Abstract: Several methods of controlling a vacuum cleaner (10) using various types of sensors (94, 96, 97, 98) are provided. One method is based on a differential pressure between a suction airflow path and ambient air and includes: detecting the differential pressure, comparing the detected differential pressure to a predetermined threshold, and, when the detected differential pressure is less than the predetermined threshold, initiating a predetermined control procedure. A status indicator (164) is updated based on the detected differential pressure. Another method is based on a level of electrical current flowing through a brush motor (100). Still another method is based on a type or condition of the floor being traversed. Yet another method is based on a distance to a surface of a floor over which the vacuum cleaner is advancing. In another aspect of the invention, a vacuum cleaner is provided.

Abstract: A method and apparatus for selectively sending a false system information tone (SIT) in response to an incoming telephone call is provided. One embodiment of the apparatus includes a telephone line interface, caller identification (caller ID) module, programmable oscillator, display device, and controller. In another embodiment, the apparatus includes a data storage module, telephone line interface, caller ID module, programmable oscillator, display device, controller, and one or more control devices. In various embodiments, the apparatus includes a display remote unit. In one embodiment, the apparatus is a cordless telephone with one or more cordless handsets. In this embodiment, each cordless handset may include a display remote unit.

Abstract: A method and apparatus for selectively sending a false system information tone (SIT) in response to an incoming telephone call is provided. One embodiment of the apparatus includes a telephone line interface, caller identification (caller ID) module, programmable oscillator, display device, and controller. In another embodiment, the apparatus includes a data storage module, telephone line interface, caller ID module, programmable oscillator, display device, controller, and one or more control devices. The method includes the steps of: a) detecting a ring on the telephone line, b) receiving information about a calling party associated with the incoming telephone call, c) determining if a false SIT is to be sent based on the calling party information, and, d) if the false SIT is to be sent, i) determining when the false SIT is to be sent; ii) generating the false SIT; and, iii) sending the false SIT at the determined time.

Abstract: A telephone carrier selection system allows for ease of effective interconnection between various customer telephone lines, local carrier lines, and long distance lines. A controller interconnects with relay switches to automatically select long distance lines when a first number dialed by a user is a “1” or “01,” indicating that a long distance number is to be dialed. The automatic switching feature of the invention can be overridden by an operator on a call-by-call basis by causing the first digit to be dialed a digit that indicates the selection of a specific carrier provider.

Abstract: A method and apparatus for selectively sending a false system information tone (SIT) in response to an incoming telephone call is provided. One embodiment of the apparatus includes a telephone line interface, caller identification (caller ID) module, programmable oscillator, display device, and controller. In another embodiment, the apparatus includes a data storage module, telephone line interface, caller ID module, programmable oscillator, display device, controller, and one or more control devices. The method includes the steps of: a) detecting a ring on the telephone line, b) receiving information about a calling party associated with the incoming telephone call, c) determining if a false SIT is to be sent based on the calling party information, and, d) if the false SIT is to be sent, i) determining when the false SIT is to be sent; ii) generating the false SIT; and, iii) sending the false SIT at the determined time.

Abstract: A method and apparatus for defeating a predictive dialing telemarketing system includes a signal generator in the nature of an oscillator (18) that is capable of creating a 914 Hz sine wave that substantially imitates the first tone of an intercept Special Information Tone used by the telephone network to indicate a nonworking number. The oscillator (18) is amplified with an amplifier (22). The imitation signal is selectively sent in response to the incoming call when a controller (12) closes a relay (20) to connect the imitation signal to the telephone line (16). The controller (12) is prompted to close the relay (20) by an off-hook detector (14) that indicates to the controller (12) when a voice signal is established.

Abstract: In the field of security validators, slot acceptors have been known which transport paper offered as a valid security past a testing station. Previously known acceptors have been susceptible to defeat by mosaics, stringing, shocking, photocopy duplication, and the like. Additionally, known acceptors have operated in an analog mode, relying upon rudimentary test functions. The invention herein overcomes the problems of the prior art by presenting an acceptor having a note path (18) characterized by changes of direction (22,24), and which is secured at each end by means of unique gate assemblies (78,98). A plurality of sensors (148-152) are positioned along the note path and are controlled to take a multitude of data samples from the paper as it passes along the path. The data is digitized (236) and used for solving complex transforms, the results of which are compared against results obtained from known valid securities to determine the authenticity of the paper offered.

Abstract: A remote authorization apparatus for full-serve, self-serve vehicle fuel dispensing pumps. A transmitter carried by a station attendant may be activated to cause the emission of a radio signal. This signal is sensed by a receiver which actuates an associated control assembly to enable the reset mechanism in the fuel pumps for a preset time interval during which a customer may begin dispensing fuel. When the timed enabling signal ends, the pump or pumps which have begun service may continue, while all other pumps are returned to an inactive state. Other pumps may be enabled in the same manner by emission of the radio signal from the transmitter should other customers desire to use the self-serve vehicle fuel pumps, while previously authorized pumps are dispensing.

Abstract: In the field of security validators, slot acceptors have been known which transport paper offered as a valid security past a testing station. Previously known acceptors have been susceptible to defeat by mosaics, stringing, shocking, photocopy duplication, and the like. Additionally, known acceptors have operated in an analog mode, relying uon rudimentary test functions. The invention herein overcomes the problems of the prior art by presenting an acceptor having a note path (18) characterized by changes of direction (22,24), and which is secured at each end by means of unique gate assemblies (78,98). A plurality of sensors (148-152) are positioned along the note path and are controlled to take a multitude of data samples from the paper as it passes along the path. The data is digitized (236) and used for solving complex transforms, the results of which are compared against results obtained from known valid securities to determine the authenticity of the paper offered.