Rapid dismount security door
US4671015A · kind A · utility
10Cited by
10References
10Claims
0Family size
Inventors
Key dates
| Filing date | Apr 7, 1986 |
| Grant date | Jun 9, 1987 |
| Priority date | — |
| Expiry date | Apr 7, 2006 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/20
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A quickly demountable security-conscious door having a four-pin engagement with the adjacent door frame and having a plurality of rack and pinion mechanisms for movement of the hinge pin and lock bolt members into engagement positions with respective receptacles located in the door frame member. The door includes weather stripping provisions, operating knob rotational limits, and operating shaft spring assistance and uses Teflon.RTM. or other low-friction materials in appropriate frictional engagement positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.