US4117306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pouch sealing device
Assignee: Rjr Foods Inc
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Filing: 1977-07-18
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Granted: 1978-09-26
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Expires: 1997-07-18
Abstract
Abstract A sealing bar with longitudinal grooves on the surface produces a corduroy-like surface on the sealed edge of a plastic pouch to provide a means for visible detection of contamination in the seal.
Inventors
- 👤 Jagdish Chandullal Shah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:33
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/24; B29C65/30; B29C65/305; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/43121; B29C66/70; B29C66/73; B29C66/737; B29C66/7373; B29C66/80; B29C66/81; B29C66/814; B29C66/8141; B29C66/81433; B29C66/81435; B29C66/8145; B29C66/81457; B29C66/83; B29C66/832; B29C66/8322; B29C65/82; B29C65/8207; B29C65/8246; B29C65/8253; Y; Y10; Y10T; Y10T156/00; Y10T156/12; Y10T156/1313
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A pouch sealing device comprising: a metallic pressure applying sealing bar having a sealing end with a plurality of longitudinal undulated grooves formed therein and spaced therealong to produce a corduroy-like surface on edges of a pouch to be sealed to enable visible detection of contamination in the seal after a sealing process has been completed; an electric heater means disposed in said sealing bar to heat said sealing end; and a fixed, stationary rubber anvil having a substantially flat surface upon which said edges of said pouch to be sealed is placed and said sealing bar is applied with pressure against said edges of said pouch to be sealed to the extent that said substantially flat surface of said rubber anvil is deformed to assume the shape of said undulated grooves.
Claim 2
Dependent Claim
132 words
A pouch sealing device comprising: a metallic pressure applying sealing bar having a sealing end with a plurality of longitudinal undulated grooves formed therein and spaced therealong to produce a corduroy-like surface on edges of a pouch to be sealed to enable visible detection of contamination in the seal after a sealing process has been completed; an electric heater means disposed in said sealing bar to heat said sealing end; and a fixed, stationary rubber anvil having a substantially flat surface upon which said edges of said pouch to be sealed is placed and said sealing bar is applied with pressure against said edges of said pouch to be sealed to the extent that said substantially flat surface of said rubber anvil is deformed to assume the shape of said undulated grooves.
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) | 1981-09-25 | 1982-03-27 | 1982-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-25 | 1986-03-27 | 1986-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-25 | 1990-03-27 | 1990-09-26 | $7700.00 | Window Closed / Lapsed |