Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
244 words
In a proportioning device for a pressurized container holding a product which is to be dispensed in predetermined quantities with each operation of the device under the influence of a compressed fluid within the container, said device including a valve body connected with the upper end of a plunger tube, said valve body having an inlet passage communicating with the interior of the container through said plunger tube and an outlet passage communicating with the atmosphere, and valve means being positioned to normally close said outlet passage and normally open said inlet passage, the improvement comprising: a proportioning chamber made of a flexible material arranged at least partially along the length of the plunger tube to enclose the latter, the interior of the chamber normally being in communication with the interior of the pressurized container through the inlet passage and the plunger tube and communicating with the atmosphere through the outlet passage, said chamber being formed by two dihedrons which are symmetrical in relation to the plunger tube and which extend outwardly from the side edges of two semi-cylinders which are symmetrical with and normally spaced from the plunger tube, the upper and lower ends of the chamber being terminated by portions having generally trapezoidal configuration, operation of the valve means to a position closing the inlet passage and opening the outlet passage resulting in the contraction of the proportioning chamber and the discharge of the product within the chamber through the outlet passage.
Claim 2
Dependent Claim
244 words
In a proportioning device for a pressurized container holding a product which is to be dispensed in predetermined quantities with each operation of the device under the influence of a compressed fluid within the container, said device including a valve body connected with the upper end of a plunger tube, said valve body having an inlet passage communicating with the interior of the container through said plunger tube and an outlet passage communicating with the atmosphere, and valve means being positioned to normally close said outlet passage and normally open said inlet passage, the improvement comprising: a proportioning chamber made of a flexible material arranged at least partially along the length of the plunger tube to enclose the latter, the interior of the chamber normally being in communication with the interior of the pressurized container through the inlet passage and the plunger tube and communicating with the atmosphere through the outlet passage, said chamber being formed by two dihedrons which are symmetrical in relation to the plunger tube and which extend outwardly from the side edges of two semi-cylinders which are symmetrical with and normally spaced from the plunger tube, the upper and lower ends of the chamber being terminated by portions having generally trapezoidal configuration, operation of the valve means to a position closing the inlet passage and opening the outlet passage resulting in the contraction of the proportioning chamber and the discharge of the product within the chamber through the outlet passage.
Claim 3
Dependent Claim
55 words
A proportioning device according to claim 1 in which the inner walls of the half-cylinders have substantially the same radius as the outer wall of the plunger tube, said inner walls tightly enclosing the plunger tube, and the dihedrons being completely deflated leaving substantially no empty space in the chamber when the device is operated.
Claim 4
Dependent Claim
44 words
A proportioning device according to claim 1 in which the proportioning chamber includes a tubular housing extending upwardly from the upper end of the upper trapezoidal portion and the valve body and the valve means are enclosed within and supported by said tubular housing.
Claim 5
Dependent Claim
56 words
A proportioning device according to claim 3 which includes a cap for closing the pressurized container, said cap being fixedly mounted on said tubular housing, whereby the cap with the attached proportioning chamber and associated valve body, the valve means, and the plunger tube form a complete, unitary proportioning device for a container to be pressurized.
Claim 6
Dependent Claim
18 words
A valve as claimed in claim 1 characterized in that the proportioning chamber is made of plastics material.