Other

Westinghouse Electric Corporation

Jack N Holcomb

Konrad K Pangratz

Hans D Sylten

James E Jesse

According to the invention there is provided a concealed radio transmitting device which includes a radio transmitter, an antenna coupled to the radio transmitter, power supply for supplying electric power to the transmitter, an on/off device connected between the power supply and the radio transmitter, and a housing shaped as a tape measure adapted for containing the radio transmitter, the antenna, the power supply and the on/off device, and wherein further the concealed radio transmitting device includes in the radio transmitter an audio input, and a microphone connected to the audio input for transferring audio signals to the transmitter.

Concealed radio transmitter in a tapemeasure

An air conditioning apparatus includes at least one vessel for containing frozen material, at least one duct in thermal communication with the at least one vessel, at least one fan for propelling air through the at least one duct, and at least one battery for powering the at least one fan. The at least one vessel and the at least one duct are preferably in thermal communication with each other through a common wall. Heat fins are preferably provided on the common wall for maximizing the thermal communication. Insulating material preferably covers the at least one vessel and the at least one duct. The at least one duct may have an air entrance port and an air exit port and the at least one fan may include a first electric fan at the air entrance port and a second electric fan at the air exit port. A method of cooling air includes the steps of placing frozen material inside at least one container having an exterior surface, and propelling air into thermal communication with the at least one container over the exterior surface of the at least one container so that heat is transferred from the air into the at least one container.

Ice cooled air conditioner and method

The present invention has a pair of hollow fiberglass ladders supported on top of the roof of a van by a support means including a hollow standard extending up from the roof and located between the inner sides of the two ladders. Antennas are located in the hollow outer sides of the ladders and electrical wiring for the antennas extends through hollow rungs of the ladders and through the hollow inner sides of the ladder, through the hollow standard, and down through an opening in the van roof to radio communication equipment inside the van.

Van-mounted ladder assembly with concealed radio antennas

The present power pack for a portable cellular telephone has a concealed radio transmitter for law enforcement use. The usual battery compartment in the housing of the power pack has a shortened battery compartment above which are located interior walls of the housing which are notched or recessed to support a printed circuit board carrying a radio transmitter. The housing has a shallow recess on the inside in which an antenna is potted. A space inside the housing receives a microphone for the radio transmitter. An opening near the lower end of the housing receives a push button switch for powering the transmitter from batteries in the shortened battery compartment.

Power pack with concealed radio transmitter for portable cellular

A SigSauer pistol is modified to hold on the inside of its plastic handle grip an antenna assembly and spring contacts connected conductively to the antenna assembly. A modified magazine casing in the handle of the pistol has a chamber below a false bottom for receiving batteries and a printed circuit board carrying a radio transmitter and microphone. Electrical contacts on the outside of the magazine casing engage the spring contacts on the inside of the handle grip when the magazine casing is slidably inserted into the usual metal handle body on the pistol. Corresponding contacts on the inside of the magazine casing engage contacts on the printed circuit board that are connected electrically to the transmitter. Downwardly-facing battery switch contacts in the chamber are connected electrically to the transmitter and are positioned to engage respective terminals of two series-connected batteries.

SigSauer pistol with concealed radio transmitter

This is a slidable battery holder for a simulated pager having a concealed radio transmitter. A fixed part of the battery holder is affixed to a bracket inside the housing of the simulated pager and provides a guideway which is open at the lower end of the housing. A pair of cantilevered leaf spring contacts are at the upper end of this guideway. The slidable part of the battery holder has a dielectric slide that is slidably received in the guideway, conductors on one face of the slide which engage the cantilevered switch contacts when the slide is pushed in, and battery contacts beyond the opposite face of the slide for engagement by the terminals of a battery. The battery contacts are connected conductively by their bias springs to the conductors on the slide.

Slidable battery holder for simulated pager with concealed radio

A Browning high power pistol with a concealed radio transmitter. The wood side pieces on the hollow gun handle are recessed to hold a microphone and radio transmitter circuitry in one side piece and an antenna, including its ground plane, in the other. The usual magazine casing is modified to have a false bottom and a compartment below the false bottom for receiving a standard 9-volt battery. The usual spring-operated pusher for bullets is in the magazine casing above the false bottom. The wood side piece holding the battery and its ground plane support a pair of switch contacts that are engaged by switch contacts on the outside of the magazine casing when the magazine casing is fully inserted into the gun handle. These switch contacts, when engaged, connect the battery to the transmitter circuitry and the antenna.

Pistol with concealed radio transmitter

This invention is a case designed to contain a miniature battery of a particular design in connection with a radio transmitter wherein the case provides for quick access through a friction fitting cover and specially designed battery holding elements which permit removal and replacement of the special battery without the need of any tools or special training. The holding portion for the battery consists of two especially designed spring loaded case elements, one of which has a partial shelf to retain the battery.

Transmitter battery case

This is a method and apparatus for performing such method to provide protection to police officers during the interviewing of witnesses and the investigation of matters, such protection being concerned with protection against false charges of police brutality and the like, and from unexpected attack in which a police officer causes his interrogation to be transmitted to a receiver and recording device located within the police vehicle and in which on emergency occurrences a special signal is transmitted which 'locks' into the police vehicle broadcasting system for transmission to police headquarters. This method and apparatus features the use of VHF communications to provide a permanent record of all verbal communications between the police officer and others during investigations.

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Fort Lauderdale, FL, United States of America

Jack N Holcomb