US4117875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Containers or carriers for goods
Assignee: Airflex Containers Ltd
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Filing: 1976-08-16
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Granted: 1978-10-03
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Expires: 1996-08-16
Abstract
Abstract A container or carrier for goods of the kind in which the goods are enclosed in a flexible or partly flexible sealed envelope or skin, the container being partially evacuated so that the flexible skin is forced down by atmospheric pressure to embrace and hold goods on a rigid support has suction means which operate continuously and an adjustable bleed orifice open to the atmosphere to admit air into said container so limiting the vacuum to an adjustable predetermined value.
Inventors
- 👤 Christopher Daniel Dowling Hickey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:00
CPC Classifications
B; B65; B65D; B65D19/00; B65D19/38; B65D19/44
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
72 words
A container of the kind having an impermeable envelope or skin which is at least partly flexible and a vacuum suction means for sucking air out of the container wherein the suction means are adapted to be operated continuously, and wherein there is provided an adjustable bleed orifice open to the atmosphere to admit air into a pipe leading into the vacuum suction duct through which air is drawn from the container.
Claim 2
Dependent Claim
72 words
A container of the kind having an impermeable envelope or skin which is at least partly flexible and a vacuum suction means for sucking air out of the container wherein the suction means are adapted to be operated continuously, and wherein there is provided an adjustable bleed orifice open to the atmosphere to admit air into a pipe leading into the vacuum suction duct through which air is drawn from the container.
Claim 3
Dependent Claim
20 words
A container as claimed in claim 1 and provided with a pressure gauge to indicate the pressure within the container.
Claim 4
Dependent Claim
69 words
A container comprising a rigid impermeable base, resilient support means on said base for carrying goods, a flexible impermeable envelope, means for releasably sealing said envelope to said base, a vacuum duct through said base for extracting air from within the envelope, an air extraction pump connected to said duct and a bleed duct with an adjustable orifice open to the atmosphere for admitting air into said vacuum duct.
Claim 5
Dependent Claim
69 words
A container comprising a rigid impermeable base, resilient support means on said base for carrying goods, a flexible impermeable envelope, means for releasably sealing said envelope to said base, a vacuum duct through said base for extracting air from within the envelope, an air extraction pump connected to said duct and a bleed duct with an adjustable orifice open to the atmosphere for admitting air into said vacuum duct.
Claim 6
Dependent Claim
48 words
A container as claimed in claim 3 wherein said adjustable orifice comprises a pair of parallel plates, having corresponding apertures therethrough, sealing means between the plates around the apertures on one plate, said plates being mounted for relative movement to bring the apertures into and out of alignment.
References Cited (Backward Citations)
US3000418A
Cited
GB1191921A
Cited
US3396904A
Cited
US3506237A
Cited
US3783766A
Cited
US3850214A
Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-02 | 1982-04-03 | 1982-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-02 | 1986-04-03 | 1986-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-02 | 1990-04-03 | 1990-10-03 | $7700.00 | Window Closed / Lapsed |