Carpet trimmer
US6421923B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 31, 2001 |
| Grant date | Jul 23, 2002 |
| Priority date | — |
| Expiry date | Jul 31, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB26B29/06
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A carpet trimmer comprises a base plate with first slots. Underlying the base plate is a post holder with upstanding threaded posts protruding through the first slots of the base plate. Overlying the base plate is a blade holder that engages the posts for movement with the post holder. A wall guide is formed from the blade holder by bending downwardly in spaced relation to the working edge of the base plate. A first indent is formed on the bottom surface of the blade holder at the junction between the wall guide and the blade holder. The blade holder has a first blade holding recess with a second slot exposed when a blade is in place. A notch on a blade-supporting strip attached on the inner wall of the wall guide, the inner wall, and the first indent forms a second blade holding recess. The first and second recesses define a blade holding area that has a length longer than the blade's length. A blade- retaining member has a second indent which seats into the second slot when securing the blade over the blade holder. Suitable nuts on the posts lock the retaining members over the blades.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.