US3788933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for heat sealing the overlapping end portions of an elongated thermoplastic strapping band
Assignee: Ikegai Corp
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Filing: 1971-09-23
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Granted: 1974-01-29
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Expires: 1991-09-23
Abstract
Abstract A welding apparatus applicable to a packing machine for use in strapping packages with a thermoplastic band, which comprises a movable heat plate provided with plural blades disposed parallel to the direction of strain of the band, which plate is moved against overlapped portion of the plastic bands to be welded, said blades as they penetrate one of the overlapping bands and eat into the other one, and means for pressing together to thereby join said bands.
Inventors
- 👤 S Nakazawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:08
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/01; B29C66/05; B29C66/20; B29C66/21; B29C65/00; B29C65/02; B29C65/18; B29C65/74; B29C65/743; B29C65/7437; B29C66/03; B29C66/032; B29C66/0324; B29C66/03241; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/23; B29C66/232; B29C66/40; B29C66/41; B29C66/43; B29C66/432; B29C66/4322; B29C66/4324; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/82; B29C66/822; B29C66/8221; B29C66/8226; B29C66/83; B29C66/832; B29C66/8322; B65; B65B; B65B13/00; B65B13/18; B65B13/24; B65B13/32; B29C66/71; B29K; B29K2023/00; B29K2023/10; B29K2023/12; B29L; B29L2031/00; B29L2031/727; B29L2031/7276; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1056; Y10T156/1057; Y10T156/12; Y10T156/1304; Y10T428/00; Y10T428/19
Claims Analysis
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References Cited (Backward Citations)
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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) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |