Fluid driven pump
AssigneeVersa-Matic Tool, Inc.
InventorsWilliam F. Versaw, Charles W. Taylor, Mitchell H. Jordan
Life of this patent
Estimating the term…
Abstract
A fluid driven pump includes an inlet, at least one expansion chamber for expanding upon introduction of fluid thereinto and contracting upon removal of fluid therefrom, a pumping chamber adjacent the expansion chamber for pumping in response to the expansion chamber's expansion and contraction, and an outlet for outletting pressurized fluid from the expansion chamber. A control system controls a flow of fluid from the inlet to the expansion chamber and a flow of pressurized fluid from the expansion chamber to the outlet. The outlet includes structure for gradually reducing the pressure of the fluid within a portion of the outlet to reduce blockage of the outlet due to freezing.
Claims21
A fluid driven pump, comprising:
- inletting means for inletting fluid;
- expanding chamber means for expanding upon introduction of fluid thereinto and contracting upon removal of fluid therefrom;
- pumping chamber means positioned adjacent said expanding chamber means for pumping in response to expansion and contraction of said expanding chamber means;
- outletting means for outletting pressurized fluid;
- and
- control means for controlling a flow of fluid from said inletting means to said expanding means, and a flow of pressurized fluid from said expanding means to said outletting means;
- wherein said outletting means includes means for gradually reducing the pressure of the fluid within a portion of said outletting means to reduce blockage of said outletting means due to freezing.
A fluid driven pump as claimed in claimed 3, wherein said alternating means includes
- spool valve means for connecting said first chamber to said inletting means and said second chamber to said outletting means when said spool valve means is in a first position, and for connecting said first chamber to said outletting means and said second chamber to said inletting means when said spool valve means is in a second position;
- and
- a pilot shaft means for controlling flow of the fluid to move said spool valve means from said first position to said second position in response to inward movement of said second diaphragm means, and to move said spool valve means from said second position to said first position in response to inward movement of said first diaphragm means.
A fluid driven pump, comprising:
- inletting means for inletting fluid;
- expanding chamber means for expanding upon introduction of fluid thereinto and contracting upon removal of fluid therefrom;
- pumping chamber means positioned adjacent said expanding chamber means for pumping in response to expansion and contraction of said expanding chamber means;
- outletting means for outletting pressurized fluid;
- and
- control means for controlling a flow of fluid from said inletting means to said expanding means, and a flow of pressurized fluid from said expanding means to said outletting means;
- wherein said outletting means includes a primary section which is tapered for gradually increasing the cross-sectional area of said outletting means.
A fluid driven pump as claimed in claimed 10, wherein said alternating means includes
- spool valve means for connecting said first chamber to said inletting means and said second chamber to said outletting means when said spool valve means is in a first position, and for connecting said first chamber to said outletting means and said second chamber to said inletting means when said spool valve means is in a second position;
- and
- a pilot shaft means for controlling flow of the fluid to move said spool valve means from said first position to said second position in response to inward movement of said second diaphragm means, and to move said spool valve means from said second position to said first position in response to inward movement of said first diaphragm means.
A fluid driven pump, comprising:
- an inlet for connection to a source of fluid;
- a first expansion chamber which is expandable upon introduction of fluid into said first expansion chamber and contractable upon removal of fluid therefrom;
- a first pumping chamber positioned adjacent said first expansion chamber to pump in response to expansion and contraction of said first expansion chamber;
- an outlet;
- and
- a fluid control system, said control system being in fluid communication with said inlet, said first expansion chamber, and said outlet, to control a flow of fluid from said inlet to said first expansion chamber, and to control a flow of pressurized fluid from said first expansion chamber to said outlet;
- wherein said outlet includes a primary section which includes at least one tapered wall to gradually decrease the pressure of fluid within said primary section, and a secondary section which widens more rapidly to more rapidly decrease the pressure of fluid within said secondary section, to reduce blockage of said outlet due to freezing.
Dependencies are inferred from the claim text.