US3590437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injection molding presses
Assignee: Farrel Corp
•
Filing: 1968-08-08
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Granted: 1971-07-06
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Expires: 1988-08-08
Abstract
Abstract An injection molding press including stationary means for mounting a portion of a mold assembly, movable means for mounting the remainder of the mold assembly for movement toward and away from the stationary mold mounting means, means for moving the movable means whereby to bring the mold assembly portions into engagement or near engagement with one another, and a second moving means for urging the mold members together under high force.
Inventors
- 👤 Rupert E Annis Jr
- 👤 Adolph S Dorosz
- 👤 Richard M Elliott
- 👤 Frederick S Sillars
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:50
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/64; B29C45/67; B29C45/6707; B29C45/6714; B29C45/6764; B29C45/6771; Y; Y10; Y10S; Y10S425/00; Y10S425/221; Y10S425/223
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
37 words
The invention according to claim 1 including guide means mounted on said second stationary platen and engageable with said core member to support said core member and maintain said core member in alignment with said collar member.
Claim 2
Dependent Claim
14 words
The invention according to claim 2 in which said guide means comprise roller members.
Claim 3
Dependent Claim
28 words
The invention according to claim 1 including means for assuring alignment of said core member groove and said lug means prior to locking movement of said lug means.
Claim 4
Dependent Claim
260 words
A press for clamping together a mold assembly for use in high pressure injection molding, the press comprising a base, a stationary platen fixed to said base for supporting a first mold member, tie bar means mounted on said stationary platen and extending therefrom, a second platen mounted on said tie bar means and removed from said stationary platen, a movable platen mounted on said tie bar means and disposed between said stationary platen and said second platen, said movable platen being adapted for mounting a second mold member, means mounted on said second platen for moving said movabLe platen along said tie bar means toward said stationary platen whereby to position said second mold member proximate to said first mold member, a core member fixed to said movable platen and extending through an opening in said second platen, locking means mounted on said second platen and receivable by said core member after operation of said moving means to move said second mold member proximate to said first mold member, and means associated with said second platen for forcing said locking means, and thereby said core member and said movable platen, toward said stationary platen whereby to firmly clamp together the first and second mold members, a clamp piston member mounted on said second platen and disposed between said core member and said second platen, the locking means being secured to the clamp piston member, and the second platen having a chamber therein defined in part by said clamp piston member, said chamber being adapted to receive high pressure fluid.
Claim 5
Dependent Claim
29 words
The invention according to claim 5 in which said locking means comprises mold lock segments and said core member is provided with peripheral groove means for receiving said segments.
Claim 6
Dependent Claim
34 words
The invention according to claim 5 in which said locking means comprises mold lock segments movable responsive to the operation of said moving means to engage peripheral groove means disposed in said core member.
References Cited (Backward Citations)
US1997074A
Cited
US2718662A
Cited
US2689978A
Cited
US2841826A
Cited
US2711157A
Cited
US2773536A
Cited
US2862238A
Cited
US2988778A
Cited
US3195186A
Cited
US3270372A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |