US3857749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joined carpet unit
Assignee: Sanwa Kako Co Ltd
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Filing: 1974-02-19
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Granted: 1974-12-31
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Expires: 1994-02-19
Abstract
Abstract A jointing carpet unit for joining similar units and in the form of plate wherein a processed fiber material such as cloth, felt and the like is laminated onto the surface of a base plate of foamed polymer consisting mainly of ethylene, such as foamed polyethylene and wherein a plurality of concavities are provided on the side surface of the laminted plate and a plurality of convexities in such form that may fit in concavities which are provided on the opposite side surface of an opposing unit.
Inventors
- 👤 I Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:58
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/245; A; A47; A47G; A47G27/00; A47G27/02; A47G27/0293; B32B3/00; B32B3/02; B32B3/06; B32B3/10; B32B5/18; B32B7/00; B32B7/04; B32B7/12; E; E04; E04F; E04F15/00; E04F15/02; E04F15/10; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/025; B32B2305/00; B32B2305/10; B32B2305/18; B32B2471/00; B32B2471/02; Y; Y10; Y10T; Y10T428/00; Y10T428/17; Y10T428/249921; Y10T428/249953; Y10T428/31504; Y10T428/31855
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
64 words
A CARPET UNIT IN THE FORM OF PLATE COMPOSED OF A PROCESSED FIBER MATERIAL BONDED ON THE SURFACE OF A BASE PLATE OF FOAMED MATERIAL COMPOSED OF A POLYMER CONSISTING MAINLY OF ETHYLENE AND WHEREIN A PLURALITY OF CONCAVITES ARE FORMED ON A SIDE SURFACE OF SAID PLATE AND A PLURALITY OF ALTERNATING CONVEXITIES ARE LOCATED THEREON SUCH THAT THE SAID CARPET UNIT IS
Claim 2
Dependent Claim
64 words
A CARPET UNIT IN THE FORM OF PLATE COMPOSED OF A PROCESSED FIBER MATERIAL BONDED ON THE SURFACE OF A BASE PLATE OF FOAMED MATERIAL COMPOSED OF A POLYMER CONSISTING MAINLY OF ETHYLENE AND WHEREIN A PLURALITY OF CONCAVITES ARE FORMED ON A SIDE SURFACE OF SAID PLATE AND A PLURALITY OF ALTERNATING CONVEXITIES ARE LOCATED THEREON SUCH THAT THE SAID CARPET UNIT IS
Claim 3
Dependent Claim
97 words
A carpet unit in the form of plate composed of a processed fiber material bonded on the surface of a base plate of foamed material of polymer consisting mainly of ethylene, said material having a density of 0.05 - 0.08 g/cm3 and a 25% compression hardness of 0.65 - 1.1 kg/cm2, and wherein a plurality of concavities are formed on the side surface of said plate and a plurality of alternating convexities are located thereon such that the said carpet unit is adapted to be joined with a plurality of said units with corresponding concavities and convexities.
Claim 4
Dependent Claim
97 words
A carpet unit in the form of plate composed of a processed fiber material bonded on the surface of a base plate of foamed material of polymer consisting mainly of ethylene, said material having a density of 0.05 - 0.08 g/cm3 and a 25% compression hardness of 0.65 - 1.1 kg/cm2, and wherein a plurality of concavities are formed on the side surface of said plate and a plurality of alternating convexities are located thereon such that the said carpet unit is adapted to be joined with a plurality of said units with corresponding concavities and convexities.
Claim 5
Dependent Claim
20 words
A carpet unit according to claim 2, wherein said foamed material of polymer consisting mainly of ethylene is polyethylene foam.
Claim 6
Dependent Claim
14 words
A carpet unit according to claim 3, wherein said processed fiber material is felt.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |