Stair mat

• US 4,321,294 A
• Filed: 11/13/1979
• Issued: 03/23/1982
• Est. Priority Date: 11/13/1978
• Status: Expired due to Term

• Current Assignee: Hiromitsu Naka
• Original Assignee: Hiromitsu Naka
• Inventors: Naka, Hiromitsu
• Primary Examiner(s): Lesmes, George F.
• Assistant Examiner(s): Thomas, Alexander S.
• Application Number:
  US06/094,301
• Time in Patent Office: 861 Days
• Field of Search: 428/40, 428/41, 428/44, 428/45, 428/47, 428/56-58, 428/61, 428/62, 428/68, 428/99, 428/101, 428/121, 428/192, 428/223, 428/212, 428/217, 428/100, 428/218, 428/167, 428/188, 52/179, 52/181, 52/188, 52/822, 52/827
• US Class Current: 428/61
• CPC Class Codes: A47G 27/06 Stair rods; Stair-rod fasteners curtain rods A47H1/02 ; Laying carpeting on stairs tools therefor A47G27/0487
• CPC Class Codes: E04F 11/163 Protecting means for edges or corners
• CPC Class Codes: E04F 11/166 with means for fixing a separate edging strip
• CPC Class Codes: Y10T 428/197 with noncoplanar reinforcement
• CPC Class Codes: Y10T 428/198 Pile or nap surface sheets connected
• CPC Class Codes: Y10T 428/24017 Hook or barb
• CPC Class Codes: Y10T 428/2457 Parallel ribs and/or grooves
• CPC Class Codes: Y10T 428/24744 Longitudinal or transverse tubular cavity or cell
• CPC Class Codes: Y10T 428/24942 including components having same physical characteristic in differing degree
• CPC Class Codes: Y10T 428/24983 Hardness
• CPC Class Codes: Y10T 428/24992 Density or compression of components

Abstract

A stair mat is installed on the stairs in a manner as an edge cushion cover of flexible synthetic resin and a tread mat are adapted to the stairs, being adjacent each other, by the use of a connecting base sheet member having stiffness.

The connecting base sheet member is provided with a hook-shaped rib or a plurality of thorns, and the edge cushion cover is provided with a catching groove or a flexible connecting layer corresponding to the hook-shaped rib or a plurality of thorns on the under surface.

Claims

1. A stair mat comprising:

an edge cushioning cover having an L-shaped cross-section adapted to cover the forward edge of a step, including a main body adapted to extend across the front of a step with a non-skid top surface and having at least one catching groove at its under surface and a skirt extending vertically downward from the main body portion and adapted to cover a riser of a step, said L-shaped edge cushioning cover having an upper layer made of a flexible synthetic resin and a lower layer made of a rigid synthetic resin;

a connecting base sheet member adapted to be fixed on the tread of a step and having at least one hook-shaped rib at the forward edge thereof, said rib or ribs being fitted into the catching groove or grooves of the main body of the L-shaped edge cushioning cover; and

a tread mat secured at the upper surface of the connecting base sheet member, behind the edge cushioning cover, said base sheet member and tread mat being connected to the edge cushioning cover by means of the interlocking arrangement of said rib or ribs of the base sheet member being accommodated into said groove or grooves of the edge cushioning cover.

2. A stair mat as claimed in claim 1, in which the edge cushioning cover is provided with a longitudinal hollow portion between the said upper surface and the lower surface resin layers.

3. A stair mat as claimed in claim 1, in which the non-skid top surface portion is serrated.

4. A stair mat as claimed in claim 1, in which the main body of the edge cushioning cover has two parallel catching grooves extended in the longitudinal direction on the under surface thereof, and the connecting base sheet member is provided with a plurality of parallel bent hook-shaped ribs accommodated in the catching grooves of the edge cushioning cover.