Abstract: A modular actuator has a combination cam member and scissors mechanism in a compact unit that is capable of lifting heavy loads. A pull member is capable of controlling and combining two different mechanisms that travel at different rates through two ranges of motion. The cam member has a profile that is dimensioned and configured to maintain a constant range of motion.

Abstract: A method and apparatus for automatically shutting off a dispensing device when the fluid source tank is empty includes a programmed pump controller in communication with the dispensing device and a flowmeter having a pulse generator. Upon startup of the dispensing device, the controller waits for an initial time period, then periodically determines the pulse frequency which correlates to a rate of fluid flow. The pulse frequency is compared to a calculated average pulse frequency and, if the pulse frequency has changed a pre-selected, pre-determined amount or percentage when compared to the average pulse frequency the dispensing device is shut-off. The change in pulse frequency indicates ingestion of air into the pumping system meaning an empty source tank.

Abstract: Disclosed is a buckle for a belt in which parts of the buckle are provided in two interrelated, yet separate, parts. The first part, secured to one end of the belt, comprises a plate having two extending tangs. The first tang extends downwardly and through the end of the belt to which it is affixed. It engages an aperture in a rigid loop. The second tang extends upwardly so as to engage the apertures in the free end of the belt, after the belt has been inserted through the rigid loop. The rigid loop has an implement formed as an integral part thereof. The implement is inserted into a pouch in the belt.