Buoys – rafts – and aquatic devices – Water skimming or walking device – Having stabilizing surface
Reexamination Certificate
2006-04-18
2006-04-18
Olson, Lars A. (Department: 3617)
Buoys, rafts, and aquatic devices
Water skimming or walking device
Having stabilizing surface
C441S074000
Reexamination Certificate
active
07029352
ABSTRACT:
A surfboard fin is fixed when it is used, and removed when it is not used. If the fin is not removed when the fin is not used, it produces an inconvenient state during transportation of the surfboard and the like. However, at present, certain screws are used for its fixing or removing. This work requires much amount of labor and a surfboard playing person feels much inconvenience for this work. The present invention provides a method capable of easily fixing a fin to or removing a fin from a surfboard manually. A rectangular groove is formed at the surfboard, a fitting box is embedded into the groove and fixed with adhesive agent. An inner groove is formed at the central part of the box, the inner groove has two protrusions at right side and two protrusions at left side at the side parts. When the fin is set in the inner groove, the two fitting grooves of respective the right and left sides are provided at the legs of the fin, fitted to the protrusions of the inner groove, whereby the fin is fixed. Fixing or removal of the fin can be carried manually in an easy manner. The fin is not removed during its use, but rigidly fixed.
REFERENCES:
patent: 5176553 (1993-01-01), Tuttle
patent: 5934962 (1999-08-01), Daum et al.
patent: 6244921 (2001-06-01), Pope
patent: 6595817 (2003-07-01), Chang
patent: 6916220 (2005-07-01), Davey et al.
Jacobson & Holman PLLC
Olson Lars A.
LandOfFree
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