Disposable syringe dispenser system

A dispenser comprising:

• a reservoir for holding a viscous material to be dispensed;
• a deformable outlet tube operatively coupled with said reservoir and presenting an outlet end;
• a flow controlling assembly including an elongated pivot arm presenting a pair of opposed ends, one of said ends supporting a tube-engaging element, a spring carried by said pivot arm and outwardly biasing said tube engaging element, and an actuator coupled with said element in order to selectively move the element from a flow-permitting position spaced from said tube into material flow-blocking, tube-deforming engagement with said tube, and to move the element along the tube in a direction away from said outlet end to create a suction drawing material at said outlet end into the tube,
• said assembly operable to resiliently engage said tube when said element is in the material flow-blocking position thereof;
• and
• a housing supporting said flow controlling assembly, said reservoir and tube being received within said housing.

A dispenser comprising:

• a reservoir for holding a viscous material to be dispensed;
• a deformable outlet tube operatively coupled with said reservoir and presenting an outlet end;
• a flow controlling assembly including a tube-engaging element and an actuator coupled with said element in order to selectively move the element from a flow-permitting position spaced from said tube into material flow-blocking, tube-deforming engagement with said tube, and to move the element along the tube in a direction away from said outlet end to create a suction drawing material at said outlet end into the tube,
• said assembly operable to resiliently engage said tube when said element is in the material flow-blocking position thereof;
• and
• a backing member in opposed relationship to said element when said tube is disposed between the element and the backing member, said backing member being resilient and deformable when said element is moved to said flow-blocking position therein.

A dispenser comprising:

• a reservoir for holding a viscous material to be dispensed;
• a deformable outlet tube operably coupled with said reservoir and presenting an outlet end;
• a housing supporting said reservoir and having a selectively openable door permitting access to said reservoir,
• said reservoir including a fluid pressure-actuated shiftable piston oriented to move said material within the reservoir toward and out said outlet end, and a fluid conduit for selective passage of fluid to said piston for said shifting thereof;
• a bypass assembly operably coupled with said conduit so that, when said door is open, said fluid is diverted and prevented from passing to said piston;
• and
• a flow controlling assembly including a tube-engaging element and an actuator coupled with said element in order to selectively move the element from a flow-permitting position adjacent said tube into material flow-blocking, tube-deforming engagement with the tube.

A dispenser comprising:

• a reservoir for holding a viscous material to be dispensed;
• a deformable outlet tube operatively coupled with said reservoir and presenting an outlet end;
• a flow controlling assembly including a tube-engaging element and an actuator coupled with said element in order to selectively move the element from a flow-permitting position adjacent said tube into material flow-blocking, tube-deforming engagement with said tube, and to move the element along the tube in a direction away from said outlet end to create a suction drawing material at said outlet end into the tube,
• said assembly operable to resiliently engage said tube when said element is in the material flow-blocking position thereof,
• said flow-controlling assembly further including a chamber, a material piston within the chamber and operatively coupled with said actuator, and a fluid circuit arranged so that, when fluid pressure is applied against said piston, said element is moved from said flow-blocking position to said flow-permitting position, said fluid circuit permitting exhaust of said fluid from said chamber when said element is moved along the length of said tube to create said suction,
• said flow-controlling assembly further including a flow control valve operable to adjustably meter said exhaust of said fluid from said chamber in order to control the rate of movement of said element along the length of said tube to create said suction.

A dispenser comprising:

• a reservoir for holding a viscous material to be dispensed;
• a deformable outlet tube operatively coupled with said reservoir and presenting an outlet end;
• a flow controlling assembly including a tube-engaging element and an actuator coupled with said element in order to selectively move the element from a flow-permitting position spaced from said tube into material flow-blocking, tube-deforming engagement with said tube, and to move the element along the tube in a direction away from said outlet end to create a suction drawing material at said outlet end into the tube;
• and
• a backing member in opposed relationship to said element with said tube disposed between the element and backing member, said backing member being resilient and deformable when said element is moved to said flow-blocking position thereof,
• said assembly operable to resiliently engage said tube when said element is in the material flow-blocking position thereof.