Ultrasonically welded mat unit and system thereof
US10328638B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2018 |
| Grant date | Jun 25, 2019 |
| Priority date | — |
| Expiry date | Mar 22, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04F2201/022
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A mat unit includes a plurality of gaps defined by a first layer that are in open communication with gaps defined by a second layer so as to permit debris to fall entirely through both gaps to pass completely through the mat unit. The mat unit is part of an omnidirectional mat cleaning system that includes a first direction of travel above the mat unit extending through a door opening defined by a building structure. A different second direction of travel is above the mat unit extending through the door opening or another door opening defined by the building structure. The mat unit is installed on a floor adjacent the door opening. The mat unit cleans shoes regardless of the direction of travel traveled above the mat unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.