Self-fastening turn button for picture frames and method of installing same
US6125567A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 16, 1999 |
| Grant date | Oct 3, 2000 |
| Priority date | — |
| Expiry date | Jul 16, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F7/18
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A turn button for a picture frame back includes an elongated metal body portion. A pivot boss is provided on the bottom side surface adjacent to a first end. The pivot boss includes an upstanding cylindrical wall with a free upper edge and an aperture therethrough for rotatably securing the turn button to a first portion of a picture frame. The free upper edge of the cylindrical wall serves as a cutting edge and is capable of piercing through a picture frame back. A smooth glide pad is also provided and has a substantially smooth outwardly facing surface for engaging a second portion of the picture frame in order to retain a second portion in a predetermined position relative to the first portion and to avoid excess damage to the picture frame back. A turning knob is also provided to facilitate hand manipulation of the turn button by the user. The use of the cylindrical wall as a cutting edge avoids the use rivets for attachment and the pre-punching of holes into the picture frame back prior to installation of the turn button.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.