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| Number | Title | Issue Date |
| 4912404 | Instrument for tuning and testing radio frequency circuits This instrument for use in tuning and testing radio frequency circuits, comprises an elongated dielectric rod long enough to be grasped by hand, and having a miniature electronic component at one end secured by an adhesive layer and a length of shrink-wra... | 03/27/1990 |
| 4893100 | External manual rotatable drive useable to tune a VCR Disclosed herein is a drive device designed to be detachably mounted on an existing video cassette recorder and playback machine and including a friction wheel designed to frictionally engage a channel tuning wheel already located on the machine as manufa... | 01/09/1990 |
| 4749974 | Double-tuned circuit A double-tuned circuit is provided of the type comprising a primary tuning circuit including first and second resonance coils connected in series and a first switching diode interposed between the connection point of the first and second resonance coils a... | 06/07/1988 |
| 4621539 | Device having rotary knobs extending partially through a plate member In a device wherein electric components and rotary knobs for operating them are disposed in a case with the rotary knobs extending partially through respective slots formed in the upper surface of the case, the improvement comprising the fact that the rot... | 11/11/1986 |
| 4609894 | Tuning device A tuning device has a dial drum rotatably supported in a frame, and a rheostat operatively connected to the dial drum. A knob is disposed in alignment with the dial drum. The dial drum has an outer toothing formed on the periphery thereof. A drive gear is... | 09/02/1986 |
| 4439749 | Electronic tuning block An electronic tuning block including a plurality of screw drive type variable resistors are juxtaposed parallel to one another obliquely on an insulating substrate, and holes for receiving pointers fitted to the screws of the variable resistors and holes ... | 03/27/1984 |
| 4419639 | Key assembly A key assembly for receiving units employed in communications engineering, articularly for television receivers, comprises a plurality of mutually releasable depressible keys adapted to switch on storable, selectively adjustable electrical values supplied ... | 12/06/1983 |
| 4287498 | Tuning arrangement for electrical components An arrangement is provided for mechanically connecting threaded tuning elements of electrical components to rotators driven by automated apparatus. The arrangement includes tuning tools which provide positive rotation to the tuning elements but which perm... | 09/01/1981 |
| 4071982 | Method and implement for cleaning spring-contacts of a tuner A method for cleaning the fixed spring-contacts of a cylindrical, drum-type television tuner or other electrical switch having contact-carrying strips arranged around the circumference of a rotatable drum, in which a cleaning implement is attached to the ... | 02/07/1978 |
| 3990013 | Television tuning system including a tuner with an insulated shaft coupling An insulated coupling usable with a television tuner shaft or the like for electrically isolating the tuner shaft from the chassis of the television receiver includes a pair of flanged insulating bushings pressed into axially extending chambers formed in ... | 11/02/1976 |
| 3968464 | Multiple tuning system A tuner comprising a plurality of cylindrically assembled bases supported between a pair of support plates secured to a rotatable shaft, receiving circuit blocks for receiving waves in different frequency bands being provided in groups on the inner side o... | 07/06/1976 |
| 3944952 | Fine tuning system having a limited user adjustable tuning range A limited tuning range tuning unit useable with a television tuner of the turret type includes a user tunable coil having a tuning slug extending from an end of the tuning unit. A pinion gear engageable by a drive train coupled to a user operated fine tun... | 03/16/1976 |
