Patent US3558039A successfully refreshed from Google Patents.
US3558039A
Expired / Lapsed
US
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Carrying bag
Assignee: NOTEWORTHY INDUSTRIES Inc 100 CHURCH STREET AMSTERDAM NEW YORK 12010 A CORP OF NEW YORK
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Filing: 1968-08-07
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Granted: 1971-01-26
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Expires: 1988-08-07
Abstract
Abstract A reusable plastic bag formed of a thin film thermoplastic material and with a combined closure and carrying means also formed of thermoplastic material which is secured to the bag wall at the open mouth thereof. The thin film material of the bag walls, and the thermoplastic material of which the closure and carrying means is formed, may be made of different type thermoplastic materials, which ordinarily do not effectively heat-seal to each other. To effect securing of the carrying and closure means to the bag walls, the carrying and closure means is provided with elongate strip portions, which have integrally molded thereon a large number of pointed projections, or knurls so that when heat is applied along the joining surfaces of the bag walls and the thermoplastic strips, the ends of the pointed projections or knurls are deformed to thereby secure the thin film to the elongate strips.
Inventors
- 👤 John Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:47
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/56; B29C65/60; B29C65/606; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/20; B29C66/21; B29C66/40; B29C66/47; B29C66/50; B29C66/51; B29C66/54; B29C66/80; B29C66/83; B29C66/832; B29C66/8322; B29C66/83221; B65; B65D; B65D33/00; B65D33/16; B65D33/1683; B29C66/70; B29C66/71
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
114 words
A carrier bag of the type having bag walls formed of a thin film thermoplastic material of a first kind and a carrying means formed of a thermoplastic material of a second kind, said thermoplastic material of said first kind having a higher melting point than said thermoplastic material of said second kind, said carrying means comprising at least one elongate strip portion bearing over its surface a myriad of outwardly extending integrally formed projections, said strip portion being adhered to said thin film and with said projections extending into and deforming said thin film, said projections being deformed at their tips to thereby effectively lock said thin film material to said strip portion.
Claim 2
Dependent Claim
114 words
A carrier bag of the type having bag walls formed of a thin film thermoplastic material of a first kind and a carrying means formed of a thermoplastic material of a second kind, said thermoplastic material of said first kind having a higher melting point than said thermoplastic material of said second kind, said carrying means comprising at least one elongate strip portion bearing over its surface a myriad of outwardly extending integrally formed projections, said strip portion being adhered to said thin film and with said projections extending into and deforming said thin film, said projections being deformed at their tips to thereby effectively lock said thin film material to said strip portion.
Claim 3
Dependent Claim
27 words
The carrier bag of claim 1 in which said thermoplastic material of said first kind is polypropylene and said thermoplastic material of said second kind is polyethylene.
Claim 4
Dependent Claim
115 words
A carrier bag of the type having bag walls formed of a thin film thermoplastic material of a first kind and a carrier means formed of a thermoplastic material of a second kind, said thermoplastic material of said first kind having a lower melting temperature than said thermoplastic material of said second kind, said carrying means comprising at least one elongate strip portion bearing over its surface a myriad of outwardly extending integrally formed projections, said strip portion being adhered to said thin film and with said projections piercing said thin film, the tip ends of said projections which pierce said film being deformed to thereby effectively lock said thin film to said strip portion.
Claim 5
Dependent Claim
115 words
A carrier bag of the type having bag walls formed of a thin film thermoplastic material of a first kind and a carrier means formed of a thermoplastic material of a second kind, said thermoplastic material of said first kind having a lower melting temperature than said thermoplastic material of said second kind, said carrying means comprising at least one elongate strip portion bearing over its surface a myriad of outwardly extending integrally formed projections, said strip portion being adhered to said thin film and with said projections piercing said thin film, the tip ends of said projections which pierce said film being deformed to thereby effectively lock said thin film to said strip portion.
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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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |