A method of manufacture of dynamically balanced molded plastic air movement devices wherein material may be readily added or deleted from inactive surface portions of the air movement devices during manufacture by adjustable pins accessable from the front or face of a mold half.

A self-contained, pilot-operated valve is provided with a plug for controlling the flow of a fluid through an orifice between inlet and outlet openings. A spring located about a stem projecting from the plug urges the plug into sealing engagement with the orifice. By means of a bellows surrounding the spring and having one end connected to the stem, an interior space is created, which space is in communication with the inlet opening through a restricted conduit. The interior space is also in com...

A method for dynamically recording distortion in a transparency includes a support fixture for mounting the transparency for movement about a predetermined horizontal or vertical axis, with a camera disposed in back of the transparency while a test target is disposed in front of it. The test target has a plurality of small light sources arranged in a rectangular matrix pattern toward which the camera is aimed through the transparency. By opening the camera shutter for a period of time as the tra...

In a system for enhancing horizontal detail of a luminance signal, a horizontal peaking signal to be added to the luminance signal is cored with the depth of coring varied in accordance with a coring control potential. To develop the coring control potential, the input luminance signal is capacitively coupled to the input of a signal translator comprising an inverting amplifier with a frequency selective negative feedback path providing the translator with a low pass characteristic and a signal ...

A clocked structured logic array functions in a dynamic, rather than static, mode of operation. The column output conductors and row conductors of the array are precharged to a predetermined voltage level at the beginning of a clock cycle. At the termination of a first phase of the clock cycle, the column conductors are selectively discharged in accordance with information stored in column memory elements. Upon termination of a second phase of the clock cycle, the row conductors are selectively ...

A dynamically stiffened rotary tool construction is disclosed. The preferred stiffening means are a pair of spaced, adjustable, rotatably-mounted cam followers.

An electric dynamically operated storage element comprises two energy stores. Each store has a charging circuit including a rectifying element and a discharging circuit including a controlled respectively variable resistance connected in series with the rectifying element. Also, circuitry is provided for applying periodically repeating phase clock pulses simultaneously to the energy stores through the charging circuits.

Selectively actuatable gates establish coupling paths between corresponding stages of two shift registers while at least one of the registers is being operated in its shifting mode with respect to signals being coupled through such paths. Each register has a full frame of time division multiplex signal storage capacity, and gate selection is accomplished by predetermined control signal patterns in respective control memory loops for the gates. Implementations for discrete device technology and m...

A timing method and timing apparatus are provided for dynamically timing an apparatus. The timing method includes operating the apparatus to be timed, and generating a signal having a zero crossover portion, and generating a timing signal in response to the signal reaching the zero crossover portion. The timing apparatus receives the signal and generates the timing signal in response to the signal reaching the zero crossover portion.

By storing, along with each signal or bit controlling a step to be taken in a process sequence, an additional signal or bit to be applied to the gating terminal or pin of respective ones of a plurality of "and" gates, to the other input terminal of each of which is supplied its respective input signal from aprocess control element, such as a sensor, switch or valve (each such input signal indicating a changed condition in the process which requires a changed process control sequence) any sequenc...