Device and method for protection of heating ventilation and air conditioning control circuits from overcurrents
US6075689A · kind A · utility
Inventor
Key dates
| Filing date | Aug 21, 1998 |
| Grant date | Jun 13, 2000 |
| Priority date | — |
| Expiry date | Aug 21, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2071/088
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device and method for protection of heating, ventilation, and air conditioning (HVAC) control circuits. The device includes a positive temperature coefficient (PTC) member which is a multi-use, non-bulky, element which will reset after tripping without requiring the user to access the device. The device also includes a pair of connective members to provide the external electrical interface for the device, such that the PTC member is disposed between and in electrical contact with the connective members. Each embodiment also includes a protective member covering portions of the PTC member and connective members chosen or formed sufficient to insulate a user from contact with electrical hazard and sufficient to protect the device from electrical and physical contact which would affect its performance or the performance of the HVAC control circuit to be protected. In alternative embodiments the connective members are configured as either a pair of parallel coplanar blades electrically and mechanically compatible with common blade-type fuse receptacles found in HVAC control circuits, a pair of insulated lead wires of sufficient length to allow a tradesman skilled in the art to splice…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.