Plastic article or earthenware shaping or treating: apparatus – Reshaping – resizing or vulcanizing means for tire – tire...
Patent
1985-05-09
1987-05-05
Hoag, Willard E.
Plastic article or earthenware shaping or treating: apparatus
Reshaping, resizing or vulcanizing means for tire, tire...
249141, 425812, B29C 3502
Patent
active
046628339
ABSTRACT:
A venting unit is inserted in a press fit within the air vent of a rubber article forming mold and is comprised of a cylindrical body member with an axial bore having a reduced outer end section with an air inlet open to the mold cavity. The junction of the reduced outer end section with the main section of the bore is defined by a shoulder that provides a rubber severing member. Any uncured rubber which, during expansion of the rubber article to its final form that may be compressed into the reduced section expands on entering the main bore section and is severed at the shoulder on removal of the formed article from the mold cavity. The diameter of the reduced bore section relative to its axial length provides for the unexpanded rubber that adheres to the removed article being of a relatively minute size so as to form with the exterior surface of the article a substantially smooth and continuous surface.
REFERENCES:
patent: 1746107 (1930-02-01), De Mattia
patent: 3891363 (1975-06-01), Sievers et al.
patent: 4436497 (1984-03-01), Dahl et al.
patent: 4447197 (1984-05-01), Bartley et al.
Corn States Metal Fabricators, Inc.
Hoag Willard E.
Lowell Rudolph L.
LandOfFree
Venting unit for a rubber article forming mold having vents does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Venting unit for a rubber article forming mold having vents, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Venting unit for a rubber article forming mold having vents will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2396745