US3860375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blow molding apparatus
Assignee: Graham Packaging Plastic Products Inc
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Filing: 1974-03-04
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Granted: 1975-01-14
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Expires: 1994-03-04
Abstract
Abstract A process and apparatus for blow molding hollow plastic articles. The apparatus includes a pair of mold transport assemblies, one positioned on either side of the head of a plastic parison extruder. The mold transport assemblies reciprocate to carry the mold halves under the parison extruder to receive the parison and return to separate blow stations. The device utilizes a cam and cam follower mechanism for opening and closing the mold halves. The apparatus is movable for the purpose of mold setup. After mold setup is complete, the apparatus is mounted on a fixed platform beneath the extruder. The platform is adjustable in all directions to provide alignment of the apparatus with the extruder.
Inventors
- 👤 Jr William G Kinslow
- 👤 Paul A Marchant
- 👤 Robert D Bessier
- 👤 Robert X Hafele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:27
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/56; B29C49/5601; B29C49/5602; B29C49/02; B29C49/04; B29C49/04102; B29C49/28; B29C49/30; B29C49/32; B29C49/5606; B29C49/48; B29C2049/4856; B29C2049/48615; B29C49/561
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
267 words
In an apparatus for extrusion blow molding plastic containers: a. means supplying downwardly extruded, tubular parisons of moldable plastic material at a parison supply station; b. a first means for transversely moving with respect to the axis of said parisons a first pair of blow mold halves to said parison supply station to receive a first parison and to return said parison to a first blow station; c. a second means for transversely moving with respect to the axis of said parisons a second pair of blow mold halves to said parison supply station to receive a second parison and to return said parison to a second blow station; d. means carried by said first and said second means for transversely with respect to the axis of said parisons moving said first and second pair of blow mold halves for opening and closing said blow mold halves; e. a first fixedly mounted blow assembly positioned to engage said first pair of blow mold halves at said first blow station to expand the enclosed parison; f. a second fixedly mounted blow assembly positioned to engage said second pair of blow mold halves at said second blow station to expand the enclosed parison; g. the assemblies and means of subparagraphs b) through f) being mounted on a portable first support means which is separate from second support means on which the means of subparagraph a) is mounted; and h. third support means for supporting said first portable support means, said third support means being adjustable to position said first portable support means in relation to said second support means.
Claim 2
Dependent Claim
267 words
In an apparatus for extrusion blow molding plastic containers: a. means supplying downwardly extruded, tubular parisons of moldable plastic material at a parison supply station; b. a first means for transversely moving with respect to the axis of said parisons a first pair of blow mold halves to said parison supply station to receive a first parison and to return said parison to a first blow station; c. a second means for transversely moving with respect to the axis of said parisons a second pair of blow mold halves to said parison supply station to receive a second parison and to return said parison to a second blow station; d. means carried by said first and said second means for transversely with respect to the axis of said parisons moving said first and second pair of blow mold halves for opening and closing said blow mold halves; e. a first fixedly mounted blow assembly positioned to engage said first pair of blow mold halves at said first blow station to expand the enclosed parison; f. a second fixedly mounted blow assembly positioned to engage said second pair of blow mold halves at said second blow station to expand the enclosed parison; g. the assemblies and means of subparagraphs b) through f) being mounted on a portable first support means which is separate from second support means on which the means of subparagraph a) is mounted; and h. third support means for supporting said first portable support means, said third support means being adjustable to position said first portable support means in relation to said second support means.
Claim 3
Dependent Claim
56 words
In the blow molding apparatus of claim 1 wherein each of said first and second means for transversely moving said first and second pairs of blow molds includes a blow mold transport assembly mounted on a pair of spaced apart tracks attached to said portable first support means whereby said transport assembly may be reciprocally moved.
Claim 4
Dependent Claim
32 words
In the blow molding apparatus of claim 2 wherein the reciprocal movement of each of said blow mold transport assemblies is in a straight line over a substantial portion of their movement.
Claim 5
Dependent Claim
35 words
In the blow molding apparatus of claim 3 wherein said blow mold transport assemblies move in an upwardly directed, curved path over the terminal portion of their travel as they approach the parison supply station.
Claim 6
Dependent Claim
26 words
In the blow molding apparatus of claim 3 wherein each of said transport assemblies includes fluid powered means for opening and closing said blow mold halves.
Claim 7
Dependent Claim
22 words
In the blow molding apparatus of claim 5 wherein said fluid powered means includes means for converting linear motion into rotary motion.
Claim 8
Dependent Claim
14 words
In the blow molding apparatus for claim 6 wherein said fluid is compressed air.
Claim 9
Dependent Claim
25 words
In the blow molding apparatus of claim 6 wherein said fluid powered means includes a cam and at least two cam followers engaging said cam.
Claim 10
Dependent Claim
38 words
In the blow molding apparatus of claim 8 wherein one of said cam followers is coupled to one of said mold halves and the other of said cam followers is coupled to the other of said mold halves.
Claim 11
Dependent Claim
19 words
In the blow molding apparatus of claim 1 wherein said portable first support means is a rigid support frame.
Claim 12
Dependent Claim
23 words
In the blow molding apparatus of claim 10 wherein said tracks are carried by the upper portion of said rigid support frame assembly.
Claim 13
Dependent Claim
30 words
In the blow molding apparatus of claim 10 wherein said support frame is removably attached to said third support means which includes means to raise and lower said support frame.
Claim 14
Dependent Claim
31 words
In the blow molding apparatus of claim 11 wherein a fluid powered reciprocating assembly is mounted On said support frame below said transport assembly and is coupled to said transport assembly.
Claim 15
Dependent Claim
30 words
In the blow molding apparatus of claim 13 wherein said support frame is removably attached to said third support means which includes means to raise and lower said support frame.
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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) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |