Universal sash tether clasp and anchoring apparatus for window counterbalancing system
US6338222B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 1999 |
| Grant date | Jan 15, 2002 |
| Priority date | — |
| Expiry date | Oct 29, 2019 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/148
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A window sash tether clasp and anchoring system which is externally mountable for universal use in connection with new or pre-existing conventional double-hung windows, wherein the sash tether clasp is externally mounted on the lower sash of such window and includes an outwardly extending catch having a pair of transversely spaced opposed legs which are designed to engage in the outer diverging walls of a bell shaped anchor that is attached to the end of the balance cord leading from the window balancing system. The externally mountable tether clasp further includes an outwardly extending spring lock which includes an arcuate portion, the extrados surface of which faces the catch and extends within the lower bell mouth of the anchor, thereby holding the anchor in releasable engagement with the catch of the tether clasp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.