Snap lock balance shoe and system for a pivotable window
US6820368B2 · kind B2 · utility
32Cited by
80References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 23, 2003 |
| Grant date | Nov 23, 2004 |
| Priority date | — |
| Expiry date | May 23, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B3/5063
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention relates to a snap lock balance shoe and balance systems to be incorporated in pivotable double hung windows and installation methods of such systems. In one embodiment, the snap lock balance shoe includes a pair of retractable tabs that partially extend through openings within an inverted window balance. In one embodiment of the method, an elongated end of the balance shoe is inserted into a window jamb and then rotated into position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.