Patent US1958782A successfully refreshed from Google Patents.
US4222276A
Expired / Lapsed
US
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Vacuum packing apparatus
Assignee: DEROGATIS RONALD A
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Filing: 1978-11-02
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Granted: 1980-09-16
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Expires: 1998-11-02
Abstract
Abstract A vacuum packing apparatus utilizes a container lid for attachment to a container having food therein. The lid is provided with a check valve having a hose fitting which provides a source of vacuum to the container. The lid carries an indicating apparatus whose housing is attached to the lid and gaseously communcating to the container associated therewith. A coil spring is mounted in the housing and biases a piston rod outwardly from the housing. The rod of the piston carries indicia suggesting the vacuum level within the container. One embodiment provides a novel valve apparatus suitable for allowing the container to achieve atmospheric pressure upon simple manual manipulation thereof.
Inventors
- 👤 Ronald A. DeRogatis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:23
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/18; B65D81/20; B65D81/2007; B65D81/2038; G; G01; G01L; G01L7/00; G01L7/16
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
231 words
A vacuum packing apparatus comprising a container, a lid, said container and said lid being disposed removably secured to one another, forming an enclosed cavity thereby, a first check valve, said first check valve pneumatically coupled to said cavity and carried by the assembly of said lid and said container, said first check valve being disposed biased into a closed condition when said cavity experiences negative pressure, a housing, said housing being carried by said assembly, said housing having a second cavity therewithin, said second cavity being pneumatically coupled to said cavity, a plunger, said plunger being disposed slideably secured within said second cavity, a rod, said rod being disposed fixedly to said plunger, said housing having an opening, said rod passing through said opening, means to bias said rod and said plunger towards said opening, whereby said plunger and said rod are disposed towards said cavity when said cavity is under the influence of a negative pressure therewithin, a second check valve, said second check valve being disposed fixedly secured to said housing, said second check valve comprising a flexible tube, said flexible tube having the distal-most end thereof disposed in a flattened condition, the other end of said flexible tube being disposed fixedly secured to said housing, adjacent and surrounding an opening therein, said opening of said housing being disposed adjacent said assembly and communicating to said second cavity.
Claim 2
Dependent Claim
231 words
A vacuum packing apparatus comprising a container, a lid, said container and said lid being disposed removably secured to one another, forming an enclosed cavity thereby, a first check valve, said first check valve pneumatically coupled to said cavity and carried by the assembly of said lid and said container, said first check valve being disposed biased into a closed condition when said cavity experiences negative pressure, a housing, said housing being carried by said assembly, said housing having a second cavity therewithin, said second cavity being pneumatically coupled to said cavity, a plunger, said plunger being disposed slideably secured within said second cavity, a rod, said rod being disposed fixedly to said plunger, said housing having an opening, said rod passing through said opening, means to bias said rod and said plunger towards said opening, whereby said plunger and said rod are disposed towards said cavity when said cavity is under the influence of a negative pressure therewithin, a second check valve, said second check valve being disposed fixedly secured to said housing, said second check valve comprising a flexible tube, said flexible tube having the distal-most end thereof disposed in a flattened condition, the other end of said flexible tube being disposed fixedly secured to said housing, adjacent and surrounding an opening therein, said opening of said housing being disposed adjacent said assembly and communicating to said second cavity.
Claim 3
Dependent Claim
44 words
The apparatus as claimed in claim 1 wherein said means to bias comprises a helical spring, one end of said helical spring disposed in touching engagement with said plunger, the other end of said helical spring being disposed in touching engagement with said housing.
Claim 4
Dependent Claim
12 words
The apparatus as claimed in claim 1, wherein said rod carries indicia.
Claim 5
Dependent Claim
33 words
The apparatus as claimed in claim 3, wherein said indicia comprises a plurality of lines, said plurality of lines being disposed in spaced apart annular relationship extending along the length of said rod.
Claim 6
Dependent Claim
15 words
The apparatus as claimed in claim 1, wherein said housing is carried by said lid.
Claim 7
Dependent Claim
17 words
The apparatus as claimed in claim 1, wherein said first check valve is carried by said lid.
Claim 8
Dependent Claim
35 words
The apparatus as claimed in claim 1, wherein said housing comprises a unitary apparatus disposed fixedly secured to said lid, a layer of adhesive, said layer of adhesive disposed intermediate said lid and said housing.
Claim 9
Dependent Claim
44 words
The apparatus as claimed in claim 1, further comprising another flexible tube, said another flexible tube having one end thereof removably secured to said first check valve, the other end of said another flexible tube being disposed coupled to a source of negative pressure.
Claim 10
Dependent Claim
27 words
The apparatus as claimed in claim 1, wherein said housing and said first check valve are each disposed fixedly secured to said lid in spaced apart relationship.
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) | 1983-09-16 | 1984-03-17 | 1984-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-16 | 1988-03-17 | 1988-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-16 | 1992-03-17 | 1992-09-16 | $7700.00 | Window Closed / Lapsed |