The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 07, 1977
Filed:
Apr. 14, 1975
Applicant:
Inventors:
Anthony Gerald Goodfellow, Maghull, near Liverpool, EN;
Maurice Rand, Skelmersdale, EN;
Assignee:
Dunlop Limited, London, EN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; B29F / ;
U.S. Cl.
CPC ...
425515 ; 425233 ; 425388 ; 4254 / ; 425408 ; 425445 ; 425446 ; 425503 ; 425508 ; 425516 ; 425504 ; 156145 ; 156147 ;
Abstract
A moulding apparatus including a pair of mould cavities with locking spue grooves, means to form moulded rubber article parts in the cavities, means to prework the rubber without substantial curing before it is formed, means to pressurize the mould with gas and means to bring the mould cavities together to join the article parts. The arrangement for pressurizing the mould includes a retractable casing which is movable between a position in which the mould cavities are enclosed to permit their pressurization and a position in which the cavities are accessible outside the casing.