US4445240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid filled compartmented cushion
Assignee: Ideal Comfort Inc
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Filing: 1978-08-07
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Granted: 1984-05-01
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Expires: 1998-08-07
Abstract
Abstract There is disclosed a cushion of flexible plastic sheet material adapted to be filled with water or other liquid wherein the interior space is divided into at least two compartments, one of which is annular, the shape being particularly adapted to provide a cushion with firm, comfortable support while at the same time being simple and inexpensive to manufacture. Separate filler openings are provided for the two compartments which permits their being filled independently, to different degrees if desired. The cushion is preferably provided with a textile fabric cover which is removable for storage and shipping.
Inventors
- 👤 John Voorhees
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:01
CPC Classifications
A; A47; A47C; A47C4/00; A47C4/54; A47C27/00; A47C27/08; A47C27/085; A47C27/10
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
134 words
A covered cushion having at least two compartments containing a liquid comprising two pieces of flexible plastic sheet material of substantially the same shape, said pieces being sealed together around their periphery to form a liquid-tight compartment and further having a joining seal in the form of a closed path in the central portion thereof dividing said compartment into two isolated portions, the first portion being centrally located in said cushion and the second portion completely surrounding the first portion, a filler port with a closure therefor in one of said pieces of sheet material placed to give access to the said first portion of said compartment, another filler port with a closure therefor in one of said pieces of sheet material placed to give access to the said second portion of said compartment.
Claim 2
Dependent Claim
134 words
A covered cushion having at least two compartments containing a liquid comprising two pieces of flexible plastic sheet material of substantially the same shape, said pieces being sealed together around their periphery to form a liquid-tight compartment and further having a joining seal in the form of a closed path in the central portion thereof dividing said compartment into two isolated portions, the first portion being centrally located in said cushion and the second portion completely surrounding the first portion, a filler port with a closure therefor in one of said pieces of sheet material placed to give access to the said first portion of said compartment, another filler port with a closure therefor in one of said pieces of sheet material placed to give access to the said second portion of said compartment.
Claim 3
Dependent Claim
41 words
A cushion as claimed in claim 1 wherein the said second portion of said liquid-tight compartment defined by said seal in the form of a closed path has a transverse dimension of approximately one-half the overall transverse dimension of said cushion.
Claim 4
Dependent Claim
17 words
A cushion as claimed in claim 1 wherein said plastic sheet is a polyvinyl chloride plastic sheet.
Claim 5
Dependent Claim
19 words
A cushion as claimed in claim 1 wherein said pieces of plastic sheet material are substantially square in shape.
Claim 6
Dependent Claim
21 words
A cushion as claimed in claim 1 wherein the thickness of said flexible plastic sheet is from 0.01 to 0.03 inches.
Claim 7
Dependent Claim
24 words
A cushion as claimed in claim 1 further including a textile fabric cover enclosing and covering said two pieces of flexible plastic sheet material.
Claim 8
Dependent Claim
133 words
A cushion having at least two compartments for containing a liquid comprising two pieces of flexible plastic sheet material of substantially the same shape, said pieces being sealed together around their periphery to form a liquid-tight compartment and further having a joining seal in the form of a closed path in the central portion thereof dividing said compartment into two isolated portions, the first portion being centrally located in said cushion and the second portion completely surrounding the first portion, a quantity of liquid having a volume of from one-tenth to one-half the maximum volume of said first portion of said compartment in said first portion, and a quantity of liquid having a volume of from one-tenth to one-half the maximum volume of said second portion of said compartment in said second portion.
Claim 9
Dependent Claim
133 words
A cushion having at least two compartments for containing a liquid comprising two pieces of flexible plastic sheet material of substantially the same shape, said pieces being sealed together around their periphery to form a liquid-tight compartment and further having a joining seal in the form of a closed path in the central portion thereof dividing said compartment into two isolated portions, the first portion being centrally located in said cushion and the second portion completely surrounding the first portion, a quantity of liquid having a volume of from one-tenth to one-half the maximum volume of said first portion of said compartment in said first portion, and a quantity of liquid having a volume of from one-tenth to one-half the maximum volume of said second portion of said compartment in said second portion.
Claim 10
Dependent Claim
41 words
A cushion as claimed in claim 7 wherein the said second portion of said liquid-tight compartment defined by said seal in the form of a closed path has a transverse dimension of approximately one-half the overall transverse dimension of said cushion.
Claim 11
Dependent Claim
17 words
A cushion as claimed in claim 7 wherein said plastic sheet is a polyvinyl chloride plastic sheet.
Claim 12
Dependent Claim
19 words
A cushion as claimed in claim 7 wherein said pieces of plastic sheet material are substantially square in shape.
Claim 13
Dependent Claim
21 words
A cushion as claimed in claim 7 wherein the thickness of said flexible plastic sheet is from 0.01 to 0.03 inches.
Claim 14
Dependent Claim
24 words
A cushion as claimed in claim 7 further including a textile fabric cover enclosing and covering said two pieces of flexible plastic sheet material.
Claim 15
Dependent Claim
147 words
A covered cushion having at least two compartments for containing a liquid comprising two pieces of flexible polyvinyl chloride plastic sheet material of substantially the same shape, each having a thickness of from 0.01 to 0.03 inches, said pieces being sealed together around their periphery to form a liquid-tight compartment and further having a joining seal in the form of a closed path in the central portion thereof dividing said compartment into two isolated portions, the first portion being centrally located in said cushion and the second portion completely surrounding the first portion, a filler port with a closure therefor in one of said pieces of sheet material placed to give access to the said first portion of said compartment, another filler port with a closure therefor in one of said pieces of sheet material placed to give access to the said second portion of said compartment.
Claim 16
Dependent Claim
147 words
A covered cushion having at least two compartments for containing a liquid comprising two pieces of flexible polyvinyl chloride plastic sheet material of substantially the same shape, each having a thickness of from 0.01 to 0.03 inches, said pieces being sealed together around their periphery to form a liquid-tight compartment and further having a joining seal in the form of a closed path in the central portion thereof dividing said compartment into two isolated portions, the first portion being centrally located in said cushion and the second portion completely surrounding the first portion, a filler port with a closure therefor in one of said pieces of sheet material placed to give access to the said first portion of said compartment, another filler port with a closure therefor in one of said pieces of sheet material placed to give access to the said second portion of said compartment.
Claim 17
Dependent Claim
19 words
A cushion as claimed in claim 13 wherein said pieces of plastic sheet material are substantially square in shape.
Claim 18
Dependent Claim
23 words
Apparatus as claimed in claim 14 further including the textile fabric cover enclosing and covering said two pieces of flexible plastic sheet material.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-01 | 1987-10-31 | 1988-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-01 | 1991-10-31 | 1992-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-01 | 1995-10-31 | 1996-05-01 | $7700.00 | Window Closed / Lapsed |