Abstract: A method and a keyless entry system are provided for unlocking and/or opening at least one openable member such as a door of a motor vehicle. A key fob transmitter unit including a single manually operable switch or push-button is capable of transmitting a coded signal to unlock and/or open at least one door of the motor vehicle. A receiver module is responsive to the coded signal for providing a receiver signal in response to the coded signal. A plurality of sensors are positioned at different doors for sensing an approach of one or more users of the vehicle or objects carried by the users in the immediate vicinity of the doors and to provide corresponding proximity signals in response thereto. A controller processes the receiver and proximity signals to obtain control signals to unlock and/or open the doors.

Abstract: The present invention relates generally to an apparatus for securely retaining a small battery or electric cell on a printed circuit board, and for providing electrical contacts which engage the battery for use in an electronic circuit. The present invention provides an improved mechanical attachment of the battery retention apparatus to the circuit board by means of a plurality of tabs which extend through and engage the printed circuit board. These tabs are separate and apart from the electrical connections to the circuit board.The apparatus of the present invention provides a lightweight, low-profile, rugged battery retention mechanism capable of withstanding impulse forces. The apparatus is low-cost, easily manufactured, and facilitates easy installation, and is particularly well suited for remote control devices and other hand-held or portable units.

Abstract: A power switch control module for a power window control circuit of a motor vehicle. The control module incorporates a printed circuit board, a plurality of switch contacts secured to the printed circuit board, a plurality of connector terminals also secured to the printed circuit board, a plurality of high current traces formed on an upper surface of the printed circuit board for coupling selected pairs of the switch contacts and connector terminals electrically together, and a switch control. The switch control is mounted in a frame member for pivotal movement relative to the printed circuit board and is movable between up and down positions. When in the up position the switch control electrically couples a first selected pair of switch contacts and when in the down position the switch control electrically couples a second selected pair of the switch contacts. The high current traces are capable of handling about 20-80 amps of current.

Abstract: A carbon monoxide removing catalytic material is disposed in one end of a first hollow column having open ends while porous inactive material is disposed in one end of a similar second column to offer substantially the same resistance to air flow as the catalytic material. There is a bed of regenerable air-drying substance in each column between the other material therein and the opposite end of the column. The volume and resistance to air flow of the two beds is substantially the same. Valve means connect an air stream with said opposite end of the first column and simultaneously connect said end of the second column with the atmosphere. Conduit means connect the other ends of the columns with each other, with an outlet port between the columns connected with the inlet of a pressure regulator.