Abstract: A message waiting notification system comprising a telephone provider's off premise central switching office connected to a Dual Signal Triggered Message Waiting Indicator (DSTMWI) circuit via a telephone line is disclosed. The central switching office transmits predetermined asynchronous Frequency Shift Keying (FSK) signals and/or audible tones indicating different types of electronically stored communication messages awaiting retrieval, such as voice mail, E-mail, fax mail and video mail. Responsive to receiving the FSK signals and/or audible tones from the central switching office via the telephone line, the DSTMWI circuit provides visual notification of any combination of different types of the electronically stored communication messages.

Abstract: An HDTV broadcast transmission system and an analog NTSC broadcast transmission system are carried on the same tower and broadcast to the same area by adaptation of both systems: the NTSC system including: (a) a source of analog NTSC video signals, (b) an NTSC analog video signal exciter producing NTSC IF modulated analog video signals, (c) an NTSC frequency up converter and power amplifier producing NTSC RF modulated analog video signals (NTSC RF signals), (d) an NTSC broadcast antenna and (e) an all band VHF and UHF signal transmission line having an input end and an output end; the HDTV system including: (1) a source of digital video signals, (2) a digital video signal encoder producing IF modulated digital video signals and (3) a frequency up converter and power amplifier producing RF modulated digital video signals (HDTV RF signals) and an HDTV broadcast antenna; by combining the HDTV RF signals and NTSC RF signals at the input end of the transmission line and separating them at the output end and feedin

Abstract: A hydronic heating system having a source of hot supply water and a reservoir of cooler return water, a main hot supply water circulation path (loop) from the supply water line to the return water line including a pump maintaining continuous flow of hot supply water through the main loop, a satellite injection water connection and a satellite return water connection along the main loop, a satellite distribution station including a satellite heating loop, a satellite supply header and satellite return header at opposite ends of the satellite heating loop and a satellite station pump having an input and an output for pumping satellite water from the satellite return header to the satellite supply header, whereby the satellite water flows through the satellite heating loop, a satellite injection water line from the satellite injection connection to the satellite pump input and a satellite return water line from the satellite pump output to the return connection along the main loop, whereby heat from the main loo

Abstract: In textile printing apparatus for printing by a silk screen printing process on a fabric of fleece or cotton pile such as the fabric of sweat shirts or T shirts where the shirt is held on a pallet, a special dry holding plate assembly is attached to the pallet on an area thereof that is immediately adjacent the part of shirt that is to be printed on by the silk screen process for holding the shirt during the process, the plate assembly consisting of a thin plate to which is laminated a plastic film that has molded on the surface thereof a multitude of stems each with a hook at the end thereof, so that each hook catches to fibers of shirt fabric until disengaged by forcible removing the shirt, each stem hook being sufficiently flexibility that it can bend to the force of shirt fabric removal and return to its original shape thereafter, the surface having an array of many hundreds of the stem hooks so that the fabric when placed on the surface and pressed lightly onto it, is engaged by the array of stem hooks a

Abstract: Methods and means of treating a person afflicted with Tinnitus in order to relieve the discomfort and aggravation of the affliction uses apparatus that includes: a metal shell of generally hemispherical shape and diameter about the same as a person's head, nested in a similarly shaped larger shell, the space between the nested shells being filled with a natural, soft, flexible, thermally insulating material that may be animal or plant, the two shells being figures of revolution about a common axis and attached together along the common axis with the material in between, compressed somewhat by the attachment, and a handle, whereby the afflicted person can hold the apparatus against his afflicted ear for repeated intervals to relief is noted by the user after several days of these treatments in order to relieve the discomfort and aggravation of the affliction.

Abstract: A sighting instrument includes a sighting tube mounted on a base, which is attached to a rifle for sighting the rifle by the user with his eye positioned along the optical axis of the instrument and elevation and windage adjustment controls rotate the tube with respect to the rifle about axes transverse to the rifle, one horizontal at the front of the instrument for elevation adjustment and the other vertical at the rear of the instrument for windage adjustment, the elevation adjustment control being at the rear of the instrument and providing the windage axis, the windage adjustment control being at the front of the instrument and providing the elevation axis and both controls: are carried by the base, are flexibly connected to the tube and can be manipulated readily by finger without a tool; and are readily accessible by the user's while the user is sighting the rifle.

Abstract: A hydronic heating system having a source of hot supply water and a reservoir of cooler return water, a supply water line from the source, a return water line to the reservoir and a multitude of heating loops through which water flows to deliver heat, including: a main distribution station having a supply header, main heating loops, and a return header with a pump compelling circulation within the main station so that heat from the source flows to the main heating loops; and one or more satellite distribution stations, each with a supply header feeding water to satellite heating loops, and a satellite return header and pump compelling circulation within the satellite station; and a satellite injection water line and return water line for circulating some hot water from the main station to each satellite station so that heat from said main station flows to each satellite station.

Abstract: A hydronic heating system having a boiler system supplying relatively hot supply water in a boiler supply line to a heating body or to a heat exchanger that feeds hot water to such a body and a boiler return water line feeding relatively cool boiler system water to the boiler for heating in the boiler has a three-way modulated valve in the boiler system for feeding some of the boiler supply water to the return water line to raise the temperature of the relatively cool boiler system water fed to the boiler for heating in the boiler so that it does not "cold shock" the boiler, includes a control system for the valve that varies the flow of supply water fed to return water line return water raised temperature detector providing feedback control to the valve so that: the flow of supply water to the return water line is increased when the return water raised temperature decreases and so avoid "cold shock" of the boiler; and the flow of heat to the heating body is reduced to avoid "hot shock" to the heating body.

