Abstract: A device for inhibiting glass from falling into an annular cavity formed between a plunger piston and an inner piston telescopically journalled within a longitudinal cavity within the plunger piston includes a rigid sleeve mountable to the plunger piston, adjacent walls of the longitudinal cavity, so as to substantially fill the annular cavity. The sleeve is mountable into snug sliding relation with the inner piston.
Type:
Grant
Filed:
November 25, 1998
Date of Patent:
October 17, 2000
Assignee:
Kare Innovation Corporation
Inventors:
Eric C. Kjaer-Pedersen, Kenneth D. Wilson