US3867226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for sealing plastic bags
Assignee: Individual
•
Filing: 1974-05-23
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Granted: 1975-02-18
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Expires: 1994-05-23
Abstract
Abstract A portable hand-held impulse sealer for plastic bags or the like wherein a pair of complementary nichrome-wire heating elements are heated upon actuation of the sealer for a predetermined period of time to bond opposite edges of the open end of a plastic bag together. A spacer rod depending from the sealer head enables sealing to be efficiently accomplished by a single operator by drawing the edges of the bag together with the portions to be bonded positioned between the heating elements of the sealer. The duration of the heat cycle is automatically controlled by a novel solid-state triac timing circuit which can be adjusted to accommodate various kinds and thicknesses of material. A novel method for using the sealer to seal a plastic bag is also disclosed.
Inventors
- 👤 Joseph J Guido
- 👤 James R Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:42
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/38; B29C65/18; B29C65/22; B29C65/221; B29C65/222; B29C65/228; B29C65/78; B29C65/7802; 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; B29C66/80; B29C66/81; B29C66/814; B29C66/8141; B29C66/81411; B29C66/81421; B29C66/81422; B29C66/818; B29C66/8182; B29C66/81821; B29C66/8187; B29C66/81871; B29C66/82; B29C66/822; B29C66/8221; B29C66/8227; B29C66/83; B29C66/832; B29C66/8324; B29C66/83241; B29C66/84; B29C66/841; B29C66/8416; B29C66/861; B29C66/8614; B29C66/87; B29C66/872; B29C66/90; B29C66/94; B29C66/944; B29C66/9441; B65; B65B; B65B51/00; B65B51/10; B65B51/14; B65B51/148; B29C66/828; B29C66/8286; B29C66/91; B29C66/949; B29L; B29L2031/00; B29L2031/712; B29L2031/7128; Y; Y10; Y10T; Y10T156/00; Y10T156/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
204 words
A method for sealing the open end of a plastic bag or the like at one or more locations on its rim to provide an integral carrying handle for the bag, the method utilizing A hand-held impulse-sealing tool comprising a head portion having a pair of heating platens operatively connected to come together in a pressure and heat-applying closed position and further having a spacer depending from one of the platens to engage the rim of the bag opening at a predetermined distance from said closed position of said heating platens, comprising the steps of: grasping the sealer head in one hand; engaging the spacer with the inside of the rim of the bag opening; grasping the rim of the bag with the other hand at a location approximately opposite that of the point of engagement of the spacer; pulling the bag taut between the point of spacer engagement and the point of grasp, thereby drawing opposite sides of the rim together; positioning the taut sides of the rim between the heating platens; applying pressure to the platens to activate the heating elements and accomplish the seal; and removing the sealing head and its depending spacer from the now sealed end of the bag.
Claim 2
Independent Claim
204 words
A method for sealing the open end of a plastic bag or the like at one or more locations on its rim to provide an integral carrying handle for the bag, the method utilizing A hand-held impulse-sealing tool comprising a head portion having a pair of heating platens operatively connected to come together in a pressure and heat-applying closed position and further having a spacer depending from one of the platens to engage the rim of the bag opening at a predetermined distance from said closed position of said heating platens, comprising the steps of: grasping the sealer head in one hand; engaging the spacer with the inside of the rim of the bag opening; grasping the rim of the bag with the other hand at a location approximately opposite that of the point of engagement of the spacer; pulling the bag taut between the point of spacer engagement and the point of grasp, thereby drawing opposite sides of the rim together; positioning the taut sides of the rim between the heating platens; applying pressure to the platens to activate the heating elements and accomplish the seal; and removing the sealing head and its depending spacer from the now sealed end of the bag.
References Cited (Backward Citations)
US3712844A
Cited
US3701699A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |