Back to results
US 4,636,240 AGranted
Plunger assembly for glass container manufacturing
OwnerJoseph W. Kozorainventor
Life of this patent
Estimating the term…
Abstract
Equipment for glass container manufacturing wherein a plunger used to form a parison in a glass container forming operation is provided with a cylindrical sleeve adapted to lock the plunger base end against a support member firmly fastened to a reciprocal piston. The sleeve is spring-loaded to hold it in operative position and permit lateral limited adjustment during operation, and may be manually elevated to facilitate quick rotative removal of installation of the plunger.
Claims13
A plunger assembly for use in a glass forming machine comprising:
- a plunger having a nose end and a base end;
- a plunger support member having a piston-engaging end and a face end for registration with the base end of the plunger;
- a sleeve, disposed about the support member, having integral means engaging the plunger base end;
- biasing means, disposed between the sleeve and the support member, for exerting a pushing force therebetween to hold the integral means of the sleeve in firm contact with the plunger base end and thereby retain the plunger in operative position wherein the integral means of the sleeve comprises oppositely disposed shoulders projecting inwardly to the face end of the support member, and the plunger base end has oppositely laterally projecting flanges rotatively engaged between the shoulders and the face end.
1 more element
Dependencies are inferred from the claim text.