US3717430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for temporarily reducing the volume of a synthetic material container
Assignee: Individual
•
Filing: 1970-07-14
•
Granted: 1973-02-20
•
Expires: 1990-07-14
Abstract
Abstract After filling and before closing of a container of synthetic material, the volume of the container is reduced, by an amount corresponding to the reduction in volume on cooling of the container to reduce or prevent undue pressure in the closed container. Pressure can be applied pneumatically or mechanically to produce the reduction in volume.
Inventors
- 👤 G Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:18
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/48
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
163 words
Mold apparatus for use in connection with a machine for molding, filling and sealing containers, said apparatus comprising: movable lower mold sections mounted for radial movement between open and closed positions for enclosing the lower part of a length of tubing of synthetic material therebetween when closed; means for moving said lower sections between said positions; movable upper mold sections mounted for radial movement relative to said lower sections between open and closed positions for enclosing the upper part of said length of tubing therebetween when closed; means for moving said upper sections between said positions; and separate force applying means carried by at least one of said lower mold sections, said force applying means being operable when the mold sections are in their closed position for applying an inwardly directed force on an area of said lower part of said length of tubing whereby to reduce the inner volume of the latter while the same is enclosed by the closed mold sections.
Claim 2
Dependent Claim
163 words
Mold apparatus for use in connection with a machine for molding, filling and sealing containers, said apparatus comprising: movable lower mold sections mounted for radial movement between open and closed positions for enclosing the lower part of a length of tubing of synthetic material therebetween when closed; means for moving said lower sections between said positions; movable upper mold sections mounted for radial movement relative to said lower sections between open and closed positions for enclosing the upper part of said length of tubing therebetween when closed; means for moving said upper sections between said positions; and separate force applying means carried by at least one of said lower mold sections, said force applying means being operable when the mold sections are in their closed position for applying an inwardly directed force on an area of said lower part of said length of tubing whereby to reduce the inner volume of the latter while the same is enclosed by the closed mold sections.
Claim 3
Dependent Claim
163 words
Mold apparatus for use in connection with a machine for molding, filling and sealing containers, said apparatus comprising: movable lower mold sections mounted for radial movement between open and closed positions for enclosing the lower part of a length of tubing of synthetic material therebetween when closed; means for moving said lower sections between said positions; movable upper mold sections mounted for radial movement relative to said lower sections between open and closed positions for enclosing the upper part of said length of tubing therebetween when closed; means for moving said upper sections between said positions; and separate force applying means carried by at least one of said lower mold sections, said force applying means being operable when the mold sections are in their closed position for applying an inwardly directed force on an area of said lower part of said length of tubing whereby to reduce the inner volume of the latter while the same is enclosed by the closed mold sections.
Claim 4
Dependent Claim
163 words
Mold apparatus for use in connection with a machine for molding, filling and sealing containers, said apparatus comprising: movable lower mold sections mounted for radial movement between open and closed positions for enclosing the lower part of a length of tubing of synthetic material therebetween when closed; means for moving said lower sections between said positions; movable upper mold sections mounted for radial movement relative to said lower sections between open and closed positions for enclosing the upper part of said length of tubing therebetween when closed; means for moving said upper sections between said positions; and separate force applying means carried by at least one of said lower mold sections, said force applying means being operable when the mold sections are in their closed position for applying an inwardly directed force on an area of said lower part of said length of tubing whereby to reduce the inner volume of the latter while the same is enclosed by the closed mold sections.
Claim 5
Dependent Claim
52 words
Apparatus as set forth in claim 1 wherein said means for applying the inwardly directed force comprises a relatively inwardly movable wall portion carried by one of the lower mold sections and means for moving said wall portion toward the length of tubing when the lower sections are in their closed positions.
Claim 6
Dependent Claim
35 words
Apparatus as set forth in claim 2 wherein is included stop means operably connected to said portion of the wall to limit the movement of the latter in a direction toward said length of tubing.
Claim 7
Dependent Claim
13 words
Apparatus as set forth in claim 3 wherein said stop means is adjustable.
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) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |