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US 6,375,193 B1Granted
Dartboard
OwnerChih-Hao Yiuinventor
Life of this patent
Estimating the term…
Abstract
A dartboard includes a heat-conductive frame and a heat-fusible block which is composed of a plurality of strips. The frame includes a board with a peripheral wall extending from the board. The heat-conductive frame is heated and cuts into the heat-fusible block to let a piece of the heat-fusible block enclosed by the frame. The piece of the heat-fusible block enclosed by the frame is separated into partitions by a plurality of separating ribs extending from the board and the peripheral wall.
Claims3
A dartboard comprising:
- a main frame having supporting frames, and
- a plurality of heat-conductive frames each having a board and a peripheral wall extending from said board so as to define a space, said heat-conductive frames movably engaged with said main frame and separated by said supporting frames, a plurality of bosses extending from each of said boards and a film located adjacent to said bosses and connected to a circuit board, a plurality of separating ribs extending from each of said boards and said peripheral wall of each of said boards, a heat-conductive layer attached to an inside of each of said heat-conductive frames and an outside of each of said separating ribs, said heat-conductive layer heatable to proper temperature for cutting into a heat-fusible block composed of a plurality of strips connected with each other, a piece of said heat-fusible block enclosed in each of said heat-conductive frames after said heat fusible block is cut.
Dependencies are inferred from the claim text.