its shaft and a prior bow spring.
[0006] FIG. 2 is a cross-sectional plan view showing a shaft and a
bow spring according to the present invention.
[0007] FIG. 3 is a perspective view showing parts of FIG. 2 of the
present invention.
[0008] FIG. 4 is an exploded perspective view showing the bow
spring apparatus according to the present invention.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
[0009] Please referring to FIG. 2 to 4, the present invention
relates to an improvement for a bow spring of a folded umbrella,
wherein the bow spring (3) is provided in an upper tube (2) of a
shaft of the umbrella. The bow spring (3) of the present invention
having a short length is provided with a side coil spring (31).
This coil spring provides elastic force to push upper engaging end
(33) extending outward from a slot (21) of the upper tube (2) to
position a runner and to keep the umbrella opening. For convenient
assembly, the bow spring (3) and the coil spring (31) of the
present invention can be received in a connector (32) and then
assembled in the upper tube (2).
[0010] According to the description above, the present invention
being special designed provides an improvement in decreasing the
length of the bow spring, the upper tube, and the folded umbrella
when closing. Hence, the umbrella can be carried more convenient
for users.
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