Tent – canopy – umbrella – or cane – Umbrella – Collapsible in length
Reexamination Certificate
1999-08-24
2001-02-27
Stodola, Daniel P. (Department: 3634)
Tent, canopy, umbrella, or cane
Umbrella
Collapsible in length
C135S020300, C135S028000, C135S037000
Reexamination Certificate
active
06192906
ABSTRACT:
BACKGROUND OF THE INVENTION
Conventional automatic umbrellas use springs seated in the umbrella stick to open an umbrella canopy. When the runner escapes from the retention and the stick extends, the runner moves upwards and the umbrella stretcher system spreads out to complete the opening operation of an umbrella. However, these known umbrella structures often malfunction due to the limitation of a single spring's insufficient resilient forces and the umbrella stretchers' fundamental structure. Users can not open the umbrella completely and smoothly. Thus it is desirable to have improvements made on conventional opening umbrella mechanisms to eliminate these deficiencies.
In view of the above problems, the present invention is to provide an improved opening umbrella mechanism in which a spring is disposed between the runner and the first main umbrella stretcher to provide an auxiliary pulling force in the opening operation of the umbrella to achieve a smooth opening effect. Now the structural features and advantages of the invention will be described in detail with reference to the accompanying drawings.
REFERENCES:
patent: 3508560 (1970-04-01), Kitani
patent: 6006770 (1999-12-01), Lin et al.
Harris Erica B.
Rosenberg , Klein & Lee
Stodola Daniel P.
LandOfFree
Automatic opening umbrella mechanisms does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Automatic opening umbrella mechanisms, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic opening umbrella mechanisms will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2578899