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US 4,468,836 AGranted
Door dampening mechanism having a non-rotatable vane
AssigneeNifco Inc.
InventorNobuaki Omata
Life of this patent
Estimating the term…
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AssigneeNifco Inc.
InventorNobuaki Omata
Estimating the term…
A damper for the door of a cassette housing in a cassette tape recorder is formed by unrotatably inserting a resisting member provided with radially extended vanes around a support shaft protuberating from a base plate and setting the resisting member within a cup-shaped rotary member thereby allowing the vanes to slide frictionally on the inner wall surface of the rotary member. This damper is mounted in the machine proper of the recorder by fastening the resisting member to the machine proper through the medium of the fitting member and pivotally attaching the door to the rotary member by utilization of a rack and pinion. The opening and closing motion of the door is braked by the frictional slide of the resisting member on the inner wall surface of the rotary member. Thus, the shocks and vibration produced by the opening and closing motion of the door are abated.
A three piece plastic damper means for a door, comprising a fitting member provided with a base plate and a support shaft raised perpendicularly from the center of said base plate, nonrotating resisting member provided with a hub fixedly mounted on said shaft and a multiplicity of vanes extending radially from the peripheral surface of said hub, and a cup-shaped rotary member integrally provided at its substantially closed end with a gear toothed wheel, said resisting member being fit into said rotary member, and said vanes being allowed to frictionally slide intimately on the inner wall surface of the rotary member.
Dependencies are inferred from the claim text.