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US 6,629,483 B2Granted
Hole-forming device
AssigneesShin Iwao, Kabushiki Kaisha Iwazaki
InventorShin Iwao
Life of this patent
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Abstract
A hole-forming device includes a base member having a hole-forming projection facing a bottom of a can. The hole-forming projection is formed on an upper surface of the base member. The base member is slidable upward to the upper part of a case by pushing a pressing member. The hole-forming projection is normally held in the case for safety.
Claims1
A hole-forming device, comprising:
- a case fittable to a bottom portion of a can receptacle;
- a base member accommodated in said case, said base member slidable along a longitudinal direction of said case;
- a hole-forming projection being formed on an upper surface of said base member;
- a retaining member disposed between a wall of said case and said base member so that said hole forming projection is normally accommodated in said case;
- and
- a pressing member placed under said base member;
- said base member having a pressured slope as a lower end surface thereof;
- said pressing member having a pressing slope as an upper end surface thereof;
- said pressing slope contacting with said pressured slope;
- and
- a lower part of said pressing member protruding from a lower end of said case by circumferential rotation of said pressing member;
- wherein said retaining member is a coiled spring.
9 more elements
Dependencies are inferred from the claim text.