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. 02, 1998
Filed:
Jun. 28, 1996
Applicant:
Inventor:
Bruce M D'Andrade, Whitehouse Station, NJ (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65B / ;
U.S. Cl.
CPC ...
222 79 ; 222212 ; 92 90 ; 417474 ;
Abstract
A bladder for liquid containment and injection, utilizing the elasticity of the bladder for the motive force for liquid ejection, is made of a hollow, tubular member which has a section of weakened elastic strength relative to the remainder of the tubular member. It also has a strength gradient created by a modified shape. In one embodiment, it has a variable diameter, larger at it's front end and smaller at it's back end. In another embodiment, it has a constant diameter with a wall thickness gradient. Combined variable diameters and wall thickness may be used.