Patent US3184801A successfully refreshed from Google Patents.
Patent US3624672A successfully refreshed from Google Patents.
US3624672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molding of cellular objects
Assignee: Phillips Petroleum Co
•
Filing: 1968-06-13
•
Granted: 1971-11-30
•
Expires: 1988-06-13
Abstract
Abstract A molding apparatus which utilizes two-section split molds which are particularly adapted for molding foamable material and are provided with opening devices which automatically remove the top mold section from each mold, then swing it down to the position adjacent the bottom section of each mold. In operation, the mold is closed around elongated extrusion nozzles which are withdrawn as the mold is filled with the expandable thermoplastic material.
Inventors
- 👤 Paul L Spivy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:40
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/03; B29C45/04; B29C45/0441; B29C33/00; B29C33/20; B29C33/202; B29C33/26; B29C33/34; B29C33/36; B29C49/00; B29C49/42; B29C49/56; B29C49/5601; B29C49/5602; B29C67/00; B29C67/20; B29C2049/566; B29C2049/5661; B29C2049/5662; B29C49/5608; B29K; B29K2105/00; B29K2105/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
394 words
A mold aPparatus comprising: an extruder means; elongated extrusion nozzle means connected to said extruder means; at least one split mold means having two cooperating mold halves which in the closed position form an internal cavity with a configuration of the object to be molded, each said mold means having an aperture means communicating with its cavity which is adapted to receive said nozzle means, said aperture means positioned through said mold so that it is partially bounded by each of said mold halves; mold operating means to open and close said mold means comprising a frame means; a rotatable member rotatably positioned through said frame means; a generally L-shaped lifting member having first and second legs joined to form an apex, said first leg attached to the top of said mold in a manner so that said first leg is substantially upright and the outer edge thereof is positioned adjacent said mold when said mold top is positioned on said mold bottom in a closed relationship; an elongated guiding member having its first end pivotally mounted on said frame at a first pivot point and having its second end pivotally mounted adjacent the apex of said generally L-shaped member at a second pivot point to guide said apex in a first arcual motion away from said mold and toward said rotating member; and a driving rod member attached to said rotatable member and extending therefrom in a radial direction to the rotation thereof, said driving rod member pivotally attached to the end of said second leg of said generally L-shaped member at a third pivot point in a manner to thereby carry the end of said second leg in a second arcual motion away from said mold and around said rotatable member so that a partial rotation of said rotating member will cause said second and third pivot points to move through said first and second arcual motions respectively and thereby cause the top of said mold to lift upwardly and become positioned at a point adjacent the bottom of said mold; and positioning and actuating means cooperating with said moldoperating means to align said mold in open position adjacent said extrusion nozzle means and to actuate said mold-operating means to thereby enclose the outlet end of said extrusion nozzle means within said cavity leaving said extrusion nozzle means extending through said aperture.
Claim 2
Dependent Claim
394 words
A mold aPparatus comprising: an extruder means; elongated extrusion nozzle means connected to said extruder means; at least one split mold means having two cooperating mold halves which in the closed position form an internal cavity with a configuration of the object to be molded, each said mold means having an aperture means communicating with its cavity which is adapted to receive said nozzle means, said aperture means positioned through said mold so that it is partially bounded by each of said mold halves; mold operating means to open and close said mold means comprising a frame means; a rotatable member rotatably positioned through said frame means; a generally L-shaped lifting member having first and second legs joined to form an apex, said first leg attached to the top of said mold in a manner so that said first leg is substantially upright and the outer edge thereof is positioned adjacent said mold when said mold top is positioned on said mold bottom in a closed relationship; an elongated guiding member having its first end pivotally mounted on said frame at a first pivot point and having its second end pivotally mounted adjacent the apex of said generally L-shaped member at a second pivot point to guide said apex in a first arcual motion away from said mold and toward said rotating member; and a driving rod member attached to said rotatable member and extending therefrom in a radial direction to the rotation thereof, said driving rod member pivotally attached to the end of said second leg of said generally L-shaped member at a third pivot point in a manner to thereby carry the end of said second leg in a second arcual motion away from said mold and around said rotatable member so that a partial rotation of said rotating member will cause said second and third pivot points to move through said first and second arcual motions respectively and thereby cause the top of said mold to lift upwardly and become positioned at a point adjacent the bottom of said mold; and positioning and actuating means cooperating with said moldoperating means to align said mold in open position adjacent said extrusion nozzle means and to actuate said mold-operating means to thereby enclose the outlet end of said extrusion nozzle means within said cavity leaving said extrusion nozzle means extending through said aperture.
