Abstract: A device for supporting duck decoys or the like has a base with a slot opening on one end of the base. A latch movably mounted on the base selectively opens and closes the slot at the one end of the base. Decoys having weights attached by lines are suspended from the device by opening the latch and sliding the lines into the slot from the first end. The weights rest on the upper surface of the base. Closing of the latch prevents the duck decoys from sliding off the device.

Abstract: Color television conversion apparatus comprises mechanism adapted for moving a color television record past a pick-up device at a speed suitable for reproducing color television signals recorded thereon substantially in accordance with the field and line standard in the United States of America of 60 filed scans per second and 525 line scans per picture, decoding apparatus adapted to recover the luminance and color-difference signals, and encoding apparatus adapted to re-encode the luminance and color-difference signals in accordance with either the European PAL or SECAM standard to produce a hybrid signal suitable for use in reproducing the recorded images on a European PAL or SECAM receiver but substantially at the United States field and line rate.

Abstract: A system continuously prepares dialysate by mixing water under pressure with concentrate to form dialysate under pressure. This dialysate is supplied on demand to a single patient station or to a plurality of patient stations. The pressure at which this dialysate is supplied to multiple patient stations is controlled so changes in the flow to one station will not change the pressure at which dialysate is supplied to other stations. A pressure regulator senses the pressure of the dialysate supplied to the patient stations and controls a regulator valve connected between the source of water under pressure and a proportioning pump which mixes this water with concentrate. The regulator includes a constant force spring assembly which provides a constant bias against the pressure in a sensing chamber over a range of linear movement of the pressure sensing element.

Abstract: An impeller which is adapted to be affixed to a rotating shaft is provided for aerating a liquid and includes a support disk having a circular outer edge. The support disk is affixed to the rotating shaft in such a manner that it is maintained in a substantially perpendicular relationship with the shaft. A plurality of impeller blades are affixed to the support disk in such a manner as to be spaced from the shaft and extend above the upper surface of the support disk and below the lower surface of the support disk. The impeller blades further extend outwardly from the circular outer edge and have an upper edge which lies in a plane substantially parallel to the support disk. Each impeller blade which is tapered causing the blades to be widest at the portion closest to the rotating shaft and progressively more narrow as the blades extend outwardly from the support disk.