Corner locking carrier shoe for tilt sash
US6032417A · kind A · utility
32Cited by
11References
76Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 19, 1997 |
| Grant date | Mar 7, 2000 |
| Priority date | — |
| Expiry date | Aug 19, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05D15/22
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A tilt sash counterbalance system has a carrier shoe with a locking cam that moves a locking component to a corner-to-corner locking position within a shoe channel. This is done by moving the locking component to a locked position where the locking component simultaneously increases both the width and the thickness of the carrier shoe. This presses the locking component into one inside corner of the shoe channel while pressing an opposite edge of the carrier shoe in a diagonally opposite direction against a diagonally opposite inside corner of the shoe channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.