Tent – canopy – umbrella – or cane – Umbrella – Mechanically operated
Reexamination Certificate
2002-08-13
2004-04-20
Yip, Winnie S. (Department: 3637)
Tent, canopy, umbrella, or cane
Umbrella
Mechanically operated
C135S098000, C242S394000, C242S395000
Reexamination Certificate
active
06722381
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention is related to a mechanism for umbrella self lock operation.
2. Description of the Prior Art
Umbrella is the necessary fixture for traveling, dinning and outdoor recreation etc. In the recent years, due to the richness in shape and the improvement in the feeling quality, umbrella is evolved from the simple tool for shading against the sun and rain and is then transferred to use as internal decoration and art pieces. It is becoming to be the favor items used in outdoor and indoor decoration.
The traditional umbrella consists of surface, pole, seat and coil winding operation mechanism. In general, it only has simple winding open and close function.
But, as the sun rises, it will move from east to west. The result is that after the umbrella is opened and maintained straight up, it may shade some sunlight. But, it could not shade against any sunrays coming from oblique angles. Therefore, for any angling sunrays, the traditional umbrella could not swing the shading angle for effective shading. Therefore, it is necessary to design a shading angle movement mechanism for large umbrella, to provide solution for the umbrella shading angle change problem.
Please refer to FIG.
8
. It is a sectional drawing for the traditional umbrella post folding mechanism. It consists of an upper structure,
50
, and a lower structure,
60
. The center of the upper structure,
50
, has a keyhole,
51
. And, at the back of the upper structure's end plate,
52
, there is a key trough. The lower structure,
60
, has a cartridge trough,
61
, a push button trough
62
with key thread
63
and spring insert trough
64
. After the spring
65
enters the spring trough
64
, it will embed the push button
62
into the lower structure
60
's trough hole
66
. It will also place the upper structure
50
into the lower structure
60
's cartridge trough
61
, through a pin body
67
passes through the key hole
51
and locks on with nut
68
to form the joint. To change the shading angle of the umbrella, it pushes in the push button
62
to fold the post connecting the upper structure
50
and the top of the umbrella. This will make a suitable angle to block off oblique sunrays.
But, in the traditional angle change mechanism, the operation procedure to move the umbrella is very inconvenient to the user. The open and close of the umbrella uses hand to control the handle of the coil winding mechanism. To change the shading angle of the umbrella, it also requires the use of push button operation. Furthermore, to change and move the shading angle, it also requires the changing of the position of push button. And, the angle changing mechanism is normally located at a higher position. Hand utilization is also required to push and unlock. The other hand is also needed to hold and move the upper umbrella post. The use of two hands at the same time is difficult to coordinate and requires the use of lots of force. It is a very difficult operation.
SUMMARY OF THE INVENTION
This invention is related to a mechanism for umbrella self lock operation.
The main purpose of this invention is to provide an umbrella self lock operation mechanism. It will simplify the operation mechanism to open and close umbrella. The shading angle change mechanism is the same as the open and close mechanism as described before. This is to make it convenient for general users to use hand control.
The secondary purpose of this invention is to provide an umbrella self-locking operation mechanism. It has a self-lock mechanism to prevent the umbrella closing due to strong wind. It also will prevent umbrella blow out from happening.
The foregoing object and summary provide only a brief introduction to the present invention. To fully appreciate these and other objects of the present invention as well as the invention itself, all of which will become apparent to those skilled in the art, the following detailed description of the invention and the claims should be read in conjunction with the accompanying drawings. Throughout the specification and drawings identical reference numerals refer to identical or similar parts.
Many other advantages and features of the present invention will become manifest to those versed in the art upon making reference to the detailed description and the accompanying sheets of drawings in which a preferred structural embodiment incorporating the principles of the present invention is shown by way of illustrative example.
REFERENCES:
patent: 2914154 (1959-11-01), Russell
patent: 3410285 (1968-11-01), Small
patent: 4386621 (1983-06-01), Redl
patent: 4622987 (1986-11-01), Redl et al.
patent: 5437297 (1995-08-01), Crisman et al.
patent: 5884859 (1999-03-01), Ma
patent: 6182917 (2001-02-01), Lai
patent: 6196242 (2001-03-01), Xu
patent: 6196489 (2001-03-01), Ma
patent: 6230724 (2001-05-01), Lai
patent: 6591848 (2003-07-01), Ma
Lei Leong C.
Yip Winnie S.
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