Beds – Cots – Sectional
Reexamination Certificate
1999-10-18
2001-05-29
Trettel, Michael F. (Department: 3628)
Beds
Cots
Sectional
C005S187000, C005S174000, C482S027000
Reexamination Certificate
active
06237169
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates generally to a trampoline, and more particularly to a foldable trampoline.
BACKGROUND OF THE INVENTION
The construction of the conventional trampoline is simple and unfoldable. Moreover, the connection between the spring clement and the frame arc easily loosened. This can cause the central cloth to separate from the frame thereby causing fall off. Such device is defective in design and not cost-effective.
SUMMARY OF THE INVENTION
The primary objective of the present invention is therefore to provide a foldable trampoline free from the drawbacks of the conventional trampoline described above.
In keeping with the principle of the present invention, the foregoing objective of the present invention is attained by a device which is buckled together between a foldable frame and a stable spring element.
The objective, features and functions of the present invention will be readily understood upon a thoughtful deliberation of the following detailed description of the present invention with reference to the accompanying drawings.
REFERENCES:
patent: 1267352 (1918-05-01), Baker
patent: 2076811 (1937-04-01), Ehlers
patent: 3891208 (1975-06-01), Sidlinger
patent: 4415151 (1983-11-01), Daniels
patent: 4452444 (1984-06-01), Schulze, Jr.
patent: 5545110 (1996-08-01), Hsiang
Harrison & Egbert
Trettel Michael F.
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