Can opener

Details Can opener Can opener

1998-07-29

2001-02-06

Rachuba, M. (Department: 3724)

Cutlery

Can opener

With driven roller to continuously engage bead and...

C030S426000, C030S416000

Reexamination Certificate

active

06182368

ABSTRACT:

SUMMARY OF THE INVENTION
According to the invention, there is provided a can opener comprising a elongate body, a lever connected to the body for relative pivotal movement about a substantially horizontal axis between open and closed positions, a turning knob provided at a front end of the body, a traction wheel supported for rotation about a substantially vertical axis by the knob to turn a can, a rotary cutter rotatable by the knob for opening said can while said can is being turned, and a slider supporting the rotary cutter for rotation, said slider being movable by the lever to slide linearly between a rearward position corresponding to the lever's open position in which the rotary cutter is away from the traction wheel and a forward position corresponding to the lever's closed position in which the rotary cutter is close to the traction wheel.
Preferably, the slider is movable by the lever through a cam action.
More preferably, the slider has a hole and the lever has a part engaging movably with the hole for sliding the slider in opposite directions upon said pivotal movement of the lever.
It is preferred that the body has an open side facing the lever for receiving the side of the lever facing the body when the lever is in the closed position.
In a preferred embodiment, the lever is resiliently biassed apart from the body towards the open position by means of a spring.
More preferably, one of the body and lever has a resiliently biassed hook and the other of the body and lever has a hole for the hook to releasably engage through, thereby holding the lever in the closed position against the action of the spring.
It is preferred that the turning knob has a vertical shaft and the slider is guided for sliding movement by means of a support fixed on the shaft.
In a specific construction, the turning knob has a vertical shaft on which a co-axial driving sprocket is mounted fast, and the rotary cutter is rotatable with a co-axial driven sprocket which is engageable with the driving sprocket for drive transmission when the lever reaches the closed position.


REFERENCES:
patent: D. 289365 (1987-04-01), Lee
patent: D. 410180 (1999-05-01), So
patent: 1628080 (1927-05-01), Van Leunen
patent: 1657842 (1928-01-01), Polson
patent: 5692309 (1997-12-01), Pereira
patent: 5787592 (1998-08-01), Lai
patent: 5794353 (1998-08-01), Lin
patent: 0503931 (1992-09-01), None
patent: 2161449 (1984-07-01), None
patent: 2170172 (1985-01-01), None

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