Abstract: Method and apparatus for continuous pH control of aqueous liquid systems, particularly biological and biochemical systems such as stored blood, by sorption of H.sup.+ andwith a passive ion acceptor material isolated from, but in contact with liquid of said system in a selectively permeable membrane packet. Liquid systems of interest are those with an initial pH in the range of from about 4.5 to 9.0, and the pH of the system is maintained by the invention at its initial value, or brought within, and maintained in, the range of from about 6.5 to 8.0. The ion acceptor material is selected from an inorganic, relatively water insoluble metal oxide, hydroxide, phosphate or silicate matrix, which matrix is capable of maintaining a quasi-equilibrium pH state with the aqueous liquid system. The matrixing metals are preferably selected from Ti, Al and B.

Abstract: A self-oscillating, push-pull inverter circuit is described wherein positive feedback signals are provided alternately to the bases of a pair of switching transistors by a single miniature saturable current transformer. The circuit performance relies on a pair of diodes having special characteristics connected across the base-emitter junctions of the respective switching transistors.

Abstract: Improved fluid for intraocular infusion and irrigation and methods of preparation and use. The fluid is an aqueous physiologic saline solution containing from 2-15% by weight of an artificial, substantially non-antigenic oncotic agent of a colloid type, such as dextran having an average molecular weight in the range of from about 1,000 to 40,000. The solution also contains NaCl, CaCl.sub.2, dextrose and sodium bicarbonate, and is adjusted to have an osmolarity in the range of 260-400 mOsm/L and a pH in the range of from about 7 to 7.8. The solution may be used as a replacement fluid for the aqueous or vitreous humor, for the reestablishment of intraocular pressure during or after surgery, as an irrigating fluid during phacoemulsification, and generally for external eye surface rinsing during cataract surgery. The solution results in improved lens maintenance and corneal endothelial function during procedures such as vitrectomy, irrigation and aspiration of cataracts, and in phacoemulsification.

Abstract: A device for automatically returning a transmission control to neutral including a seat operated linkage connected to a camming member which in turn is connected to a transmission control member whereby in one position of the camming member the transmission control member is free to be placed in either a forward or reverse position and in a second position of the camming member the transmission control member is confined to a neutral position.

Abstract: Device and method for reading indicia embossed, punched or impressed in a sheet of base material, such as credit-type cards and the like. The reader employs a head having a plurality of movable fingers disposed to sense the holes or embossing when the card is moved relative to the head. The fingers carry light guides thereon which are spaced from and disposed to transmit light from a fixed source. A light cut-off shield is disposed between the source of the light and the light guides to intercept and prevent or permit transmission of the light when the fingers pass over the embossed indicia or holes. Light detectors are disposed at the opposite terminus of the light guides to detect the presence or absence of light and produce electrical pulses corresponding thereto. These electrical pulses can be used or processed in any circuitry as information input correlating to the indicia on the base material, e.g.

Abstract: A rotating lamp fixture including a spherical shell member rotatably supported on a vertically extending support member, a platform disposed in the shell member, a drive motor mounted on the platform, a stationary gear secured to a vertical support member, the shell member being rotatably mounted on the support member, the motor being drivingly connected to the stationary gear and being effective when energized to rotate the platform and the shell in which it is supported about the vertical support member, and a light bulb socket suspended within the shell member.

Abstract: A weighted golf club head having disposed therein a plurality of small weights and positioned in a plurality of rows, said rows of weights being disposed substantially parallel to the club head face and at least one of said rows of weights spanning more than half the width of the club face in order to tend to equalize the energy transmitted to a golf ball during a swing of the golf club regardless of where along the club head face the ball comes in contact therewith.