Smart memory material lock devices
US9697708B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2016 |
| Grant date | Jul 4, 2017 |
| Priority date | — |
| Expiry date | Jul 15, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B21/0288
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Tracking device embodiments, comprising: portable housing with a locking mechanism; band latched about a wrist; tampering detection device to detect tampering with the band, comprising: power source; latch configured to latch one end of the band within the housing; a shape memory material component connected to the latch; an electrical circuit for controlling the power source to heat the shape memory material component to cause the shape memory material component to change from a first length/shape to a second length/shape during supply of power to perform a locking function; a timer; two-way network communication device; a tracking element; tampering signal generation circuit. In embodiments, a tamper resistant container cap, comprises: cap housing releasably lockable to an open end of a container and a locking mechanism using a shape memory material component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.