Abstract: A device for loosening and tightening the lids on jars or containers. The device has a handle, and a strap and brace attached to the handle. The strap is placed through the brace and formed into a loop so that it may be slipped over the lid. When a rotational force is applied to the handle, the brace pulls against the strap so as to apply a rotational force to the lid which is greater than the force applied to the handle. A spike extends from the top of the device which is placed through a hole in the strap to secure the strap to the handle. The strap has a series of holes to accommodate a large variation in sizes of lids. For loosening the lid, a counter-clockwise force, relative to the center of the lid when viewed from above, is applied to the handle. For tightening the lid, the handle is reversed and a clockwise force is applied to the handle.

Abstract: An apparatus for presenting radar target return signals having a spectrum of frequency components in a binaural audible form whereby an operator can detect a target or a plurality of simultaneous unresolved targets, determine the direction of each target relative to the radar antenna axis, and identify the type and motion of each target using only his auditory sense. The apparatus utilizes a filter to ensure that all frequency components of the return signal from each target have the same relative time of arrival at the two ears, thus binaurally localizing each target.