Abstract: The present invention is a programmable dispenser for dispensing the appropriate amount of cleansing agents during peak period and adequate amount of cleansing agents during off-peak period without compromising the overall bacteria kill rate. The dispenser features a microcontroller coupled to a solenoid valve for allowing users to program the dispensing of cleansing agents over a predetermined number of peak-hour intervals and at least one cut-off period. The dispenser of the present invention also incorporates a float subassembly within a bucket for receiving measured amounts of cleansing agents and accomplishing two important functions in response to the actual usage of urinal: (1) dosing the urinal upon demand when the urinal is flushed, and (2) dosing the urinal directly when the urinal is either not flushed or flushed infrequently. Dosing on demand is carried out when a portion of the flushed liquid from the flush pipe is diverted to the bucket over a connecting pipe and an elbow channel.

Abstract: The present invention describes an apparatus for achieving power amplification in general press and elevating systems with enhanced control and without the disadvantages of the pneumatic and angle-linked devices. A motor is coupled to a screw and nut for delivering force to at least one transfer piston within a fixed volume at the base of a larger piston. Amplification of power is attained when transfer piston displaces the fluid within the fixed volume. A pressure sensor in the fixed volume and coupled to the motor provides the closed loop feedback required of the control of power amplification. The change in force exerted by the transfer piston has linear relationship with the change in power output of the larger piston.

Abstract: The present invention is a method and apparatus for controlling the dissemination of digital information. Digital information is structured logically to incorporate usage history and allowable access window before it is encrypted in a header portion and a body portion. The end user accesses the digital information with a tamper-proof controlled information access device by decrypting the digital information. A controller disposed in the controlled information access device permits end users to access transparently uncontrolled information. Controlled digital information will be accessed as long as the conditions specified by the information provider are met. In one embodiment of the present invention, controlled information is disseminated in an off-line manner while the second embodiment of the present invention disseminates controlled digital information in an on-line manner.

Abstract: A small and easy to fabricate programmable current source correction circuit. The correction circuit consists of a first current division circuit for establishing a reference current; a programmable correction current circuit for establishing the amount of correction current required; a second current division circuit for further reducing the reference current into smaller step or resolution; and a source-sink controlling circuit for determining whether the present invention is to operate as a current sink or current source. The present invention consists of substantially less number of circuit modules and can be fully integrated into a single chip which requires substantially smaller chip area and can operates at a substantially higher frequency compared to prior art.