Claim 3
Dependent Claim
23 words
The apparatus of claim 1 further comprising means to withdraw said mold from said extrusion nozzle means as said mold is being filled.
Claim 4
Dependent Claim
26 words
The apparatus of claim 1 wherein said positioning means comprises a turret, and said turret having a plurality of said molds equally spaced adjacent its periphery.
Claim 5
Dependent Claim
23 words
The apparatus of claim 3 wherein said turret comprises two circular members positioned on a spindle and spaced thereon by spacing rod means.
Claim 6
Dependent Claim
39 words
The apparatus of claim 4 wherein said mold means are slidably mounted on said spacing rod means, and means are provided to slide each mold along said spacing rod means adjacent said nozzle means as said mold is indexed.
Claim 7
Dependent Claim
66 words
The apparatus of claim 1 wherein said positioning and actuating means comprises a first actuating means positioned adjacent said nozzle means to rotate said rotatable member in a first direction thereby causing said mold to close, and a second actuating means in spaced relationship with said nozzle means to rotate said rotatable member in a second direction and open said mold after said mold is filled.
Claim 8
Dependent Claim
18 words
The apparatus of claim 6 further comprising a molded object ejection means positioned adjacent said second actuating means.
Claim 9
Dependent Claim
55 words
The apparatus of claim 7 wherein said molded object''s ejection means comprises ejection needle means positioned to pass through said aperture and be forced into the molded object within the mold, and means to move said ejection needle having a formed object impaled thereon in a direction from said mold after said mold is opened.
Claim 10
Dependent Claim
266 words
A mold opening apparatus for removing a top movable section from a bottom stationary section of a split mold coMprising: a frame means; a rotatable member rotatably positioned through said frame means; a generally L-shaped lifting member having first and second legs joined to form an apex, said first leg attached to the top of said mold in a manner so that said first leg is substantially upright and the outer edge thereof is positioned adjacent said mold when said mold top is positioned on said mold bottom in a closed relationship; an elongated guiding member having its first end pivotally mounted on said frame at a first pivot point and having its second end pivotally mounted adjacent the apex of said generally L-shaped member at a second pivot point to guide said apex in a first arcual motion away from said mold and toward said rotating member; a driving rod member attached to said rotatable member and extending therefrom in a radial direction to the rotation thereof, said driving rod member pivotally attached to the end of said second leg of said generally L-shaped member at a third pivot point in a manner to thereby carry the end of said second leg in a second arcual motion away from said mold and around said rotatable member so that a partial rotation of said rotating member will cause said second and third pivot points to move through said first and second arcual motions respectively and thereby cause the top of said mold to lift upwardly and become positioned at point adjacent the bottom of said mold.
Claim 11
Dependent Claim
266 words
A mold opening apparatus for removing a top movable section from a bottom stationary section of a split mold coMprising: a frame means; a rotatable member rotatably positioned through said frame means; a generally L-shaped lifting member having first and second legs joined to form an apex, said first leg attached to the top of said mold in a manner so that said first leg is substantially upright and the outer edge thereof is positioned adjacent said mold when said mold top is positioned on said mold bottom in a closed relationship; an elongated guiding member having its first end pivotally mounted on said frame at a first pivot point and having its second end pivotally mounted adjacent the apex of said generally L-shaped member at a second pivot point to guide said apex in a first arcual motion away from said mold and toward said rotating member; a driving rod member attached to said rotatable member and extending therefrom in a radial direction to the rotation thereof, said driving rod member pivotally attached to the end of said second leg of said generally L-shaped member at a third pivot point in a manner to thereby carry the end of said second leg in a second arcual motion away from said mold and around said rotatable member so that a partial rotation of said rotating member will cause said second and third pivot points to move through said first and second arcual motions respectively and thereby cause the top of said mold to lift upwardly and become positioned at point adjacent the bottom of said mold.
References Cited (Backward Citations)
US1858956A
Cited
US2858564A
Cited
US2951261A
Cited
US3179981A
Cited
US3344471A
Cited
US3425092A
Cited
US3355763A
Cited
US3501809A
Cited
US3496600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |