US3660189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closed cell structure and methods and apparatus for its manufacture
Assignee: CONSTANTINE T TROY
•
Filing: 1969-04-28
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Granted: 1972-05-02
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Expires: 1989-04-28
Abstract
Abstract Cellular cushioning material is prepared by sealing an elastic substance within cells that are formed between two flexible films. When the elastic material is a gas, means may be provided to charge the cells at superatmospheric pressure to achieve full inflation of the cells and maximum efficiency of the cushioning material.
Inventors
- 👤 Constantine T Troy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:43
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B29; B29C; B29C51/00; B29C51/18; B29C51/20; B29C51/22; B29C51/225; B29C51/26; B29C51/266; B29C51/267; B29C65/00; B29C65/02; B29C65/18; B29C65/22; B29C65/221; B29C65/224; B29C65/228; B29C65/229; B29C65/24; B29C65/245; B29C65/48; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/13; B29C66/131; B29C66/1312; B29C66/133; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/432; B29C66/4322; B29C66/433; B29C66/436; B29C66/439; B29C66/50; B29C66/51; B29C66/54; B29C66/80; B29C66/81; B29C66/814; B29C66/8141; B29C66/81411; B29C66/81415; B29C66/81419; B29C66/81427; B29C66/81431; B29C66/818; B29C66/8181; B29C66/8187; B29C66/81871; B29C66/82; B29C66/824; B29C66/8242; B29C66/83; B29C66/834; B29C66/8341; B29C66/83411; B29C66/83415; B29C66/83421; B29C66/83423; B29C66/83431; B29C66/83433; B29C66/8351; B29C66/83511; B29C66/83513; B29C66/83531; B29C66/83533; B29C66/84; B29C66/843; B29C66/8432; B31; B31D; B31D5/00; B31D5/0039; B31D5/0073; B32B3/00; B32B3/02; B32B3/04; B32B3/06; B32B3/26; B32B3/28; B32B38/00; B32B38/06; B29C65/30; B29C65/305; B29C65/4805; B29C65/481; B29C65/4815; B29C66/70; B29C66/71; B29C66/72; B29C66/723; B29C66/812; B29C66/8122; B29L; B29L2022/00; B29L2022/02; B29L2031/00; B29L2031/712; B29L2031/7138; B31D2205/00; B31D2205/0005; B31D2205/0011; B31D2205/0017; B32B2310/00; B32B2310/04; B32B2310/0445; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1084; Y10T156/1087; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24661
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
221 words
A method for the manufacture of lightweight, resilient closed-cell cushioning material comprising the sequential steps of: first fabricating a preform structure by: continuously feeding two sheets comprised of polymeric materials in superimposed relationship to each other; forming cross seals by sealing the two sheets together along spaced parallel lines extending substantially across the width of the sheets; forming a first marginal seal by sealing the two sheets to each other along a line adjacent one end of the cross seals and parallel to and adjacent one side of the sheets; forming a second marginal seal by sealing the sheets to each other along a line spaced away from the other end of the cross seals and parallel to and adjacent the other side of the sheets; and second, forming a sealed, inflated cellular structure by: introducing an inflation device between the second marginal seal and said other end of the cross seals; introducing gases under pressure by such inflation device into the unsealed spaces between the two sheets; continuously advancing the sheets with respect to the inflation device in their elongated direction and slitting the second marginal seal; and forming a plurality of long seals by sealing the sheets together along spaced parallel lines extending lengthwise of the sheets; whereby a plurality of closed cells containing gas under pressure is formed.
Claim 2
Independent Claim
221 words
A method for the manufacture of lightweight, resilient closed-cell cushioning material comprising the sequential steps of: first fabricating a preform structure by: continuously feeding two sheets comprised of polymeric materials in superimposed relationship to each other; forming cross seals by sealing the two sheets together along spaced parallel lines extending substantially across the width of the sheets; forming a first marginal seal by sealing the two sheets to each other along a line adjacent one end of the cross seals and parallel to and adjacent one side of the sheets; forming a second marginal seal by sealing the sheets to each other along a line spaced away from the other end of the cross seals and parallel to and adjacent the other side of the sheets; and second, forming a sealed, inflated cellular structure by: introducing an inflation device between the second marginal seal and said other end of the cross seals; introducing gases under pressure by such inflation device into the unsealed spaces between the two sheets; continuously advancing the sheets with respect to the inflation device in their elongated direction and slitting the second marginal seal; and forming a plurality of long seals by sealing the sheets together along spaced parallel lines extending lengthwise of the sheets; whereby a plurality of closed cells containing gas under pressure is formed.
Claim 3
Dependent Claim
27 words
A method according to claim 1 wherein the first and second marginal seals are formed by initially manufacturing the elongated sheets in the form of a tube.
Claim 4
Dependent Claim
26 words
A method according to claim 1 wherein the general shape of each cell is formed prior to inflation by embossing a pattern on the superimposed sheets.
Claim 5
Dependent Claim
48 words
A method according to claim 1 including the steps of winding the superimposed sheets onto a roll after the cross seals and first and second marginal seals have been formed and unwinding the sheets from the roll prior to inflation and formation of the plurality of long seals.
Claim 6
Dependent Claim
19 words
A method according to claim 3 wherein the pattern is embossed below the heat sealing temperatures of the film.
Claim 7
Dependent Claim
25 words
A method according to claim 1 wherein the resiliency of the cellular structure is selectively altered by adjusting the pressure of the gases under pressure.
References Cited (Backward Citations)
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US2566533A
Cited
US2670501A
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GB747105A
Cited
GB908579A
Cited
US3011930A
Cited
US3244571A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |