Abstract: This invention is directed to polymers (including oligomers) that contain (N-substituted carbamoyloxy)alkanoyloxyalkyl acrylates, to a process for their preparation by reacting the carbamoyloxy alkanoyloxyalkyl acrylates with other ethylenically unsaturated monomers, and to coating, ink, adhesive, and sealant compositions (including the cured coatings, inks, adhesives, and sealants) that are obtained by crosslinking the above compositions by various means. The cured compositions, which are, for example, high-quality industrial finishes, sealants or encapsulants, are made by incorporation of various conventional crosslinking agents and other normally-used formulating ingredients with the polymeric compositions of the invention.

Abstract: When an oscillator is required to operate at high frequencies, there may be more than one frequency that can provide the required 360.degree. phase shift in the feedback signal, and thus more than one oscillating frequency. The present invention eliminates prior art inductors in assuring (for oscillators having an odd number of stages) that there is only a single range of frequencies having the desired phase shift in the feedback loop. In a three-stage oscillator, this is accomplished by designing the circuit to have 120.degree. of phase shift in each stage at the desired oscillatory RF frequency, but 180.degree. of phase shift at near DC frequency.

Abstract: A mechanized power assisted apparatus for flattening and stretching wet tanned hides on a smooth flat horizontal bed of a vacuum hide drier preparatory to drying in the course of leather manufacture. The apparatus includes a support holding a squeegee-type slicker element for positioning closely adjacent to a hide-carrying drier bed. The slicker element has a smooth straight edge which is rotatable in a plane parallel to the surface of the plate. The slicker support is associated with a power travel drive system for moving the support in a plane parallel to and spaced from the surface of the hide-carrying bed and over a hide supported on that bed. A power thrust system is associated with the slicker element for moving the element into and out of contact with the wet hide and for exerting force on the slicker element. Spaced apart controls are provided for actuating the power assist systems for manipulating the slicker element over the surface of a hide in simulation of manual hide application.

Abstract: A single circuit which provides forward biasing, input impedance matching and voltage input limiting to a transistor which has a source, gate and drain terminal is presented. Biasing, input matching and limiting for a transistor is accomplished using two inductor coils, five crystal diodes, a positive voltage source, and three resistors. The forward biasing is achieved using three resistors, and the third, fourth and fifth crystal diode. The third resistor connects the drain terminal of the transistor to the positive voltage source. The second resistor connects the junction between the third resistor and the drain terminal to the transistor's gate terminal. The fourth and fifth crystal diodes are connected in series between the source terminal and the common electrical ground. The first resistor and third diode are connected in parallel between the transistor's gate terminal and the common electrical ground.

Abstract: This invention is directed in general to polymers (including oligomers) that contain carboxyl-terminated lactone acrylates, to a process for their preparation, and to coating, ink, adhesive, and sealant compositions (including the cured coatings, inks, adhesives, and sealants) that are obtained by crosslinking the above compositions by various means. The cured compositions, which are, for example, high-quality industrial finishes, are made by incorporation of various conventional crosslinking agents and other normally-used formulating ingredients with the polymeric compositions of the invention.

Abstract: High solids acrylic coating compositions are formulated by using as a reactive diluent, a low molecular weight hydroxyl-containing acrylic polymer. These polymers are prepared at about 15.degree.-20.degree. C. with anionic initiator concentrations greater than about 5 mole percent.

Abstract: High solids acrylic coating compositions are formulated by using as a reactive diluent, a low molecular weight hydroxyl-containing acrylic polymer. These polymers are prepared at about 15.degree.-20.degree. C. with anionic initiator concentrations greater than about 5 mole percent.

Abstract: Described herein is a process for the polymerization of a reactive monomer derived from the reaction product of a hydroxyalkyl acrylate or methacrylate and a lactone with other ethylenically unsaturated monomers. The resulting polymeric compositions can be made into high quality industrial finishes by incorporation of various conventional crosslinking agents, plus other normally used formulating ingredients.

Abstract: An improved coaxial K inverter is disclosed for use in forming coaxial microwave filters. A filter including a K inverter may be constructed using at least one resonator including a conductor terminated at one end by an apertured plate and coaxially surrounded by a dielectric material. The resonator may be enclosed in a conductive housing electrically coupled to the apertured plate and capacitively coupled at the other end of the conductor to an input terminal for receiving microwave energy. A second conductor terminated at one end in a second apertured plate is positioned within the housing such that the apertured plates are adjacent one another forming a K inverter. The other end of the second conductor is capacitively coupled to an output terminal forming the electrical output from the filter.

Abstract: Pulsed RF operation of a class C biased BJT is enhanced using a three element system to control the BJT emitter current. The three element system includes a transformer having a secondary connected in the emitter current path. Connected to the transformer primary are the other two elements, namely, an impedance and a pulse source. The three elements cooperate to cause the emitter current to substantially conform to a desired or predetermined pulse waveform.

Abstract: An n-way power divider, particularly useful where n.noteq.2.sup.x, includes an input and a plurality of outputs. The power applied to the input is coupled to the outputs, and phase shifters are associated with at least some of the outputs. The phase shift provided by each of the phase shifters is determined such that the reflected power waves from each of the outputs appearing at the input cancel. Because the circuit is reciprocal, it can also be used as a signal combiner with appropriately phased power-wave vectors at the inputs.

Abstract: Phaselock or frequencylock systems employ sampling means and memory means to effect control. Adjustments in phase or frequency are made according to stored signals and the stored signals are updated in accordance with samples of an error indicative signal.

Abstract: The present invention pertains to a non-metallic transmission chain for high loads which comprises a plurality of non-metallic links of a material having a tensile strength of at least 8500 psi and a plurality of associated glass fiber reinforced pins with a tensile strength of at least 1800 psi and flexure modulus of not less than 1,000,000 psi. The superior strength and qualities of the pin provide significant reduction in the undesired side arm flexing of the links.

Abstract: Method and apparatus for automatically adjusting the resolution of a CWFM radio altimeter includes a counter for counting a signal produced by the altimeter having a period relatable to the altitude desired to be measured. Another counter counts the number of pulses of a time reference signal occurring over a predetermined number of periods of the altitude related signal. The number of periods of the altitude related signal over which the time-reference-signal pulses are counted is automatically determined by a circuit responsive to the fullness of the time-reference-signal pulse counter to produce a signal after the counter has reached a predetermined count. The next occurring multiple of the altitude related signal is then determined, and the number of time-reference-signal pulses then counted is divided by the number of the multiple found.