Patent US4988554A successfully refreshed from Google Patents.
Patent US3147170A successfully refreshed from Google Patents.
US3147170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for tear sealing thermoplastic sheets to cloth
Assignee: Advance Glove Manufacturing Co
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Filing: 1961-10-18
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Granted: 1964-09-01
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Expires: 1981-10-18
Abstract
No abstract record available.
Inventors
- 👤 Marvin A Frenkel
- 👤 Claude H Haney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:40
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/004; B29C66/0042; B29C66/0044; A; A41; A41D; A41D27/00; A41D27/24; A41D27/245; A44; A44B; A44B19/00; A44B19/24; A44B19/34; B29C65/00; B29C65/02; B29C65/04; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/70; B29C66/71; B29C66/712; B29C66/72; B29C66/723; B29C66/73; B29C66/739; B29C66/7392; B29C66/80; B29C66/83; B29C66/832; B29C66/8322; B29C66/82; B29C66/824; B29C66/8242; Y; Y10; Y10T; Y10T156/00; Y10T156/12; Y10T156/1378
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
APPARATUS FOR THE HIGH FREQUENCY TEAR SEALING OF A PIECE OF THERMOPLASTIC DIELECTRIC MATERIAL TO A PIECE OF CLOTH, COMPRISING TWO RELATIVELY MOVABLE ELECTRODES, A SOURCE OF HIGH FREQUENCY VOLTAGE, MEANS TO APPLY SAID VOLTAGE ACROSS SAID ELECTRODES, ONE OF SAID ELECTRODES HAVING A FLAT SURFACE PROVIDED WITH A RESILIENT CUSHIONING PAD COMPRISED OF AT LEAST TWO LAYERS OF POLYVINYL CHLORIDE COATED FABRIC PLACED BETWEEN TWO LAYERS OF POLYETHYLENE TEREPHTHALATE POYESTER FILM FOR SUPPORTING SAID PEICE OF CLOTH, THE OTHER OF SAID ELECTRODES COMPRISING A METALLIC TEAR SEALING DIE AND INCLUDING A DEPENDING SCORING ELEMENT, AND MEANS FOR MOVING SAID ELECTRODES CONVERGENTLY INTO A POSITION WHEREIN SAID PIECE OF THERMOPLASTIC MATERIAL CAN BE DEEPLY IMPRESSED BY SAID DIE INTO SAID PIECE OF CLOTH AND SAID SCORING ELEMENT CAN PERFORATE SAID PIECE OF THERMOPLASTIC MATERIAL ACROSS THE FIBERS OF SAID PIECE OF CLOTH.
Claim 2
Dependent Claim
142 words
APPARATUS FOR THE HIGH FREQUENCY TEAR SEALING OF A PIECE OF THERMOPLASTIC DIELECTRIC MATERIAL TO A PIECE OF CLOTH, COMPRISING TWO RELATIVELY MOVABLE ELECTRODES, A SOURCE OF HIGH FREQUENCY VOLTAGE, MEANS TO APPLY SAID VOLTAGE ACROSS SAID ELECTRODES, ONE OF SAID ELECTRODES HAVING A FLAT SURFACE PROVIDED WITH A RESILIENT CUSHIONING PAD COMPRISED OF AT LEAST TWO LAYERS OF POLYVINYL CHLORIDE COATED FABRIC PLACED BETWEEN TWO LAYERS OF POLYETHYLENE TEREPHTHALATE POYESTER FILM FOR SUPPORTING SAID PEICE OF CLOTH, THE OTHER OF SAID ELECTRODES COMPRISING A METALLIC TEAR SEALING DIE AND INCLUDING A DEPENDING SCORING ELEMENT, AND MEANS FOR MOVING SAID ELECTRODES CONVERGENTLY INTO A POSITION WHEREIN SAID PIECE OF THERMOPLASTIC MATERIAL CAN BE DEEPLY IMPRESSED BY SAID DIE INTO SAID PIECE OF CLOTH AND SAID SCORING ELEMENT CAN PERFORATE SAID PIECE OF THERMOPLASTIC MATERIAL ACROSS THE FIBERS OF SAID PIECE OF CLOTH.
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) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |