# US 5,346,757 A · Door mat and a method of manufacture thereof

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- Number: US 5,346,757 A
- Document ID: US5346757A
- Status: Granted
- Kind: A
- Application number: 07/932,496
- Filed: 1992-08-24
- Granted: 1994-09-13
- Earliest claimed: 1992-02-07
- Assignees: Yugengaisya Towa
- Inventors: Akira Nakata
- Web page: https://patentgrep.com/patent/US5346757A

## CPC

- B29D 99/0057: {Producing floor coverings}
- A47L 23/266: {Mats}
- D04H 3/03: at random
- D04H 3/16: with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
- B29L 2031/3017: {Floor coverings}
- D10B 2503/04: Floor or wall coverings; Carpets
- Y10T 156/1023: Surface deformation only [e.g., embossing]
- Y10T 428/23929: Edge feature or configured or discontinuous surface
- Y10T 428/23979: Particular backing structure or composition
- Y10T 428/2922: Nonlinear [e.g., crimped, coiled, etc.]
- Y10T 428/2925: Helical or coiled
- B29D: PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE (making granules B29B9/00; making preforms B29B11/00)
- A47L: DOMESTIC WASHING OR CLEANING (brushes A46B; cleaning quantities of bottles or of other hollow articles of one kind B08B9/00; laundry D06F); SUCTION CLEANERS IN GENERAL (cleaning in general B08)
- D04H: MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL (weaving D03; knitting D04B; braiding D04C; net-making D04G; sewing D05B; tufting D05C; finishing non-woven fabrics D06); FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING {; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION}(non-woven fabrics having an intermediate or external layer of a different kind, e.g. of woven fabric, B32B)
- B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- D10B: INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A door mat comprising an integral mass of loops of synthetic resin monofilaments which includes a surface layer having a decorative pattern on its upper side and a reverse surface layer having its upper side joined to the lower side of said surface layer. The undersigned of the reverse surface layer may be joined to an anti-slip layer, which may be in the form of a lattice layer.

## Claims

### Claim 1

A door mat comprising a three-layer integral mass of mutually fused and bonded loops of synthetic resin monofilaments, said mat comprising:
(a) a bottom anti-slip layer (S) consisting of a lattice shaped arrangement having a plurality of open spaces (19) which open spaces (19) are adapted to receive and contain mud or dirt that is deposited on the top of the mat and which filtered downwardly through the mat,
(b) a top surface layer (A) that has an arrangement of concave depressions in its otherwise planar surface, said depressions presenting a patterned concave-convex design appearance in the top surface layer (A), and
(c) an intermediate layer (L) sandwiched between said bottom anti-slip layer (S) and said top surface layer (A),
wherein the size or shapes of the loops in said three layers being progressively larger from the bottom anti-slip layer through the intermediate layer to the top surface layer, and whereby mud deposited on said top surface (A) passes downwardly through said intermediate layer (L) and into said open spaced (19) of said bottom anti-slip layer (S) to thus insure that the mud is not scattered outside the perimeter of the door mat.