Abstract: A hydronic heating system that has a boiler supplying hot supply water, a reservoir of cooler return water, a supply water line, a return water line and one or more heating loops through which water flows from the supply line to the return line, the heating loop including a heating element that is a length of tubing that conducts water from the supply to the return and is mounted in a wall or a floor of an area heated by said system by RFH or RWH has: a thermally conductive plate mounted in the area floor or wall, adjacent a surface thereof and a space defined at least in part by said plate, in which the length of tubing is held and a compliant filler material fills the space between the tubing and the plate, so that the tubing is held in the space in intimate thermal contact with the plate, so that the plate is heated by conduction of heat from the tubing and the plate has a radiating surface that radiates heat to the area.

Abstract: A hydronic heating system having a source of hot supply water and a reservoir of cooler return water, a supply water line from the source, a return water line to the reservoir and at least one heating loop through which water flows from the supply line to the return line, a three-way valve for feeding return water from the return water line to the supply water line to reduce the temperature of water flow to said heating loop and a valve feedback controller for varying the temperature of water flow to the heating loop, has an input to the valve controller representative of outdoor temperature, so that the temperature of water flow to the heating loop is increased or reduced when outdoor temperature falls or rises, respectively.

Abstract: In a dwelling having a forced warm air type central heating system in which the source of heat is the hot gas products of combustion in a furnace, ambient fresh air is introduced into the dwelling to improve the quality of air in the dwelling by a fresh air input duct to the fresh air input of a relatively low temperature flue gas to the fresh air heat exchanger so that the fresh air is warmed and the fresh air output of the heat exchanger is connected by a duct to the forced warm air heating system so that the warmed fresh air is entrained with the air in the system. In a preferred embodiment, the flue gas to fresh air heat exchanger is attached to a section of the furnace flue pipe that is covered by a thermally conductive gas barrier and includes an enclosure for enclosing the outside barrier covered surface of the section of the furnace flue pipe forming an annular space between the gas barrier and the enclosure through which the fresh air flows and is warmed by heat from the flue gas.

Abstract: In a reflex luminous dot firearm sighting instrument that includes a housing having an objective end and an ocular end defining an optical axis, an LED and a battery and control circuit for the LED and a tilted reflecting window or lens in the housing having a reflective coating that reflects the LED light while transmitting target light so that the target viewed through the instrument has a luminous dot of LED light superimposed thereon, a contoured non-reflective surface is provided alongside the luminous dot light path between the LED and the tilted reflecting window or lens inside the instrument for blocking undesired reflections of LED light so that they do not reach the eye.

Abstract: According to an embodiment of the present invention, a high power RF electric signal transmission system such as a TV broadcast system operating in the range of 100 kW at a UHF band includes one or more high power klystrons whose outputs are combined and fed to the first port of a high power Y-junction three port ferrite circulator, the second port of the circulator feeds the broadcast system radiating antenna system, the third port of the circulator feeds a non-reflecting RF load and means are provided for tuning the circulator to compensate for changes in the temperature of the circulator ferrite material, so that the klystron(s) are isolated from reflections from the antenna system.

Abstract: A beacon device for alerting friendly personnel on land, sea or air, from close proximity up to several miles, that the beacon location is also friendly, is contained in an upright case that has an least one infra-red (IR) light emitting diode and a visible light emitting diode clustered together at the top of the case, from which overlapping IR and visible light beacons emanate upward when the case is upright and means including one or more switches on the device or remote from the device are provided for controlling electric power to the diodes. In a preferred embodiment an adjustable collar surrounding the clustered diodes is moveably attached to the case and is moveable downward on the case to intercept less of the overlapping beacon light so that the elevation angle (.theta.) of the beacon is relatively low and is moveable upward on the case to intercept more of the overlapping beacon light so that the elevation angle (.theta.) of the beacon is relatively high.

Abstract: In a three-way, variable position, automatically controlled diverting valve that is provided in the return line to the boiler of a hydronic heating system between the heating loop return and the boiler return, the valve having its input from the heating loop return, its through output to the boiler return and its diverted output to the heating loop supply, so that the valve diverts some of the cooler return water to the boiler hot supply water, diluting the supply water to reduce the temperature of supply water that feeds the heating loop, a method and means of adapting the diverting valve so that the valve cannot be positioned so that the diverted water flow therefrom is closed, including a stop plug inserted into a housing of the valve that reduces the range of said variable positioning.

Abstract: In a luminous dot sighting instrument: dots of different color are produced using different mirror coatings that differentially reflect different wavelengths of light from a single diode or several diodes of the same color, or from different color diodes; dots at different positions on the image of the target view of the instrument are obtained by spacing apart mirror coatings for reflecting light from a single diode, or by by spacing apart several diodes, or a combination of both; dots of different brightness on the image of the target view are obtained by spacing apart mirror coatings for reflecting light from a single diode so that light reflects from the near side and from the far side of the lens and so the far side reflected light is less bright on the image than the near side reflected light; and some embodiments incorporate more than one or all of these features.