High pressure switch apparatus
US5508483A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1995 |
| Grant date | Apr 16, 1996 |
| Priority date | — |
| Expiry date | Mar 24, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H35/38
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high pressure switch (10) is shown having a housing member (12) with an orifice (22) extending from a first end (18) to a recess (24) formed in a surface (26) in a central portion (14) of the housing. A sidewall (28) extends from surface (26), leaving a shoulder around the recess, forming a cavity (32). An annular support plate (34) is received on the shoulder of surface (26) capturing a flexible membrane (36) which closes recess (24) to form a pressure chamber. An eyelet (40) is disposed contiguous to the support plate (34) and is locked in place by deforming the outer distal portion (30) of wall (28) radially inwardly over the outer periphery of eyelet (40). A terminal (44) is mounted on eyelet (40) but electrically isolated from the outer ring of eyelet (40) by electrically insulating material (46). A pressure/force converter in the form of a piston (58) is received in the bore of annular support plate (34) and is provided with a circular force transfer rib (64) adapted to transfer force to an electrically conductive, snap acting disc (50) upon the occurrence of a selected level of pressure in orifice (22). Snap acting disc (50) is disposed on a disc seat (48) formed in eyelet…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.