Shape memory alloy actuators for toy vehicles
US6390878B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 1999 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | Nov 26, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63H17/26
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
This invention provides a toy vehicle incorporating actuators made from a shape memory alloy material. These actuators may be in the form of a spring, wire or similar form that has a mechanical response upon the application or removal of heat. In particular, wires may be connected about hinges for doors, hoods, convertible roofs and other such items which, upon the application of heat to the wire of shape memory alloy, causes contraction of the wire and rotation about the hinged joint of the body part. As such shape memory alloy actuators are generally only operably in a single direction, they may be provided in pairs or in opposition to another biasing means to cause the opposed rotation about the joint when desired. The preferred source of heat to the shape memory alloy actuators is through the provision of electrical energy to the wire to create heat through the resistance of the shape memory alloy actuator itself.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.