Access opening closure device
US4970836A · kind A · utility
23Cited by
4References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 30, 1989 |
| Grant date | Nov 20, 1990 |
| Priority date | — |
| Expiry date | Jun 30, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B2/10
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A closure device for access openings having a face plate attractively complementing the surface in which said opening occurs and manufally driven spring biased latching mechanisms for securing the device in closing relationship to such opening. Optional gasket means and insulative batt enhance the versatility of the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.