Hinged blower access door with blower switch activation
US5322051A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 1993 |
| Grant date | Jun 21, 1994 |
| Priority date | — |
| Expiry date | Sep 9, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24H9/02
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A front access door suitable for accessing and enclosing a housing within a multipoise furnace functions in conjunction with a safety shutoff switch to provide greater access and safety when assembling and servicing the furnace. The front access door is hingably supported upon the bottom wall of the housing for removal from the furnace and rotation between a closed position and an opened position. The shutoff switch is mounted outside the housing on the top housing wall. When the access door moves into a closed position, a switch activator, mounted to the access door, passes over the top housing wall and closes the switch, thereby allowing power to flow to a blower within the housing. When the access door is moved into an open position, the switch activator opens the switch, thereby terminating power to the blower.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.