US4125353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injection-molding installation, particularly for the production of footwear
Assignee: LIM KUNSTSTOFF TECHNOLOGIE GESELLSCHFT MBH A CORP OF AUSTRIA
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Filing: 1977-05-10
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Granted: 1978-11-14
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Expires: 1997-05-10
Abstract
Abstract A machine for the production of footwear by injection molding comprises a multiplicity of shoe molds on a common carrier, such as a turntable, moving successively past a core-insertion station and an injection station. At the insertion station, a mold core in the form of a last is lowered into an open shoe mold which then moves into alignment with an extruder at the injection station. The lowerable core support at the insertion station carries a feeler which, by coming to rest on an aligned mold or on the mold carrier, limits the descent of the core into the mold.
Inventors
- 👤 Alfred Stark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:54
CPC Classifications
B; B29; B29D; B29D35/00; B29D35/0009; B29C; B29C45/00; B29C45/03; B29C45/04; B29C45/06; B29C45/062
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
108 words
In a machine for producing footwear, in combination: a movable mold carrier; a multiplicity of openable and closable molds spacedly disposed on said mold carrier; a single core-insertion station and a single injection station adjacent said mold carrier; drive means coupled with said mold carrier for successively aligning each of said molds first with said core-insertion station and then with said injection station; and support means at said core-insertion station operable upon the alignment of a mold therewith for introducing a last-shaped core from above into the aligned mold prior to a displacement of the latter to said injection station for the introduction of molding material into same.
Claim 2
Dependent Claim
108 words
In a machine for producing footwear, in combination: a movable mold carrier; a multiplicity of openable and closable molds spacedly disposed on said mold carrier; a single core-insertion station and a single injection station adjacent said mold carrier; drive means coupled with said mold carrier for successively aligning each of said molds first with said core-insertion station and then with said injection station; and support means at said core-insertion station operable upon the alignment of a mold therewith for introducing a last-shaped core from above into the aligned mold prior to a displacement of the latter to said injection station for the introduction of molding material into same.
Claim 3
Dependent Claim
41 words
The combination defined in claim 1 wherein said support means has a part overhanging said mold carrier, further comprising feeler means on said overhanging part engageable with said mold carrier for limiting the descent of said core into an aligned mold.
Claim 4
Dependent Claim
18 words
The combination defined in claim 2 wherein said feeler means is positioned for contact with the aligned mold.
Claim 5
Dependent Claim
13 words
The combination defined in claim 1 wherein said mold carrier is a turntable.
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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) | 1981-11-13 | 1982-05-15 | 1982-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-13 | 1986-05-15 | 1986-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-13 | 1990-05-15 | 1990-11-14 | $7700.00 | Window Closed / Lapsed |