Locking balance shoe and system for a pivotable window
US7191562B2 · kind B2 · utility
26Cited by
83References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 8, 2005 |
| Grant date | Mar 20, 2007 |
| Priority date | — |
| Expiry date | Apr 8, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B3/5063
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Locking balance shoes and balance systems to be incorporated in pivotable double hung windows include, in one embodiment, a pair of retractable tabs that partially extend through openings within an inverted window balance. In one embodiment of the method of installing such a system, 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.