Abstract: Stuck-at fault, shorted and open circuit conditions occurring in the differential inputs to Differential Receivers on a Large Scale Integrated (LSI) chip are detected by a test circuit arrangement fabricated on the chip. The test circuit arrangement includes Pass Gate devices operatively coupled to the differential inputs and an Exclusive NOR circuit (XNOR) coupled to the Pass Gate devices. Pull devices are coupled to the Pass Gate devices and the differential inputs. By activating the Pass Gate devices and applying a test sequence to the differential inputs, the state of the output of the XNOR circuit indicates if an open circuit, stuck-at or short exists in the inputs to the Differential Receiver.

Abstract: Stuck-at fault, shorted and open circuit conditions occurring in the differential inputs to Differential Receivers on a Large Scale Integrated (LSI) chip are detected by a test circuit arrangement fabricated on the chip. The test circuit arrangement includes Pass Gate devices operatively coupled to the differential inputs and an Exclusive NOR circuit (XNOR) coupled to the Pass Gate devices. Pull devices are coupled to the Pass Gate devices and the differential inputs. By activating the Pass Gate devices and applying a test sequence to the differential inputs, the state of the output of the XNOR circuit indicates if an open circuit, stuck-at or short exists in the inputs to the Differential Receiver.

Abstract: A switched reluctance drive is supplied from a supply. The excitation applied to the phase winding(s) has one or more gaps inserted so that, when the phase currents are summed, the resulting supply current has a reduced harmonic content. The supply may be alternating or direct.

Abstract: A seat belt retractor has a spool having seat belt webbing wound thereon mounted for rotation in a frame. A toothed ratchet wheel is connected to the spool and rotates therewith. The retractor has a crash sensor. A locking pawl is arranged to be pivotable from a first position in which it is spaced from the ratchet wheel to a second position in which it engages with the ratchet wheel to lock the spool against rotation, in response to activation of the crash sensor. A pretensioner is responsive to the crash sensor to rapidly rewind webbing onto the spool. A venting arrangement for the pretensioner includes a chamber having an inside side wall and an inside wall. A vent hole is formed in the side of the chamber with a seal for the vent hole. An axially slidable member is mounted in the chamber and biased away from one end of the chamber. The slidable member is connected to the locking pawl, so that it slides in the chamber when the locking pawl pivots.

Abstract: A guide loop height adjustment arrangement for a driver's seat belt has a drive that raises and lowers a guide loop in response to a sensed change in the position of the driver's mirror. The change in the mirror position is indicative of the presence of a seat occupant with a different shoulder height from the preceding seat occupant and therefore causes the guide loop height to be adjusted.

Abstract: A method and apparatus for monitoring low concentrations of certain ions present in a flowing fluid is described in which an isokinetic sample is passed through an electro-separative cell wherein, under the influence of an applied electrical field microgram quantities of the ionic species are quantitatively transferred through a microporous filter membrane. The membrane has a pore size related to cell efficiency.

Abstract: The improved swivel hook assembly of the invention features fixed mounting of a housing portion to a ceiling or other extended surface area, as by a screw assembly or the like, and releasable mounting of a hook portion to the housing for rotation therein. The hook portion can be connected to and rotated in the housing so as to adjustably position an article when connected to the hook portion. Means may be provided for engaging and disengaging the hook portion and housing while the hook portion is in the housing so as to prevent or permit free rotation of the hook relative to the housing.The hook may be divided into a plurality of segments spring biased towards each other into an openable closed loop to releasably secure an article on the hook. Limit means may also be provided on the hook and a push-pull handle may be provided on a closure for releasably sealing the hook in the housing. The assembly thus has improved utility and convenience.

Abstract: An energy absorbing mechanism having an elongated member, one end of which is disposed to receive an impact and the opposite end is free for displacement under said impact. The elongated member is provided with two longitudinally spaced transverse pins and a pair of longitudinal slots within which the pin adjacent the outboard end of the elongated member is free to slide; the other transverse pin is fixed to the inboard end of the elongaged member. An oriented elastomer, preferably a copolyetherester in the form of a belt, operably connects the pins so as to constitute an energy absorber upon displacement of the elongated member responsive to impact. The mechanism can be mounted on an automobile frame and the outboard end provided with a bumper.

Abstract: A shock-absorbing unit comprising a post with upper and lower generally coparallel passages therethrough, e.g., bores, for the reception of individual push rods, the inboard ends of the push rods supporting a rail, an oriented elastomer, e.g., a copolyetherester, connecting the outboard end of the push rods and the post, and means for pretensioning the elastomer, e.g., a wedge, a predetermined amount.

Abstract: A method and apparatus for monitoring low concentrations of certain ions present in a flowing fluid is described in which an isokinetic sample is passed through an electroseparative cell wherein, under the influence of an applied electrical field microgram quantities of the ionic species are quantitatively transferred through a microporous filter membrane. The membrane has a pore size related to cell efficiency.

Abstract: The cutting cylinder has knife segments extending across its periphery in a staggered pattern so that each row winds essentially helically from end to end of the cylinder, thereby providing an effective shearing action as the knife segments cooperate with a stationary shear bar to sever incoming crops into countless short lengths. Air and crop cups located directly below the knife segments capture the short lengths before they can enter the interior of the cylinder and sweep the same through the cutting chamber, blasting them out the discharge spout without the assistance of an auxiliary fan. By keeping the elongated cups substantially parallel to the axis of rotation of the cylinder and perpendicular to the path of travel of the entering crops, regardless of whether the cutting edges of the knife segments are arranged parallel to or slightly oblique to the axis of the cylinder, the full thrust of the spinning cylinder is utilized to propel the crop pieces up the spout for maximum efficiency.

Abstract: A soil treating composition for mixing with water to form an aqueous solution for treating soil is characterized by including a synthetic latex material in a mixture including hydroxy ethyl cellulose, metal salts and powdered citric acid. For compacting earthen type soils, the mixture also includes fermented wort, non-ionic surfactants and vanilla extract. For erosion control, the fermented wort, non-ionic surfactants and vanilla extract are not essential.