An electronic musical instrument includes a programmed microprocessor for controlling selected functions of the instrument and a plurality of key and tab switches responsive to a scan control signal repetitively scanning the switches for developing a serial data signal defining operated key and tab switches during each of the scans. An interface circuit is interposed between the key and tab switches and the microprocessor for developing the scan control signal and for receiving the resulting ser...

A circuit for producing a chorus effect in an electronic musical instrument. The circuit includes N separate channels, where N is an integer greater than one, with each channel having an analog delay line to which a tone signal is applied. Each delay line frequency modulates the applied tone signal at a subaudio rate in response to changes in the frequency of clock pulses applied to the delay lines. The delay variations in one delay line are out of phase with the delay variation in every other d...

This disclosure is directed to a quick release device between a personnel boat and an offshore rig employing a magnetic coupling of the permanent type which resists axial separation but permits shear or slide separation.

Production of polyenaminonitriles including those which can be cyclized to very stable poly(aminoquinolines) without the evolution of any small molecules and thus in a manner free of volatiles. The polyenaminonitriles are polymers which have desirable dielectric properties, and include those which can be cyclized to poly(aminoquinolines) without the evolution of volatiles to make defect-free films and composites of similar dielectric properties because of this characteristic.

Production of polyenaminonitriles including those which can be cyclized to very stable poly(aminoquinolines) without the evolution of any small molecules and thus in a manner free of volatiles. The polyenaminonitriles are polymers which have desirable dielectric properties, and include those which can be cyclized to poly(aminoquinolines) without the evolution of volatiles to make defect-free films and composites of similar dielectric properties because of this characteristic.

A harmony generator provides signals for causing the output system of an electronic musical instrument to simultaneously sound a plurality of tones forming a chord, such tones corresponding to keys depressed on the left-hand or accompaniment keyboard of the instrument. The tones sounded by operation of the harmony generator are related in pitch to a key depressed by the operator on the righthand or solo keyboard of the instrument, to harmonize therewith. The harmony generator incorporates a matr...

A seating assembly (10) including a hinge joint (30) rotatably connecting an articulated member (21) to a support member (28). The hinge joint (30) includes a cover (26) having a face plate (32) positioned adjacent to the hinge joint (30) for preventing ingress of foreign materials into the joint from an axial direction. The cover (26) further includes flexible strips (34, 34') extending circumferencially about the hinge joint (30). Channels (56, 56') are attached to the articulated member (21) ...

A wireless communication device (106, 108) incorporates a convenient method for storing/enabling preferred functions which are activated when the communication device is in a standby mode. Recent products and systems adapted to operate with cellular systems have enhanced the functionality of a wireless communication device when a user is not present. For example, the transmission of cellular digital messages, paging messages and facsimiles or computer files by way of cellular networks can be acc...

A bisectioned package is formed from curvilinear cross-sectioned mating components to provide the shape of a sport ball. The sections are formed from tinplate, aluminum, metal or a polymer can or container material and are readily separable. The container is usefully sized to hold a separately packaged serving of snack food. Graphic representations of features of an athletic ball are provided on the outer surfaces of the mating sections, and optionally the inner surfaces of the mating sections a...

A footbridge support is provided which is constructed of aluminum or other lightweight, weather resistant metal frame of bow truss design. Specifically, the footbridge support consists of dual bow truss frames, each supporting opposite side regions of the footbridge. The top rail of the truss frames is of curved configuration, with a given radius of curvature corresponding to the radius of curvature of the footbridge. The footbridge support also includes bottom members and transverse cross-membe...