Umbrella

Details Umbrella Umbrella

2000-06-27

2001-11-06

Canfield, Robert (Department: 3635)

Tent, canopy, umbrella, or cane

Umbrella

Runners and notches

C135S029000, C135S023000, C135S031000, C135S039000, C135S015100

Reexamination Certificate

active

06311707

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to an umbrella, and more particularly, to an improved umbrella which has two sets of stretchers connected to the ribs and a sleeve slidably mounted to the shaft of the umbrella so that the umbrella is easily to be expanded.
BACKGROUND OF THE INVENTION
A conventional umbrella as shown in
FIG. 9
generally includes a shaft
40
having a finishing cap
41
on a top end thereof and a handle
400
on a lower end of the shaft
40
. A plurality of ribs
31
pivotally connected to the finishing cap
41
and a panel is connected to the tip end of each rib
31
. A runner
42
is movably mounted to the shaft
40
and a plurality of stretchers
32
are pivotally connected between the runner
42
and the ribs
31
. When expanding the umbrella, the user pushes the runner
42
along the shaft
40
till the runner
42
is stopped by a top spring on the shaft
40
. The stretchers
32
push the ribs
31
to expand the panel when the runner
42
is stopped by the top spring. When folding the umbrella, the runner
42
is pulled downward to pivot the stretchers and stopped by the lower spring on the shaft
40
. The ribs
31
are folded about the finishing cap
41
and the panel is folded. The user has to take a hard effort to overcome the resistant force of the stretchers and the ribs when expand the umbrella. When the umbrella is folded, the runner
42
will move rapidly when the top spring is compressed, and this actions often hurt the user's hand.
The present invention intends to provide an umbrella having a sleeve mounted to the shaft and a runner mounted to the sleeve, the runner is moved by the movement of the sleeve which is operated by the user. The distance that the sleeve is moved is short and convenient so that the user's hand does not necessary hold the runner and move for a long distance when expanding and folding the umbrella. The umbrella improves the disadvantages of the conventional umbrella.
SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, there is provided an umbrella comprising a shaft having a finishing cap on a first end thereof and a handle on a second end of the shaft. A plurality of ribs are radially and pivotally connected to the finishing cap. A sleeve is slidably mounted to the shaft with a stop extending radially outward from a first end of the sleeve
21
, and a first flange and a second flange respectively extending radially outward from the sleeve. The first flange is located between the stop and the second flange. A collar is movably mounted to the sleeve and located between the stop and the first flange. A plurality of first stretchers are pivotally connected between the collar and the ribs. A runner is movably mounted to the sleeve and located between the first flange and the second flange. A plurality of second stretchers are pivotally connected between the runner and the ribs.
The object of the umbrella of present invention is to provide an improved structure comprising two sets of stretchers respectively pivotally connected to a collar and a runner both of which are slidably mounted to a sleeve mounted on the shaft of the umbrella. By the two sets of stretchers, the umbrella is easily to expand.
These and further objects, features and advantages of the present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, several embodiments in accordance with the present invention.


REFERENCES:
patent: 334588 (1886-01-01), Jones
patent: 360294 (1887-03-01), Haitz
patent: 952630 (1910-03-01), Philip
patent: 1513655 (1924-10-01), Turner
patent: 3565087 (1971-02-01), Arai
patent: 5050627 (1991-09-01), Hengtzu
patent: 5329953 (1994-07-01), Becher

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