US3732055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for automatically producing a molded sole
Assignee: Bata Shoe Co Inc
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Filing: 1970-10-30
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Granted: 1973-05-08
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Expires: 1990-10-30
Abstract
Abstract The automatic manufacture of a molded sole in which means are provided for automatically removing the sprues of material normally remaining attached to a sole after the molding thereof with the sprues being removed during movement of the molds between a molding position and a discharge position. Subsequently and during the return movement of the molds from the discharge position to the molding position, the molded soles are wiped from the molds, whereby upon return of the molds to the molding position, the apparatus is ready for a further molding cycle.
Inventors
- 👤 L Hujik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:27
CPC Classifications
B; B29; B29D; B29D35/00; B29D35/0009; B29C; B29C45/00; B29C45/17; B29C45/1769; B29C31/00; Y; Y10; Y10S; Y10S425/00; Y10S425/051
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
171 words
An automatic sole molding apparatus comprising two mold sections; means for moving said mold sections into sealing engagement for forming a mold cavity prior to injection of a thermoplastic material into the mold cavity, and for moving said mold sections apart to permit removal of a molded sole; means for moving said mold sections in mutually perpendicular directions; gripper means for gripping and removing a sprue of said thermoplastic material which remains attached to the sole subsequent to a molding operation and after said mold sections have been moved apart; cam means for moving said gripper means to a position behind the mold for gripping the sprue at an intermediate point in the path of travel of one of said mold sections carrying the molded sole, and for moving said gripper means out of said path of travel after removal of the sprue; and valve means for closing said gripper means on a sprue for removing the sprue during subsequent further travel of said one mold section in the same direction.
Claim 2
Dependent Claim
171 words
An automatic sole molding apparatus comprising two mold sections; means for moving said mold sections into sealing engagement for forming a mold cavity prior to injection of a thermoplastic material into the mold cavity, and for moving said mold sections apart to permit removal of a molded sole; means for moving said mold sections in mutually perpendicular directions; gripper means for gripping and removing a sprue of said thermoplastic material which remains attached to the sole subsequent to a molding operation and after said mold sections have been moved apart; cam means for moving said gripper means to a position behind the mold for gripping the sprue at an intermediate point in the path of travel of one of said mold sections carrying the molded sole, and for moving said gripper means out of said path of travel after removal of the sprue; and valve means for closing said gripper means on a sprue for removing the sprue during subsequent further travel of said one mold section in the same direction.
Claim 3
Dependent Claim
83 words
The apparatus as claimed in claim 1 including means for moving the molded sole out of contact with said mold section after separation of said two mold sections, and stationary means mounted over the path of travel of said mold section for engaging the heel section of said molded sole upon movement of said mold section to its furthermost extent in said one direction to wipe said molded sole from said mold section during return movement of the latter in the opposite direction.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-07 | 1976-11-06 | 1977-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-07 | 1980-11-06 | 1981-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-07 | 1984-11-06 | 1985-05-08 | $7700.00 | Window Closed / Lapsed |