Door frame
US6041565A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 1997 |
| Grant date | Mar 28, 2000 |
| Priority date | — |
| Expiry date | May 13, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B3/988
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A door frame having a threshold element (1), a pair of door posts (2) and a lintel element (3) connected together mechanically positively and non-detachably in pluggable manner. Tongues (28, 30, 32, 34) of the lintel element (3) are plugged into slots (37, 38, 39, 40) of the door posts (2) and an additional element (45) is pushed at the door post end onto the tongues. Thereafter, the additional element (45) is moved downwardly, wherein tongues (47, 49, 50, 51) of the additional element detent in slots (29, 31, 33, 35) of the lintel element (3). The upward movement of the additional element (45) is prevented by a tongue (44) that is bent into a recess (42) of the door post (2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.