Title: Caulking tube with an improved seal to retard the passage of air

Abstract: The present invention relates to an improved caulking tube with a superior seal between the plunger and the rear of the caulking tube which is produced by coating the inside of the rear end of the body of the caulking tube with a moisture proof cohesive chemical material such that after the caulking tube is filled with the desired material and after the plunger is inserted there is produced an airtight moisture proof seal.

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Inventors: Robillard, Robert J. (Troy, NY, US)

Application Number: 882301
Filing Date: 1978-02-28
Publication_date: 1980-08-19
Assignee: General Electric Company (Waterford, NY)
Primary Class(es): 222/327
Other Classes:
US Patent Ref:

2343026	Feb, 1944	Radbruch	222/386.
2478078	Aug, 1949	Battenfeld	222/327.
2827395	Mar, 1958	Jordan et al.	252/59.
2833451	May, 1958	Sherbondy	222/327.
3080330	Mar, 1963	Rudel et al.	252/59.
3205206	Sep, 1965	Marcantonio	252/59.
3250443	May, 1966	Abbott	222/327.
3428565	Feb, 1969	Fischer	252/59.
3503542	Mar, 1970	Ungerer	222/327.
3527389	Sep, 1970	Farmer	222/327.
3815791	Jun, 1974	Clark	222/326.

Other Refs:
Primary Examiner: Bartuska, F. J.
Assistant Examiner:
Attorney: Koltos; E. Philip, Forman; Joseph B.