Lawn chair pad having fluid, pneumatic and polymeric chambers

• US 5,048,892 A
• Filed: 09/07/1990
• Issued: 09/17/1991
• Est. Priority Date: 09/07/1990
• Status: Expired due to Fees

• Current Assignee: Mart O. Ledbetter
• Original Assignee: Mart O. Ledbetter
• Inventors: Ledbetter, Mart O.
• Primary Examiner(s): Dorner, Kenneth J.
• Assistant Examiner(s): GARDNER, JAMES
• Application Number:
  US07/578,676
• Time in Patent Office: 375 Days
• Field of Search: 297/145, 297/148, 297/153, 297/194, 297/218, 297/219, 297/227, 297/228, 297/411, 297/412, 297/413, 297/414, 297/415, 297/416, 297/419, 297/420, 297/421, 297/422, 297/423 , 297/427, 297/428, 297/429, 297/DIG. 1, 297/DIG. 2, 297/DIG. 8, 297/199, 297/200, 297/201, 297/DIG. 3, 297/397, 267/117, 5/441, 5/443, 5/448, 5/449, 5/450, 5/455, 5/456
• US Class Current: 297/219.1
• CPC Class Codes: A47C 4/54 Inflatable chairs connection of valves to inflatable elastic bodies B60C29/00
• CPC Class Codes: A47C 5/06 Special adaptation of seat upholstery or fabric for attachment to tubular chairs
• CPC Class Codes: Y10S 297/03 Pneumatic

Abstract

An elongate longitudinally aligned cushion member mounted about a selective frame portion of an associated lawn chair to effect desired cushioning relative to the lawn chair structure. The organization is defined by a tubular member, including a coaxially aligned board directed therethrough. A modification of the invention includes an elongate member defined by a serpentine exterior configuration defining parallel ribs, with the member including a pneumatic chamber therewithin and further including an overlying fluid chamber and an underlying chamber formed of a resilient pad-like member.

Claims

1. A lawn chair pad construction, comprising in combination,

a chair defined by a seat tubular framework and a backrest tubular framework, and

an elongate longitudinally aligned cushion member selectively securable to selective portions of the seat tubular framework or the backrest tubular framework, wherein the cushion member includes a longitudinally aligned elongate through-extending bore directed through the cushion member, and

the bore including an elongate wedge-shaped slot diametrically aligned with the bore to permit selective securement of the cushion member to the seat tubular framework or the backrest tubular framework, and

wherein the cushion member includes a forward wall spaced from a rear wall, and a serpentine exterior side wall extending coextensively between the forward wall and rear wall to define an enclosed chamber, the serpentine side wall defining parallel cushion ribs to effect comfort of an individual positioning a body part thereon in deflection of the side wall, and

wherein the forward wall includes an air valve positioned medially of a predetermined height defined by the forward wall to permit selective inflation within the cushion member, and

wherein the enclosed chamber includes a first planar partition wall extending longitudinally and coextensively and interiorly of the enclosed chamber and longitudinally aligned relative to the cushion member, and a second planar partition wall spaced from and parallel the first planar partition wall and longitudinally aligned within the enclosed chamber of the cushion member, and

wherein a first chamber is defined between the first planar partition wall and the side wall, wherein the first chamber includes a predetermined quantity of fluid sealingly contained within the first chamber, and

wherein a second chamber defined between the first planar partition wall and the second planar partition wall is in pneumatic communication with the air valve to permit selective inflation of the second chamber, and

wherein a third chamber is defined between the second partition wall and the side wall, wherein the third chamber is completely filled with a deformable memory retentent polymeric member, wherein the polymeric member is surroundingly positioned about the elongate body slot.