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US 6,672,449 B2Granted
Motorized roller
AssigneeItoh Electric Company Limited
InventorsTatsuhiko Nakamura, Tomoyuki Fujimoto, Masaki Tanaka
Life of this patent
Estimating the term…
Abstract
By housing a driver circuit board in a motorized roller having a built-in electric motor, the troublesome external wiring can be dispensed with, thereby facilitating the mounting of the roller on other apparatus. The heat generating inside the roller from a driver circuit board in the roller is dissipated by a heat releaser, thus protecting the devices from damage and avoiding failure of control.
Claims22
A motorized roller comprising:
- a roller body;
- an electric motor;
- a speed reducer;
- and
- an electronic device,
- wherein the roller body accommodates the motor and the speed reducer,
- wherein the roller body is supported so that the body can be rotated by the motor through the speed reducer,
- wherein the electronic device is housed within the roller body and is capable of varying a current supplied to the electric motor from a power supply.
5 more elements
A motorized roller comprising:
- a roller body;
- an electric motor;
- a speed reducer;
- an electronic device,
- wherein the roller body accommodates the motor and the speed reducer,
- wherein the roller body is supported so that the body can be rotated by the motor through the speed reducer,
- wherein the electronic device is housed within the roller body to control a current supplied to the motor;
- and
- a heat releaser housed within the roller body,
- wherein the heat releaser directly or indirectly contacts the electronic device.
7 more elements
A motorized roller comprising:
- a roller body;
- an electric motor;
- a speed reducer;
- an electronic device,
- wherein the roller body accommodates the motor and the speed reducer,
- wherein the roller body is supported so that the body can be rotated by the motor through the speed reducer,
- wherein the electronic device is housed within the roller body to control a current supplied to the motor;
- and
- an inner shell housed within the roller body,
- wherein the inner shell accommodates the electronic device and a heat releaser, the heat releaser directly or indirectly contacting both the inner shell and the electronic device.
7 more elements
A motorized roller comprising:
- a roller body;
- an inner shell;
- an electric motor;
- a speed reducer;
- and
- an electronic device adapted to control a current supplied to the motor:
- wherein the roller body accommodates the inner shell;
- wherein the inner shell accommodates the motor and the reducer;
- wherein the roller body is supported so that the body is rotatable by the motor through the reducer;
- wherein the electronic device is housed within the inner shell;
- and
- wherein the electronic device is kept in contact with the inner shell.
9 more elements
A unit for a motorized roller comprising:
- a casing;
- a fixed shaft protruding from the casing;
- a driving portion housed within the casing;
- a rotating member with larger outer diameter than the casing;
- and
- an electronic device housed within the casing;
- wherein the driving portion includes an electric motor;
- wherein the electronic device is adapted to control a current supplied to the motor;
- wherein the rotating member is rotatable upon reception of a force from the driving portion;
- and
- wherein the casing is inserted into an external roller separately prepared, the fixed shaft protruding from the external roller and the rotating member engaging with an inner surface of the external roller to rotate the external roller.
8 more elements
A motorized roller comprising:
- a roller body;
- an electric motor;
- a speed reducer;
- and
- an electronic device,
- wherein the roller body accommodates the motor and the speed reducer,
- wherein the roller body is supported so that the body can be rotated by the motor through the speed reducer,
- wherein the electronic device is housed within the roller body to control a current supplied to the motor,
- wherein the electronic device includes a transistor.
6 more elements
Dependencies are inferred from the claim text.