Abstract: A dispenser 100 for dispensing a chemical product that is dissolved by diluent. The dispenser includes a package 170 having a diaphragm, or fingered collar 180 attached to its opening. The diaphragm 180 has a plurality of flexible members or flexible fingers 185. The dispenser may utilize an injection manifold 109 that is sized and configured to be positioned on a washing machine top proximate the gap between the washing machine's top and lid. Still further, the invention includes a low level chemical product indicator. The indicator includes a focused light source 98a and 99a. The focused light source is a high intensity light emitting diode having a viewing angle of less than 6.degree. and an intensity of above 10,000 mcd. The dispenser also includes an apparatus and method in which a dispensing time of a dispenser is dynamically varied in response to diluent temperature during operation of the dispenser.

Abstract: A dispenser 100 for dispensing a chemical product that is dissolved by diluent. The dispenser includes a package 170 having a diaphragm, or fingered collar 180 attached to its opening. The diaphragm 180 has a plurality of flexible members or flexible fingers 185. The dispenser may utilize an injection manifold 109 that is sized and configured to be positioned on a washing machine top proximate the gap between the washing machine's top and lid. Still further, the invention includes a low level chemical product indicator. The indicator includes a focused light source 98a and 98a. The focused light source is a high intensity light emitting diode having a viewing angle of less than 6.degree. and an intensity of above 10,000 mcd. The dispenser also includes an apparatus and method in which a dispensing time of a dispenser is dynamically varied in response to diluent temperature during operation of the dispenser.

Abstract: In a magnetic disk file head positioning control system, the servo loop controlling the fine positioning of magnetic heads for a particular head track is responsive to a servo error signal. The servo error signal consists of a low pass filtered head position error signal summed with a pseudo velocity signal derived from the same head position error signal.