TRANSIT VEHICLE SEAT

• US 3,848,925 A
• Filed: 11/02/1972
• Issued: 11/19/1974
• Est. Priority Date: 11/02/1972
• Status: Expired due to Term

• Current Assignee: Arthur J. Harder Jr
• Original Assignee: Arthur J. Harder Jr
• Inventors: Harder, Arthur J. Jr.
• Primary Examiner(s): Gilliam, Paul R.
• Assistant Examiner(s): Lyddane, William E.
• Application Number:
  US05/303,243
• Time in Patent Office: 747 Days
• Field of Search: 297/440,443,444,452,460,DIG.1,DIG.2 264/135,45
• US Class Current: 297/452.14
• CPC Class Codes: A47C 3/12 with shell-shape seat and back-rest unit, e.g. having arm rests
• CPC Class Codes: A47C 5/12 of plastics, with or without reinforcement
• CPC Class Codes: A47C 7/024 with double seats
• CPC Class Codes: A47C 7/405 with double backrests
• CPC Class Codes: A47C 7/42 of detachable or loose type
• CPC Class Codes: B60N 2/242 Bus seats
• CPC Class Codes: Y10S 297/01 Foam
• CPC Class Codes: Y10S 297/02 Molded

Abstract

A transit seat comprising a monolithic, hollow plastic shell rotary cast into an aesthetically pleasing curved configuration and a foamed plastic material completely filling the interior of the shell to impart improved mechanical properties to the seat compared to those provided by the shell, alone. The seat has cushion sections which are readily removable yet not readily susceptible to pilferage.

Claims

1. A transit seat comprising:

a rotary cast, monolithic, hollow, plastic shell without voids and composed of a thermosetting, plastic material selected from the group consisting of cross linkable linear polyethylene, polycarbonate, polyvinylchloride and nylon;

said shell being rotary cast from powder and having a thickness in the range 1/8 inch - 1/4 inch to permit rotary casting into the desired seat shape without creating voids and to permit accommodation in a rotary casting mold using powder as a starting material;

a foamed polyurethane plastic material completely filling the interior of said shell, said interior being without voids;

said foamed polyurethane having a density in the range 2.0 to 3.5 lbs. per cubic foot;

said hollow plastic shell having a pebbled inner surface including bumps and indentations resulting from the rotary casting of said shell from powder;

said foamed, polyurethane plastic material intimately surrounding said bumps and filling said indentations at said hollow surface;

the combination of said hollow plastic shell and said foamed polyurethane interior having substantially greater strength, resistance to indentation and rigidity than said hollow plastic shell alone;

a plurality of cushion sections;

means removably mounting a first of said cusion sections in a first predetermined position on said shell;

means mounting a second of said cushion sections in a second predetermined position on said shell;

fastener means for securing said second cushion section against removal from said second predetermined position in the absence of a special tool;

said fastener means being hidden from view by said second cushion section and said shell; and

means on said first-recited mounting means and on the second cushion section cooperating to maintain the fIrst cushion section in said first predetermined position and to prevent its removal therefrom so long as the second cushion section is in the second predetermined position.

2. A transit seat comprising:

a seat member having the desired seat shape;

a plurality of cushion sections;

means removably mounting a first of said cushion sections in a first predetermined position on said member;

means mounting a second of said cushion sections in a second predetermined position on said member;

fastener means for securing said second cushion section against removal from said second predetermined position in the absence of a special tool;

said fastener means being hidden from view by said second cushion section and said seat member; and

means on said first-recited mounting means and on the second cushion section cooperating to maintain the first cushion section in said first predetermined position and to prevent its removal therefrom so long as the second cushion section is in the second predetermined position.

3. A transit seat comprising:

a rotary cast, monolithic, hollow, plastic shell composed of a thermosetting, plastic material selected from the group consisting of cross linkable linear polyethylene, polycarbonate, polyvinylchloride and nylon;

a foamed plastic material filling the interior of said shell;

a rigid plate located within the interior of said shell and extending substantially parallel to the sides of the shell portion enclosing said plate;

a plurality of holes in said plate;

the surfaces of said plate and the edges of the holes in said plate being covered with the same plastic material as composes said plastic shell;

said foamed plastic material filling all the space in said shell not occupied by said plate, including the holes in said plate;

said foamed plastic material being in intimate contact with the plastic on the surfaces and hole edges of said plate.