Friction brake for a vertical sliding window
US4551881A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 23, 1984 |
| Grant date | Nov 12, 1985 |
| Priority date | — |
| Expiry date | Apr 23, 2004 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/148
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A plastic liner is attached to the jamb of a vertical sliding window and has a continuous "U" channel with the channel opening facing the window opening and a block member slidingly engaged in the channel adapted to be coupled to the window sash and to one end of an elongated coil spring located in the channel which is attached at its other end to the liner. Primary frictional braking force is provided by a wing member inside the channel pushing against the block member so it rubs against a wall of the channel. The block member rides over a "T" shaped rail in the channel and carries a set screw which can be reached through the channel opening to be threaded through the block member into contact with the top surface of the rail member for manually adjusting the frictional braking force on the block member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.