Hot bearing warning bolt
US4818119A · kind A · utility
26Cited by
12References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 3, 1987 |
| Grant date | Apr 4, 1989 |
| Priority date | — |
| Expiry date | Aug 3, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2326/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A temperature warning device for monitoring the temperature of an article and for providing a dependable signal that a preselected temperature has been reached. The device includes an axially extending bore into which a heat responsive element, a driver, and a sensing indicator are arranged. The bore is normally sealed by a closure plug to prevent failure due to contaminants. Upon reaching a preselected temperature the element exerts force against the driver which in turn forcibly removes the closure plug, exposing the indicator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.