A fastening system and method to secure a light panel to the rear of a picture frame through the use of dual locking refittable fasteners in combination with retainers of the frame. The versatile thin illumination assembly system, consisting of the combination of the light panel and mounting system, can be applied to most existing display frames, thus converting a non-illuminated picture frame to an illuminated picture frame. The system when coupled with a frame creates an open backing that main...

Variable-gain amplifier stages, such as may be used in a television receiver intermediate-frequency (IF) amplifier, each comprise a pair of transistors connected as an emitter-coupled differential amplifier with resistive collector loads. An electrically controlled conductance is connected between the collector electrodes of the transistors, to shunt the resistive collector loads in controllable amount to set the voltage gain of the stage. The electrically controlled conductance in each variable...

A golf cart towing device includes a bracket assembly which is selectably attached along a tongue of a golf cart and adjustable to fit cart tongues of various breadth. A connector rod is angularly adjustable relative to the handle and includes a hook end for engaging an eyelet extending from a belt worn by the golfer. A releasable latch on the hook end maintains the hook end within the eyelet. The various adjustments of the bracket and/or the connector rod allow the golf cart to be effectively t...

An improved substrate for a battery electrode is disclosed. The substrate is in the form of a reticulated lattice bordered by a current conducting perimeter and having a current connection or tab on the perimeter. The lattice is comprised of first current carrying portions which converge toward an imaginary point outside the perimeter of the substrate, which point can lie on an imaginary bisector to the lattice. Second current carrying portions intersect the first current carrying portions and e...

A current mirror having an amplification factor K providing a photocurrent compensation current to a node having a mismatch of junction photocurrent. The load device on the input leg of the current mirror has an area 1/K times the device width of the larger device junction area at the node and a device width ratio with drive device of the input leg of a current mirror equal to the ratio of mismatch J at the node.

A metered fluid-pumping system includes an upright support which may be selectively raised or lowered between two extreme positions. An air-operated pump is attached to the upper portion of the support and is adapted to be lowered within an open-topped bulk fluid container. A flexible hose is attached to the output of the pump to enable selective dispensing of metered amounts of fluid from the bulk container. Structure is provided to meter selected amounts of fluid pumped from the container acco...

Methods and apparatus for continuous real-time measurement of bulk material using gamma irradiation. A multi-energy gamma attenuation device monitors bulk material flow and produces a spectrum that is compared to a baseline spectrum to produce a relative weight/impurity/component ratio. A sample analysis, in combination with measurement of the relative weight/impurity/component ratio of the sample, allows for determination of the coefficients for determining the absolute weight/impurity/componen...

A dry break coupler of a coupling device has an adapter connected thereto in an arrangement in which the adapter must be disposed within the coupler in the position in which it is locked to the coupler before a rotatable shaft can be rotated to initially lock the adapter to the coupler. The coupler has a poppet valve, which opens a valve in a passage in the adapter when the poppet valve is opened to provide communication therebetween, movable to its open position by the rotatable shaft only afte...

A coating composition and method are disclosed for reducing vibration and noise when applied to a structure such as in transportation and industrial equipment systems. The coating composition of the present invention includes a viscoelastic material with discrete stiff fibers suspended therewithin. The viscoelastic material is preferably selected from acrylics, silicones and polyurethanes, and the discrete fibers are preferably carbon fibers. The manipulation of the fiber volume fraction within ...

In a gas phase olefin polymerization using a transition metal compound/aluminum alkyl catalyst system, polymerization can be terminated rapidly by injecting an amount of carbon oxide and then restarting efficiently by addition of an amount of aluminum alkyl.