Method and apparatus for measuring absolute densities

Claim 3

In weight per unit volume measuring apparatus, a device for providing an accurate volume of fluids and semi-fluid solids having quantities of non-dissolved gas trapped therein, comprising: a. container means having a closed lower end and a substantially unobstructed upper end; b. closure means adapted to substantially cover said unobstructed upper end; c. valve means in said closure means for permitting the flow of fluid therethrough into said container means; d. means for removably attaching said closure means to said container means; e. pump means for sealingly engaging said valve means and injecting fluid into said container at a sufficient pressure to compress said entrapped non-dissolved gases to a negligible volume; f. valve body means slidably located within said valve means and arranged to move downward in response to fluidic pressure applied by said pump means and further adapted to move back upwards upon release of said pumped fluid pressure; and g. one or more bore passages in said valve body means arranged to provide fluid communication between said pump means and said container means In said downward position of said valve body means, and further arranged in said upward position of said valve body means to prevent fluid communication from said container means back into said pump means.

Claim 4

In weight per unit volume measuring apparatus, a device for providing an accurate volume of fluids and semi-fluid solids having quantities of non-dissolved gas trapped therein, comprising: a. container means having a closed lower end and a substantially unobstructed upper end; b. closure means adapted to substantially cover said unobstructed upper end; c. valve means in said closure means for permitting the flow of fluid therethrough into said container means; d. means for removably attaching said closure means to said container means; e. pump means for sealingly engaging said valve means and injecting fluid into said container at a sufficient pressure to compress said entrapped non-dissolved gases to a negligible volume; f. valve body means slidably located within said valve means and arranged to move downward in response to fluidic pressure applied by said pump means and further adapted to move back upwards upon release of said pumped fluid pressure; and g. one or more bore passages in said valve body means arranged to provide fluid communication between said pump means and said container means In said downward position of said valve body means, and further arranged in said upward position of said valve body means to prevent fluid communication from said container means back into said pump means.

Claim 5

The apparatus of claim 2 further comprising means on said apparatus for suspending said apparatus from a weighing scale; and seal means between said closure means and said container means.

Claim 6

The apparatus of claim 2 wherein said container means comprises a cylindrical cup having an integral closed end at the bottom and a substantially open end at the top; and said closure means comprises a closure cap adapted to fit snugly within said open end of said container, said closure cap having an annular outwardly extending flange adapted to abut the upper edge of said cylindrical cup and platform means having opening means therein for receiving said valve means.

Claim 7

The apparatus of claim 2 wherein said attaching means comprises an internally threaded ferrule adapted to enclose said closure cap in abutting relationship with said annular flange thereof and having opening means therethrough for said valve means; and said attaching means further comprises an externally threaded portion on the upper end of said cylindrical cup adapted to matingly receive said threaded portion of said ferrule.

Claim 8

The apparatus of claim 2 wherein said pump means comprises a tubular housing; lower valve coupler means fixedly attached to the lower end of said housing and arranged to sealingly engage said valve means for fluidic communication therethrough, said coupler means having a fluidic bore passage therethrough communicating with the bore of said tubular housing; piston means sealingly slidable within said tubular body, said piston means having a connecting rod extending out of said tubular housing, and handle means connected to said connecting rod; and piston retaining means fixedly attached to the upper end of said tubular housing, said retaining means adapted to enclose the end of said tubular housing, and said retaining means having an opening therethrough slightly larger than said connecting rod and arranged to have said connecting rod passing therethrough.