Abstract: A bushing for a hole in a structural member includes a flange with an aperture there through. A plurality of tabs are hinged to the flange at locations around the aperture. During installation of the bushing, the plurality of tabs are inserted into the hole with the flange being located on one side of the structural member. The plurality of tabs then are flared outward on the opposite side of the structural member to prevent the bushing from being extracted from the hole. A plurality of latches retain the tabs in the flared position.

Abstract: An electrical testing device has non-contact AC voltage sensing, single probe contact AC voltage testing and voltage metering functions. Non-contact voltage sensing is used to detect the vicinity of a live AC conductor and single probe contact sensing is used to determine which conductor of a number of conductors in the vicinity is live. More specific information about the magnitude of the voltage can then be determined using both contact probes. The electrical testing device automatically determines the type (AC or DC) and polarity (if DC) of a voltage applied to test terminals, and provides an indication of the voltage range (AC or DC), without the need to operate any switches or other electrical actuators.

Abstract: A housing for a subsurface object locator has a bubble level vial for leveling surfaces using the housing and a scribe tip for marking a surface being probed with the locator.

Abstract: A power hand drill has a subsurface object locator for detecting the presence of an object beneath a surface being probed with the locator. The drill has a housing with a flat accessory mounting surface having a pair of attachment tabs. The locator has a locator housing with a flat base and a pair of key hole slots engaged with the tabs for detachably mounting the locator housing to the accessory mounting surface of the drill housing. The locator includes sensing circuitry contained within the locator housing for detecting subsurface objects and has an object indicator mounted to the locator housing and connected to the sensing circuitry for indicating the presence of a subsurface object. A contoured surface on the locator housing provides a handrest for gripping when operating the drill.

Abstract: An electrical circuit finder has a transmitter which is plugged into one of the circuits of a building's electrical system and a receiver which is used to identify other elements of the circuit such as a circuit breaker, fuse, switch, electrical device or outlet. The transmitter induces in the circuit a high frequency current signal which is modulated at a lower frequency. The receiver, including a sensor wand and a receiver housing, is tuned to inductively detect the high frequency when placed in the magnetic field of the circuit and to produce visual and audible signals to the user which vary in intensity according to the detected signal. The user can thereby use his or her visual and/or audio senses to associate a circuit element proximate to the receiver with the circuit element connected to the transmitter.

Abstract: A voltage tester has an indicator housing and two separate probes connected to the housing by lead wires. One or more visual indicators are provided on the top surface of the indicator housing which wrap around to the sides and front of the indicator housing, and the bottom of the indicator housing has a clip into which the probe handles may be snapped from the sides of the clip so as to hold the probes beneath the indicator housing with the probe tips extending forward of the indicator housing and spaced a distance apart so as to fit into the blade openings of an ordinary wall outlet.

Abstract: A non-contact voltage tester has a self-test feature so that when a switch clip of the tester is actuated, light and sound indicator devices are energized to give a single blink and beep, respectively, following which the tester is ready for probing for a voltage. The light and sound indicator devices also indicate the presence of a voltage when the switch is actuated and a voltage is detected at the probe tip of the tester.

Abstract: A tube bender angle indicator is attached to the handle of a manual tube bender and has a frame to which angle indicia are applied which define an apex through which a pointer is pivotally connected to the frame. A bubble level vial is secured to the pointer so as to indicate that the bend angle has been achieved which the pointer is pointing at when the bubble is in its horizontal reference position.