Abstract: A adjustable knee support device for use with a walker employs a support platform, at least one positioning assembly, and a bracing assembly. The positioning assembly includes at least one connector construction and at least one bolstering construction. The connector construction and bolstering constructions are adjustable, allowing the height of the support platform to be changed. The support platform may be alternately used to provide left leg support and right leg support, as needed. The bracing assembly is pivotally attached to the support platform and automatically adjusts to ensure that the device is maintained securely in any chosen orientation. The device may be attached and removed without tools or modification to an existing walker.

Abstract: An improved manually operated signaling device to produce audible sound underwater. An air tight housing comprising a tubular member with end-caps permanently sealing each of its two ends and having contained within a metal echo-chamber fixed at each end of the housing plus a solid metal piston member. The inside diameter at each end of the housing is step-relieved so as to accept and hold fast the outside diameter and depth of the echo-chambers. The echo-chamber is a cylinder having one end open and one end closed with its closed end inserted into the ends of the housing. The outside diameter of the piston is slightly smaller than the inside diameter of the housing. The piston also has a length greater than its own diameter which allows the piston free movement along the longitudinal axis of the housing. A colored thin walled jacket may optionally cover a part or all of the housing exterior. A ring may be connected to the exterior of one of the housing end-caps for attaching a lanyard.

Abstract: A device for slicing a bagel equally in half, or in thirds, or in quarters without having to make any adjustments for such desired variations. The device is simple in construction and serves to operably guide a knife through a bagel. Other foodstuffs such as buns, rolls and muffins including soft textured foodstuffs can be accommodated without deforming or destroying the foodstuff. The device is comprised of a rectangular base having four side guide rods at right angles to the base and placed so as to hold a foodstuff central to the width of the base. Additionally, a set of paired end cradling rods at each end of the base taper outwardly as they extend upwardly. The end cradle rods accommodate bagels of various diameters thereby preventing end to end movement of a bagel while it is being sliced. The end cradle rods serve to guide a knife blade between the slots formed by the adjoining, paired cradle rods.

Abstract: A toy floats on the water surface of a pool. A hydraulic jet propulsion unit is connected to the bottom face of the toy. The propulsion unit includes a rigid tubular member with a straight central portion, a forward right angle elbow and a rear exhaust tube extending at an acute angle to the central portion. The forward elbow is connected by a flexible hose tether to a water source. Thee hose is anchored at an intermediate point to the pool bottom. The rigid tubular member is rotatably mounted in a housing so that it is free to rotate about the long axis of its straight portion. Water forced through the rigid tubular member is ejected from the exhaust tube, forcing the toy forward. When the elbow is vertical, the toy moves straight forward. When the elbow is rotated to the left or right by the pull of the tether, the exhaust tube also rotates to left or right causing the exhaust jet to leave the stern at an angle, turning the toy as it moves forward.