Tent – canopy – umbrella – or cane – Umbrella – Self-opening and closing
Reexamination Certificate
1999-10-15
2001-03-06
Barfield, Anthony D. (Department: 3636)
Tent, canopy, umbrella, or cane
Umbrella
Self-opening and closing
C135S020300, C135S024000
Reexamination Certificate
active
06196243
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to an automatic umbrella, and more specifically to an automatic umbrella control mechanism for controlling opening/closing of the umbrella by a common button.
A conventional umbrella must be opened manually with both hands. Recently, a variety of semi-automatic umbrellas have been disclosed, and have appeared on the market. These semi-automatic umbrellas commonly use spring means controlled by a button to release the folding collapsible umbrella frame from the constraint. However, these semi-automatic umbrellas must be closed manually with both hands when not in use.
SUMMARY OF THE INVENTION
It is the main object of the present invention to provide an automatic umbrella control mechanism, which enables the user to open and close the umbrella automatically by means of operating a common button. According to the present invention, the automatic umbrella control mechanism comprises a socket, the socket comprising a receiving chamber, a longitudinal sliding groove inside the receiving chamber, a transverse pivot disposed inside the receiving chamber at a top side, a hook turned about the transverse pivot, a torsional spring mounted on the transverse pivot and connected to the hook to force the hook in one direction, a compression spring mounted in the receiving chamber inside the socket, a receptacle supported on the compression spring inside the socket, the receptacle comprising a tubular bottom flange coupled to the compression spring, a rib coupled to the longitudinal sliding groove inside the socket to guide vertical movement of the receptacle in the socket, a pressure strip disposed at one side opposite to the rib, and a rectangular top notch corresponding to the pressure strip, and a button controlled to open/close the folding collapsible umbrella frame of the umbrella. When the button is depressed, the hook is tilted and released from the umbrella shaft for enabling the folding collapsible umbrella frame assembly to be opened by spring means. When the button is depressed again, a retainer bit is released, enabling the opened umbrella frame assembly to be collapsed by means of the operation of spring means in the umbrella shaft of the folding collapsible umbrella frame assembly.
REFERENCES:
patent: 4989625 (1991-02-01), Wu
patent: 5390686 (1995-02-01), Lin et al.
patent: 5617889 (1997-04-01), Wu
patent: 5823215 (1998-10-01), Chou et al.
patent: 5992433 (1999-11-01), Chung-Kuang et al.
Bacon & Thomas PLLC
Barfield Anthony D.
Ming Ho Umbrella Industry Co., Ltd.
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