Prepressured force/pressure sensor and method for the fabrication thereof
US6032542A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 1998 |
| Grant date | Mar 7, 2000 |
| Priority date | — |
| Expiry date | Jun 22, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/4547
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A pressure sensitive element or array is provided which includes at least one first conductor on a first substrate and at least one second conductor on a second substrate, with a first conductor and a second conductor intersecting adjacent to each other at a sensor point and a pressure sensitive material being between the first and second conductors at each such sensor point. A mechanism is also provided which applies a predetermined prepressure to the substrates at least at selected ones of the sensor points. The prepressure for a preferred embodiment is provided by joining the substrates with an air-tight seal around a periphery of at least the pressure point to which prepressure is to be applied and by creating a reduced pressure area between the substrates within the sealed periphery. For preferred embodiments, the reduced pressure is a substantial vacuum, causing substantially atmospheric pressure to be applied to the sensor points.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.