Balanced door closing apparatus
US6178698A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1999 |
| Grant date | Jan 30, 2001 |
| Priority date | — |
| Expiry date | Jun 21, 2019 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An improved door closing apparatus (20) is adapted for use with a door frame (21) that comprises an elongated header (22), a sill (23) and a pair of side jambs (24, 25). A door (26) is adapted to be mounted on the frame for pivotal movement about an axis (y--y). The improved comprises a base (29) adapted to be mounted on the header, a closer mechanism (30) mounted on the base and having a first shaft (31) adapted to be oriented perpendicularly with respect to the axis of elongation of the header. The closer mechanism is operatively arranged to selectively urge the first shaft to rotate relative to the closer mechanism. A second shaft (33) is mounted on the base for pivotal movement relative thereto. The second shaft is substantially aligned with the pivotal excess of the door. First and second arms (34, 35) are mounted on the first and second shafts, respectively, for movement therewith. A link (36) pivotally connects the first and second arms that respective locations eccentric to the axes of the first and second shafts. Hence, a force transmitted by the closing mechanism may be transmitted through the first shaft, the first arm, the link, the second arm and the second shaft to ur…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.