Door apparatus for rest room
First Claim
Patent Images
1. A door apparatus for a rest room, comprising:
- wall means defining a predetermined space with an opening for entrance into and exit from said spacea door means for opening or closing said space, said door means comprising a pair of substantially half-cylindrical door members which are separated from each other and are rotatable about the center of curvature of said door members, anddrive means for driving and rotating said door members about the center of curvature.
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Abstract
A door apparatus for a rest room includes a wall member defining a predetermined space and an opening for an entrance and an exit thereof; a door body for opening or shutting the opening, having a substantially half-cylindrical shape, being rotatable about a center of curvature of the half-cylindrical shape; and a driving device for driving and rotating the door body about the center of curvature. In a preferred embodiment, the driving device has a pulley with a peripheral shape of involute, a wire wound about the pulley, and a weight connected to an end of the wire. The weight is inserted into a tube receiving oil.
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Citations
7 Claims
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1. A door apparatus for a rest room, comprising:
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wall means defining a predetermined space with an opening for entrance into and exit from said space a door means for opening or closing said space, said door means comprising a pair of substantially half-cylindrical door members which are separated from each other and are rotatable about the center of curvature of said door members, and drive means for driving and rotating said door members about the center of curvature. - View Dependent Claims (2)
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3. A door apparatus for a rest room, comprising:
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wall means defining a predetermined space with an opening for entrance into and exit from said space, door means for opening or closing said space comprising a pair of first and second substantially concentric partial-cylindrical door members which are separated from each other and are rotatable about their center of curvature, said door members being positionable to extend convexly inward whereby the space is minimum, or to extend convexly outward whereby the space is maximum, and drive means for driving and rotating said first and said second door members about their center of curvature. - View Dependent Claims (4, 5, 6)
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7. A door apparatus for a rest room, comprising:
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wall means defining a predetermined space with an opening for entrance into and exit from said space, door means for opening or closing said space comprising at least a pair of first and second substantially concentric partial-cylindrical door members which are separated from each other and are rotatable about their center of curvature, said door members being positionable to extend convexly inward whereby the space is minimum, or to extend convexly outward whereby the space is maximum, and means for driving and rotating said first and said second door members about their center of curvature.
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Specification