Liquid transfer device
AssigneeInstrumentation Laboratory Company
InventorsWilliam E. Flynn, Charles F. Mountain
Life of this patent
Estimating the term…
Abstract
A device for dispensing liquid from an ampul or the like has a body that defines a cavity with an open entrance end for receiving an ampul. An annular seal in the cavity is in sealing engagement with an ampul as the ampul is telescopically inserted into the cavity, and an inlet tube secured in the cavity has an inlet end adjacent the open end of the cavity and an outlet end in fluid communication with a dispensing passage, so that when an ampul is in sealing engagement with the annular seal and the inlet end of the tube is submerged in liquid in the ampul, further axial movement of the ampul into the cavity creates a piston action which compresses air trapped in the cavity and forces liquid from the ampul through the inlet tube and the dispensing passage in a dispensing action.
Claims9
A device for dispensing liquid from an ampul or the like comprising
- a body that defines a cavity, said cavity having an open entrance end for receiving an ampul and a closed end spaced from said open entrance end,
- structure defining a dispensing port and a passage providing fluid communication between said dispensing port and said cavity,
- an annular seal in said cavity for sealing engagement with an ampul as the ampul is telescopically inserted into said cavity,
- inlet tube structure in said cavity having an inlet end located adjacent the open end of said cavity and an outlet in fluid communication with said passage, said annular seal arranged for cooperation with an ampul inserted into said cavity to permit further axial movement of said ampul into said cavity when said ampul is in sealing engagement with said annular seal and the inlet end of said inlet tube structure is submerged in liquid in the ampul so that said further axial movement of said ampul into said cavity creates a piston action which compresses air trapped in said cavity and forces liquid from said ampul through said inlet tube structure, said passage and said dispensing port in a dispensing action, and
- biasing means in said cavity for engaging the ampul and tending to urge the ampul outwardly of said cavity upon release of the ampul after dispensing action is completed.
A device for dispensing liquid from an ampul or the like comprising
- a body that defines a cavity, said cavity having an open entrance end for receiving an ampul and a closed end spaced from said open entrance end,
- structure defining a dispensing port and a passage providing fluid communication between said dispensing port and said cavity,
- an annular seal in said cavity for sealing engagement with an ampul as the ampul is telescopically inserted into said cavity,
- an inlet tube secured in said cavity and having an inlet end located adjacent the open end of said cavity and an outlet end secured at the closed end of said cavity in fluid communication with said passage, said inlet tube extending towards the open end of said cavity with its inlet end located between said annular seal and said entrance end of said cavity,
- said annular seal arranged for cooperation with an ampul inserted into said cavity to permit further axial movement of said ampul into said cavity when said ampul is in sealing engagement with said annular seal and the inlet end of said tube is submerged in liquid in the ampul so that said further axial movement of said ampul into said cavity creates a piston action which compresses air trapped in said cavity and forces liquid from said ampul through said inlet tube, said passage and said dispensing port in a dispensing action.
A device for dispensing liquid from an ampul or the like comprising
- a body that defines a cavity, said cavity having an open entrance end for receiving an ampul and a closed end spaced from said open entrance end,
- structure defining a dispensing port and a passage providing fluid communication between said dispensing port and said cavity,
- inlet tube structure in said cavity having an inlet end located adjacent the open end of said cavity and an outlet in fluid communication with said passage,
- an annular seal in said cavity for sealing engagement with an ampul as the ampul is telescopically inserted into said cavity, said annular seal surrounding said inlet tube structure and being mounted for axial movement within said cavity,
- said annular seal arranged for cooperation with an ampul inserted into said cavity to permit further axial movement of said ampul into said cavity when said ampul is in sealing engagement with said annular seal and the inlet end of said inlet tube structure is submerged in liquid in the ampul so that said further axial movement of said ampul into said cavity creates a piston action which compresses air trapped in said cavity and forces liquid from said ampul through said inlet tube structure, said passage and said dispensing port in a dispensing action.
Dependencies are inferred from the claim text.