Apparatus for sealing plastic bags
Abstract
Abstract A portable hand-held impulse sealer for plastic bags or the like wherein a pair of complementary Nichromewire 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
- 👤 J Guido
- 👤 J Anderson
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-01 | 1977-12-31 | 1978-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-01 | 1981-12-31 | 1982-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-01 | 1985-12-31 | 1986-07-02 | $7700.00 | Window Closed / Lapsed |