Abstract: A dispenser system and method for dispensing metered doses of a foam or liquid is disclosed. The dispensing system can include a pumping device for pumping metered doses of a liquid from a liquid reservoir out through a nozzle. The pumping device can include an electronically commutated motor that provides greater accuracy and uniformity in dispensing metered doses. During operation of the pumping device, one or more electrical parameters can be monitored and based on the electrical parameters, the system can make adjustments in dispensing metered doses. In one aspect, the electrical parameter can be monitored to determine whether the liquid reservoir contains a low level of liquid.

Abstract: A motor driven spindle assembly for a dispenser includes a spindle that defines an interior volume. A motor is disposed within the interior volume of the spindle and is operable to rotate the spindle. A bracket includes a plate, a first leg, and a second leg. The plate of the bracket is positioned within the interior volume of the spindle. Proximal end portions of the first and second legs are positioned at the plate. A distal end portion of the first leg is positioned within a first opening of a bushing such that the distal end portion of the first leg is slidable within the first opening along a lateral direction. A distal end portion of the second leg is positioned within a second opening of the bushing such that the distal end portion of the second leg is slidable within the second opening along the lateral direction.

Abstract: A reservoir assembly for use with a liquid dispenser is provided. The reservoir assembly includes a connecting member housing having a reservoir connecting surface and a switch. The reservoir connecting surface having a first switch contact surface disposed within a first protrusion member. The assembly also includes a container housing for holding a quantity of a liquid product. The container housing configured to be removably attached to the connecting member housing. The container housing includes a main container and a connecting member housing surface. The connecting member housing surface includes a second switch contact surface configured in a first weakened region.

Abstract: A reservoir assembly for use with a liquid dispenser is provided. The reservoir assembly includes a connecting member housing having a reservoir connecting surface and a switch. The reservoir connecting surface having a first switch contact surface disposed within a first protrusion member. The assembly also includes a container housing for holding a quantity of a liquid product. The container housing configured to be removably attached to the connecting member housing. The container housing includes a main container and a connecting member housing surface. The connecting member housing surface includes a second switch contact surface configured in a first weakened region.

Abstract: The present disclosure is in one aspect to a dispenser for rolled sheet materials. The dispenser includes a feed roller that is rotatably mounted to a housing of the dispenser housing, and that is configured to feed a predetermined amount of sheet material from the supply of sheet material through a discharge provided along the housing of the dispenser. The dispenser also has a feed roller drive assembly with a drive motor, and a belt transmission assembly. The belt transmission assembly has a drive belt coupled to the drive motor and to the feed roller such that rotation of the feed roller is driven by operation of the drive motor.

Abstract: The present disclosure is in one aspect to a dispenser for rolled sheet materials. The dispenser includes a feed roller that is rotatably mounted to a housing of the dispenser housing, and that is configured to feed a predetermined amount of sheet material from the supply of sheet material through a discharge provided along the housing of the dispenser. The dispenser also has a feed roller drive assembly with a drive motor, and a belt transmission assembly. The belt transmission assembly has a drive belt coupled to the drive motor and to the feed roller such that rotation of the feed roller is driven by operation of the drive motor.

Abstract: A sheet material dispenser can include a sheet material transfer assembly operable to automatically transfer feeding or dispensing of sheet material between a plurality of supplies of sheet material. The sheet material transfer assembly can include a frame that is movable between a plurality of positions including a first position that facilitates feeding of the sheet material from a first supply of sheet material, and a second position that facilitates feeding or dispensing of sheet material from a second supply of sheet material. The frame of the sheet material transfer system can shift or move to the second position for dispensing sheet material from the second supply of sheet material when the first supply of sheet material is fully dispensed.

