Abstract: A jet injector having cartridge and power pack assemblies is disclosed. In one embodiment, the cartridge assembly includes a tube containing the medicament with a plunger at one end and a stopper at the other end. The plunger is movable within the tube lumen to force the stopper against a needle, thereby creating a fluid pathway through the stopper. In another embodiment, only the plunger is movable within the tube lumen and the stopper, which can be integral to the rest of the cartridge assembly or a separate component, already has a pathway for ejection of the medicament. The present invention also relates to an energy mechanism for the power pack assembly that is a gas spring containing a charging material existing in liquid and gaseous phase equilibrium within the gas spring to maintain a substantially constant pressure prior to activation.

Abstract: A progressive die for forming a turbulator having multiple rows of axial corrugations. The corrugations are slit and offset such that artificial turbulence is generated as it passes through the corrugations. The device includes a plurality of dies disposed along an axial material direction. A flat strip of material enters the dies and is folded about its longitudinal axis in a relatively wide V-fold. As the strip of material moves forward, it is intermittently stamped in the series of dies. The initial dies create a central V-shaped fold that gradually narrows into a U-shaped channel with straight walls. Once the first corrugation is formed, a series of progressive dies form the remaining corrugations in alternating fashion. Next, the material moves through a slitting station that provides apertures and an axial offset such that adjacent sections of the corrugation are slit and offset in the axial direction.

Abstract: A jet injector having cartridge and power pack assemblies is disclosed. In one embodiment, the cartridge assembly includes a tube containing the medicament with a plunger at one end and a stopper at the other end. The plunger is movable within the tube lumen to force the stopper against a needle, thereby creating a fluid pathway through the stopper. In another embodiment, only the plunger is movable within the tube lumen and the stopper, which can be integral to the rest of the cartridge assembly or a separate component, already has a pathway for ejection of the medicament. The present invention also relates to an energy mechanism for the power pack assembly that is a gas spring containing a charging material existing in liquid and gaseous phase equilibrium within the gas spring to maintain a substantially constant pressure prior to activation.

Abstract: A progressive die for forming a turbulator having multiple rows of axial corrugations. The corrugations are slit and offset such that artificial turbulence is generated as it passes through the corrugations. The device includes a plurality of dies disposed along an axial material direction. A flat strip of material enters the dies and is folded about its longitudinal axis in a relatively wide V-fold. As the strip of material moves forward, it is intermittently stamped in the series of dies. The initial dies create a central V-shaped fold that gradually narrows into a U-shaped channel with straight walls. Once the first corrugation is formed, a series of progressive dies form the remaining corrugations in alternating fashion. Next, the material moves through a slitting station that provides apertures and an axial offset such that adjacent sections of the corrugation are slit and offset in the axial direction.

Abstract: An animal restraint for confining an animal; e.g., a pig, in a head down, belly forward position for the performing of typical operations such as castration, docking, etc., the restraint featuring a simple frame having transverse upper and lower members and a hinged gate adapted when closed to overlie the members with the animal's hocks confined between the gate and the top member and the animal's belly confined between the gate and the lower member, the latter member being in the form of a forwardly facing saddle-like structure.