Cord tensioning device
US4957152A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 1988 |
| Grant date | Sep 18, 1990 |
| Priority date | — |
| Expiry date | May 2, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T24/3976
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
Disclosed is a device for applying tension to the free ends of a curtain track draw cord that is looped about a pulley at one end of the track. The device consists of a first member containing two parallel channels to acept the free ends of the draw cord and second member, attached to a second pulley block at the opposite end of the curtain track, to which the first member is secured to trap the cords therebetween. The second member contains tubular passageways opposite and perpendicular to the channels in the first member in which are contained coil springs, ball bearings are located between the springs and the draw cords cause the cords to frictionally engage the walls of the channels and maintain tension in the cords lying within the curtain track.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.