Molding process for rubber
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 16, 2021
Grant Date -
Apr 11, 2019
app pub date -
Oct 5, 2018
filing date -
Oct 6, 2017
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A one-piece rubber boot shell is created by a process comprising the steps of disposing rubber pieces within a cavity of a molding machine, the molding machine having an upper mold, a lower mold, and a last suspended between the upper mold and the lower mold. The process includes closing the molding machine by moving at least one of the upper mold, the lower mold, and the last toward each other so that they are adjacent each other, heating the rubber pieces to flow within the cavity and around the last to form a one-piece rubber boot shell, and opening the molding machine by moving at least one of the upper mold, the lower mold, and the last away from each other so that they are spaced apart from each. The one-piece rubber boot shell is then removed from the last.
First Claim
Family
International Classification(s)
- B29C:SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTAN....
- B29D:PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FRO....
- A43D:MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACT....
- A43B:CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOT....
- B29K:INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, ....
- B29L:INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RE....
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