Abstract: In one aspect, the present disclosure is directed to a sheet material dispenser. The dispenser can include support for supporting a supply of the sheet material, and a feed roller arranged along a feed path of the sheet material downstream from the supply of sheet material that is operable to pull the sheet material from the supply of sheet material for feeding thereof. Additionally, the dispenser can include a controller that is in communication with the feed roller and includes programming for monitoring rotation of the feed roller during a dispensing cycle for feeding a selected length of the sheet material from the supply of sheet material. A material supply monitoring system further can be in communication with the controller, and operative to detect a number of rotations or an angle of rotation of the supply sheet material during at least a series of dispensing cycles.

Abstract: In one aspect, the present disclosure is directed to a sheet material dispenser. The dispenser can include support for supporting a supply of the sheet material, and a feed roller arranged along a feed path of the sheet material downstream from the supply of sheet material that is operable to pull the sheet material from the supply of sheet material for feeding thereof. Additionally, the dispenser can include a controller that is in communication with the feed roller and includes programming for monitoring rotation of the feed roller during a dispensing cycle for feeding a selected length of the sheet material from the supply of sheet material. A material supply monitoring system further can be in communication with the controller, and operative to detect a number of rotations or an angle of rotation of the supply sheet material during at least a series of dispensing cycles.

Abstract: Methods, systems and apparatus for operating a liquid dispenser based on the number of revolutions of the motor causing the dispensing operation and/or based on the linear distance traveled of the piston driving the dispensing pump.

Abstract: A sheet material dispenser can include a sheet material transfer assembly operable to automatically transfer feeding or dispensing of sheet material between a plurality of supplies of sheet material. The sheet material transfer assembly can include a frame that is movable between a plurality of positions including a first position that facilitates feeding of the sheet material from a first supply of sheet material, and a second position that facilitates feeding or dispensing of sheet material from a second supply of sheet material. The frame of the sheet material transfer system can shift or move to the second position for dispensing sheet material from the second supply of sheet material when the first supply of sheet material is fully dispensed.

Abstract: Methods, systems and apparatus for operating a liquid dispenser based on the number of revolutions of the motor causing the dispensing operation and/or based on the linear distance traveled of the piston driving the dispensing pump.

Abstract: In one aspect, the present disclosure is directed to a sheet material dispenser. The dispenser can include support for supporting a supply of the sheet material, and a feed roller arranged along a feed path of the sheet material downstream from the supply of sheet material that is operable to pull the sheet material from the supply of sheet material for feeding thereof. Additionally, the dispenser can include a controller that is in communication with the feed roller and includes programming for monitoring rotation of the feed roller during a dispensing cycle for feeding a selected length of the sheet material from the supply of sheet material. A material supply monitoring system further can be in communication with the controller, and operative to detect a number of rotations or an angle of rotation of the supply sheet material during at least a series of dispensing cycles.

Abstract: A method and apparatus for testing semi-conductor chips is disclosed. The individual semiconductor chips have I/O contacts. The apparatus is provided with an interposer that has contacts corresponding to the contacts on the semiconductor chip. Both the chip and the interposer contacts can be any known type including metal ball, bumps, or tabs or may be provided with dendritic surfaces. The chip contacts are first brought into relative loose temporary contact with the contacts on the interposer and then a compressive force greater that 5 grams per chip contact is applied to the chip to force the chip contacts into good electrical contact with the interposer contacts. Testing of the chip is then performed. The tests may include heating of the chip as well as the application of signals to the chip contacts. After testing the chip is removed from the substrate.

Abstract: A method and apparatus for testing semi-conductor chips is disclosed. The individual semiconductor chips have I/O contacts. The apparatus is provided with an interposer that has contacts corresponding to the contacts on the semiconductor chip. Both the chip and the interposer contacts can be any known type including metal ball, bumps, or tabs or may be provided with dendritic surfaces. The chip contacts are first brought into relative loose temporary contact with the contacts on the interposer and then a compressive force greater that 5 grams per chip contact is applied to the chip to force the chip contacts into good electrical contact with the interposer contacts. Testing of the chip is then performed. The tests may include heating of the chip as well as the application of signals to the chip contacts. After testing the chip is removed from the substrate.