Dl Technology, Llc.

Speedline Technologies, Inc.

Other

The Knight Group LLC

Bradford Labs LLC

Jeffrey P Fugere

William Anthony Cavallaro

Stephen M Franklin

Kenneth C Crouch

John Kaplan

Todd Edwin O'Neil

Thomas Nowak, Jr

William M Kocsis, Jr

Francis M Beals

Provided is a feed screw assembly for a fluid dispense pump, comprising a feed screw; a feed screw shaft extending from the feed screw; a spanner nut about the feed screw shaft; a bearing assembly about the feed screw shaft between the spanner nut and the feed screw The bearing assembly includes an outer ring that directly abuts the spanner nut; and an inner ring that rotates inside and relative to the outer ring, wherein the inner ring is coupled to the feed screw shaft for rotating the feed screw, and wherein the inner ring is separated from the spanner nut by a gap.

Micro-volume dispense pump systems and methods

A dispense tip for low-volume dispensing is formed according to a process. The process comprises forming a hole through a length of a neck formed of a body of material; forming an inlet hole at a distal end of the hole, the inlet hole having a first inner diameter; forming an outlet hole at a distal end of the inlet hole, the outlet hole having a second inner diameter less than the first inner diameter, a first inner taper transitioning the inlet hole from the first inner diameter to the second inner diameter; forming an outer taper having a width that decreases along a longitudinal axis of the length of the hole in a direction of a distalmost end of the outlet hole; and reducing a width of an opening at the distalmost end of the outlet hole to a third inner diameter that is less than the second inner diameter.

Material dispense tips

A dispense tip constructed and arranged to communicate with a material dispensing pump comprises an elongated neck and a molded base having a first portion and a second portion opposite the first portion. The neck extends from the first portion of the base. The second portion is constructed and arranged to abut an outlet surface of the pump. An outermost region of the second portion of the base includes a compressible fluid-tight surface that compliantly conforms to the outlet surface when the dispense tip is mounted to the pump.

Material dispense tips and methods for forming the same

A neck hole of a dispense tip is formed through a length of a body from an input end to an output end. An inlet hole is formed at a distal end of the neck hole, the inlet hole having a first inner diameter. An outlet hole is formed at a distal end of the inlet hole, the outlet hole having a second inner diameter less than the first. A first inner taper transitions the inlet hole from the first inner diameter to the second inner diameter. An outer taper is formed having a width that decreases along a longitudinal axis of the length of the neck hole at a distalmost end. The width of the outer taper is reduced at the distalmost end at the output end of the body of material from a first outer width to a second outer width less than the first outer width.

A material dispense tip includes an elongated hole in an elongated neck that extends from an input end of the neck to an output end of the neck. The hole at the output end of the neck has a first diameter. The output end of the neck is positioned against a die surface. A punch is inserted into the hole at the input end of the neck. An external force is applied to the neck to cause the output end of the neck to be deformed under compression by the die surface, to reduce the diameter of the hole at the output end of the neck from the first diameter to a second diameter that is less than the first diameter.

Method for manufacturing a material dispense tip

Provided is a fluid dispense pump comprising a pump housing and a cartridge body positioned along an axis. The cartridge body comprises a chamber and a feed aperture extending through a surface of the cartridge body to the chamber. A fluid shaft extends through the cartridge body along the axis. The fluid shaft has an inlet port positioned in the chamber of the cartridge body. One of the cartridge body and the fluid shaft is attached to the pump housing and is fixed relative to the pump housing. The other of the cartridge body and the fluid shaft moves relative to the one of the cartridge body and the fluid shaft to change a position of the inlet port relative to the feed aperture during a dispensing operation.

A material dispensing pump includes a drip prevention system and method so as to avoid undesired dripping of the dispensed fluid. In one example, the fluid path is sealed. Positive pressure is applied to the fluid during a dispensing operation to present the fluid to the auger-style pump at a desired rate. Between dispensing operations, or when dispensing is completed, the fluid is placed in suspension, for example by applying a negative pressure, thereby preventing the fluid from being inadvertently released at the dispense tip. In addition, following a dispensing operation, the pump dispensing controller can be programmed to reverse the rotation of the feed screw, in order to draw the material in a reverse direction and to further suspend the fluid.

Growing community of inventors

Hampton Falls, NH, United States of America

Jeffrey P Fugere