Impact resistant armature
US5611582A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1996 |
| Grant date | Mar 18, 1997 |
| Priority date | — |
| Expiry date | Mar 28, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/11
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An impact resistant armature has an armature plate defining a stepped bore therethrough. The stepped bore defines a shoulder. A mounting assembly having an expanded head portion and a reduced shank portion is positioned in the bore, with the shank portion anchored to the vertical face of a door. The mounting assembly supports the armature assembly in a first position wherein the head portion and the shoulder define an initial gap. Upon impact by an intense force, the armature plate is movable to a second position wherein the head portion and the shoulder engage while the armature retains a bonded relationship with the electromagnet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.