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US 4,794,715 AGranted
Motor-driven map holder
OwnerCharles Cherwininventor
Life of this patent
Estimating the term…
Abstract
A roller-type map or shade holder is provided which is operated by an electric motor. In one embodiment, a simple drive clutch arrangement decouples the motor drive shaft from the map roller when the map is fully unwound or rewound.
Claims6
A self-contained motor-driven housing for mounting and rotating a map or other sheet-like article, comprising:
- a roller for mounting the article;
- a substantially enclosed housing supporting the roller within the housing for rotation about the longitudinal axis thereof, said housing having an axial opening for permitting unwinding and rewinding of the article therethrough;
- and
- a motor, powered by use of a battery mounted within the housing and being operatively coupled to the roller for reversibly rotating the roller about said longitudinal axis to wind and unwind the article.
1 more element
A motor-driven holder for a map or other sheet-like article, comprising:
- a roller for mounting the map;
- a substantially enclosed housing having first and second ends and having a door formed at one end thereof, said door having mounting means for supporting the roller for rotation about the longitudinal axis thereof, said housing also having an axial opening for permitting unwinding and rewinding of the map therethrough;
- said housing further including a motor located in the second end thereof, said motor comprising a drive shaft which is operatively connected to the roller by friction coupling and being operatively coupled to and mounting the second end of the roller for reversibly rotating the roller about the longitudinal axis to unwind and rewind the map, so that upon reaching a predetermined rotational torque level, as when the map is fully rewound and unwound, the roller is decoupled from rotation with the motor;
- and wherein
- the housing further comprises means for mounting a power source within the housing and coupling the power source to the motor to rotate the motor.
2 more elements
A motor-driven holder for a map or other sheet-like article, comprising:
- a roller for mounting the map;
- a substantially enclosed housing having first and second ends and having first door formed at one end thereof, said door having mounting means for supporting the roller for rotation about the longitudinal axis thereof, said housing also having an axial opening for permitting unwinding and rewinding of the map therethrough and having a second door formed generally to extend along the longitudinal axis of the roller for providing access to the roller and defining the slit in said housing when closed;
- said housing further including a motor located in the second end thereof, said motor and being operatively coupled to and mounting the second end of the roller for reversibly rotating the roller about the longitudinal axis to unwind and rewind the map;
- and wherein
- the housing further comprises means for mounting a power source within the housing and coupling the power source to the motor to rotate the motor.
2 more elements
Dependencies are inferred from the claim text.