US3789785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sterilisation of tins
Assignee: JJ Carnaud and Forges de Basse Indre SA
•
Filing: 1971-09-17
•
Granted: 1974-02-05
•
Expires: 1991-09-17
Abstract
Abstract To prevent bursting of a can due to the vacuum formed therein on cooling after sterilisation a part of the can, generally an end thereof, is subjected to a permanent deformation, effected before the can is fully cooled, which reduces the internal volume of the can.
Inventors
- 👤 M Petit
- 👤 G Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:32
CPC Classifications
B; B65; B65B; B65B61/00; B65B61/24; B21; B21D; B21D51/00; B21D51/16; B21D51/26
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
158 words
A volume controlling apparatus for use in conjunction with an apparatus for sterilizing products within a sealed can having at least one deformable end to deform the deformable end during a cooling process following sterilisation to control internal pressure within the can, said volume controlling apparatus comprising first and second can engaging members, mounting means for mounting said members in opposed spaced relation and for relative axial movement to clamp a can therebetween, at least one of said members having a portion of a configuration for directly engaging and applying pressure to the deformable can end to deform the deformable end as the associated can and product therein cools, and said mounting means including a pressure limiting means for controllably limiting the pressure applied by said member portion to the can end, said pressure limiting means being separate and apart from that portion of said mounting means which effect movement of said member to a can clamping position.
Claim 2
Dependent Claim
158 words
A volume controlling apparatus for use in conjunction with an apparatus for sterilizing products within a sealed can having at least one deformable end to deform the deformable end during a cooling process following sterilisation to control internal pressure within the can, said volume controlling apparatus comprising first and second can engaging members, mounting means for mounting said members in opposed spaced relation and for relative axial movement to clamp a can therebetween, at least one of said members having a portion of a configuration for directly engaging and applying pressure to the deformable can end to deform the deformable end as the associated can and product therein cools, and said mounting means including a pressure limiting means for controllably limiting the pressure applied by said member portion to the can end, said pressure limiting means being separate and apart from that portion of said mounting means which effect movement of said member to a can clamping position.
Claim 3
Dependent Claim
27 words
The volume controlling apparatus of claim 1 wherein said one member portion is of a configuration for opening out a selected corrugation in an associated can end.
Claim 4
Dependent Claim
54 words
The volume controlling apparatus of claim 1 wherein said one member portion is of a configuration for engaging a preselected portion only of a can end, and the associated one of said members having guide means separate and apart from said member portion for aligning said member portion with the preselected can end portion.
Claim 5
Dependent Claim
19 words
The volume controlling apparatus of claim 1 wherein said one member portion is in the Form of a punch.
Claim 6
Dependent Claim
52 words
The volume controlling apparatus of claim 1 wherein said one member portion is in the form of a punch having axially stepped punch element means for sequentially engaging a can end to sequentially open out corrugations formed therein and effect a sequential controlled deformation of a can end into a respective can.
Claim 7
Dependent Claim
18 words
The volume controlling apparatus of claim 1 wherein said pressure limiting means directly supports one of said members.
Claim 8
Dependent Claim
28 words
The volume controlling apparatus of claim 1 wherein said one member portion is in the form of a punch, and said pressure limiting means directly supports said punch.
Claim 9
Dependent Claim
49 words
The volume controlling apparatus of claim 1 wherein said one member has a groove surrounding said member portion for receiving a peripheral end portion of a can, and said groove being of a predetermined depth for limiting the relative end deforming movement between said member portion and a can.
Claim 10
Dependent Claim
30 words
The volume controlling apparatus of claim 1 wherein said member portion is of an annular configuration to thus leave free of engagement a central part of an associated can end.
Claim 11
Dependent Claim
25 words
The volume controlling apparatus of claim 1 wherein said member portion is of a configuration to match the opposed surface of a respective can end.
Claim 12
Dependent Claim
38 words
The volume controlling apparatus of claim 1 wherein at least said one member has guide means for engaging the periphery of a can and centering the same, said guide means being in the form of a frusto-conical surface.
Claim 13
Dependent Claim
34 words
The volume controlling apparatus of claim 1 wherein said one member portion of in the form of a punch having a plurality of concentric annular pressure applying rings displayed axially relative to each other.
Claim 14
Dependent Claim
44 words
The volume controlling apparatus of claim 1 wherein said apparatus is particularly adapted for use with a can having an integral end joined to a body by a radius, and said one member has a seat matching the contour of the intended can radius.
Claim 15
Dependent Claim
31 words
The volume controlling apparatus of claim 1 wherein said member portion is mounted separate and apart from the remainder of said one member and is supported by said pressure limiting device.
Claim 16
Dependent Claim
73 words
The volume controlling apparatus of claim 1 wherein said mounting means include two pressure applying members mounted for relative pressure applying movement towards one another, one of said can engaging members being mounted on one of said pressure applying members for movement together therewith, said pressure limiting means being carried by the other of said pressure applying members, and the other of said can engaging members being carried by said pressure limiting means.
Claim 17
Dependent Claim
71 words
The volume controlling apparatus of claim 1 wherein there is a plurality of said volume controlling apparatus, a shaft having an axis, a pair of supports mounted for rotation about the shaft axis, a plurality of apparatus being carried by said supports in circumferentially spaced relation about said axis, guide means for supplying cans in sequence to said plurality of apparatus, and means for operating said plurality of apparatus in succession.
Claim 18
Dependent Claim
32 words
the volume controlling apparatus of claim 16 wherein said plurality of apparatus is located in a cooling path of sterilised cans at a location wherein the cans have cooled to predetermined temperature.
References Cited (Backward Citations)
CA740699A
Cited
US1162520A
Cited
US1622558A
Cited
US2013654A
Cited
US1918004A
Cited
US2082177A
Cited
US2258800A
Cited
US2258801A
Cited
US3117873A
Cited
US3270544A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |