Patent US3799722A successfully refreshed from Google Patents.
US3799722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple injection blow molding machine
Assignee: Jomar Industries Inc
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Filing: 1972-06-06
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Granted: 1974-03-26
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Expires: 1992-06-06
Abstract
Abstract In an injection blow molding machine wherein an elevatable and rotatable turret that carries distinct sets of parison pins on its side faces is surrounded at angularly spaced points by parison mold stations, blow mold stations and ejection stations, the parison clamps at the parison mold stations are mechanically linked together for equalized operation and the turret is so connected to the linkage that it is lifted with the synchronized raising movement of the movable upper halves of the separable parison molds but only one-half the vertical distance thereof whereby the parison pins are equidistant of the part line between the partible halves of the parison molds and also the blow molds when the molds are open so that the pins clear the mold halves as the turret is indexed around the stations.
Inventors
- 👤 J Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:20
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/02; B29C49/06; B29C49/061; B29C49/062; B29C49/063; B29C2049/023
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
138 words
In an injection blow molding machine having plural operating stations, a turret rotatable and elevatable in respect to said plural stations and carrying parison pins and surrounded by said operating stations including an opposing pair of parison mold stations comprised of separable parison molds having fixed lower mold halves and upper mold halves vertically movable along an axis parallel to the rotatable axis of the turret; the improvement comprising means clamping the upper mold halves of the parison molds with equal pressure onto the lower mold halves and means actuated by said equalized clamping means for elevating the turret in synchronous movement with the upper mold halves and at a distance one-half the distance of the upper mold halves so that the pins carried by the turret are disposed equidistant with the part line between the mold halves.
Claim 2
Dependent Claim
138 words
In an injection blow molding machine having plural operating stations, a turret rotatable and elevatable in respect to said plural stations and carrying parison pins and surrounded by said operating stations including an opposing pair of parison mold stations comprised of separable parison molds having fixed lower mold halves and upper mold halves vertically movable along an axis parallel to the rotatable axis of the turret; the improvement comprising means clamping the upper mold halves of the parison molds with equal pressure onto the lower mold halves and means actuated by said equalized clamping means for elevating the turret in synchronous movement with the upper mold halves and at a distance one-half the distance of the upper mold halves so that the pins carried by the turret are disposed equidistant with the part line between the mold halves.
Claim 3
Dependent Claim
42 words
The invention of claim 1 wherein said upper mold halves are carried by a common press plate and the lower mold halves are fixed on a common platen, said press plate being mounted for guided vertical reciprocable movement relative to the platen.
Claim 4
Dependent Claim
135 words
In an injection blow molding machine having plural operating stations, a turret rotatable and elevatable in respect to said plural stations and carrying parison pins and surrounded by said operating stations including an opposing pair of parison mold stations comprised of separable parison molds having fixed lower mold halves and upper mold halves vertically movable along an axis parallel to the rotatable axis of the turret; the improvement comprising a common platen fixedly supporting the lower mold halves, a common press plate carrying the upper mold halves, guide means guidingly supporting the press plate for vertical reciprocable movement relative to the platen, means for moving said platen to bring the upper mold halves into closure relation with the lower mold halves and including clamping means for locking said mold halves together under equal positive force.
Claim 5
Dependent Claim
135 words
In an injection blow molding machine having plural operating stations, a turret rotatable and elevatable in respect to said plural stations and carrying parison pins and surrounded by said operating stations including an opposing pair of parison mold stations comprised of separable parison molds having fixed lower mold halves and upper mold halves vertically movable along an axis parallel to the rotatable axis of the turret; the improvement comprising a common platen fixedly supporting the lower mold halves, a common press plate carrying the upper mold halves, guide means guidingly supporting the press plate for vertical reciprocable movement relative to the platen, means for moving said platen to bring the upper mold halves into closure relation with the lower mold halves and including clamping means for locking said mold halves together under equal positive force.
Claim 6
Dependent Claim
56 words
The invention of claim 3 wherein means is actuated by said last means for elevating the turret in synchronous movement with the upper mold halves and at a distance one-half the distance of the upper mold halves so that the pins carried by the turret are disposed equidistant with the parting line between the mold halves.
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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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |