Abstract: The use of 270.degree. Gaussian pulses instead of the selective 90.degree. pulses usual heretofore makes it possible, for many NMR experiments, to achieve a frequency-selective excitation of samples which is largely free from phase errors and which, consequently, does away in many cases with the need for rephasing measures which heretofore were necessary as a rule.

Abstract: This lacing assembly is for use with an article of footwear and includes lower and upper vamp sections connected by a single continuous lace. The lower vamp section includes opposed vamp portions having lace-receiving eyelets including opposed upper end locking eyelets. The upper vamp section includes opposed vamp portions having lace receiving eyelets including opposed lower end locking eyelets. The locking eyelets include a locking member having an eyelet opening and a communicating slit which receives the lace in locked relation. The locking eyelets permit the fit of the lower vamp section to be adjusted selectively and independently of the upper vamp section.

Abstract: This refrigerator unit (10) for storing and serving salads and sandwiches includes an insulated cabinet (12) having a top wall (26) with a front portion (28) providing a cutting board (30) and a rear portion (32) carrying multiple rows of removable food product pans (36) extending into the cabinet. The unit includes a cover assembly (16) providing a fixed, foam-insulated hood (38) and a foam-insulated cover (40) pivoted to the hood for movement from a position enclosing the pan area to a position affording access to the pan area. The inside of the cabinet is provided with a forced air refrigeration system (70) which includes a fan (78) delivering air into a passage (94) which houses an evaporator coil (82) and has an upper end opening (98) for delivering cooled air onto and between the pans.

Abstract: This refrigerator unit (10) for storing and serving salads and sandwiches includes an insulated cabinet (12) having a top wall (26) with a front portion (28) providing a cutting board (30) and a rear portion (32) carrying multiple rows of removable food product pans (36) extending into the cabinet. The unit includes a cover assembly (16) providing a fixed, foam-insulated hood (38) and a foam-insulated cover (40) pivoted to the hood for movement from a position enclosing the pan area to a position affording access to the pan area. The inside of the cabinet is provided with a forced air refrigeration system (70) which includes a fan (78) delivering air into a passage (94) which houses an evaporator coil (82) and has an upper end opening (98) for delivering cooled air onto and between the pans.

Abstract: Method for reducing the content of spurious signals in the output signal of a mixer and mixer designed for carrying out the method according to the invention. When using quadrature mixtures as generators for tunable rf signals it has been found to be a disadvantage that differences in the two channels of the quadrature mixers lead to a high content of undesirable mixture signals. The content of disturbing mixture signals in the output signals of such mixers is reduced according to the invention by feeding the ring modulators of the quadrature mixer with signals differing from pure sine oscillations, which are phase-shifted relative to each other by 90.degree. and which have been determined in such a manner that all pairs of d.c. signals supplied to the two ring modulators result in output signals which have all the same amplitude and each of which has a phase position conforming exactly to the phase position to which the respective pair of d.c. signals is assigned.

Abstract: This coin guiding device (10) includes a coin delivery passage (12), three coin discharge passages (38, 62, and 64). A pivoted gate (24) is disposed in the coin delivery passage (12) having a coin guiding upper edge (32) and opposed coin guiding faces (34 and 36). A gate actuator (M1) selectively moves the gate (24) a first position in which the gate upper edge (32) guides a coin into the first discharge passage (38), a second position in which one of the opposed faces (34) guides a coin into the second discharge passage (62) and a third position in which the other opposed face (36) guides a coin into the third discharge passage (64). In one embodiment a second, similar gate (132) is disposed in first discharge passage (38) for further directing a coin in one of three directions.

Abstract: A driving device in particular for sawing machines comprises two hydraulically rotatable members (23, 24), which are rotationally connected to each other and one of which is adapted to transmit driving power to a shaft (4). The second rotatable member (24) is connected to a first gear (25) so as to be secured against relative rotation thereto, said first gear being in driving force transmitting relation to a second gear (26), which likewise is arranged to transmit driving power to the shaft. Means (27) are provided to make the device operate in either one of at least two operational states, in a first of which the first member (23) drives the shaft in rotation whereas the second gear (26) and the shaft are free to rotate relative to each other and in a second of which the second gear (26) drives the shaft in rotation whereas the first member (23) and the shaft are free to rotate relative to each other.

Abstract: A device for applying tape from a supply roller with an internal central hollow space upon a surface comprises a handle for carrying thereof, an arrangement for holding the supply roller rotatable, a roller being rotatably arranged for applying the tape upon the surface by rolling it on the surface by means of the handle with the tape from the tape supply roller therebetween while generating a force pulling the tape off the roller, and means for generating a rolling friction of the tape supply roller for preventing it from rotating except when a traction is applied on the tape portion leaving the roller. The device further comprises an assembly arranged to form the holding arrangement as well as the rolling friction means by having at least a spring means arranged to cause friction generating biasing of envelope surface portions of the tape supply roller against portions of a frame of the device or members connected thereto.

Abstract: This control valve (10) can be used for reducing the temperature of the discharge gas in the compressor (100) of a refrigeration system. The valve (10) includes a body (12) having inlet and outlet ports (20, 22), respectively receiving refrigerant from one part of the system and injecting it to a point upstream of compressor discharge, a valve seat (32), disposed between said inlet and outlet ports, and a valve member (34) controlling flow through the valve seat. The valve (10) includes a spring assembly (40) mounted in the body (12) and applying a force to the valve member (34) tending to urge the valve member into a closed position and an actuator assembly (50) modulating the valve member (34) in response to a change of temperature in the compressor discharge line. The actuator assembly (50) includes an actuator (52) movable within the body (12), a connector (70) attached to the body, a bellows (60) connected between the actuator (52) and the connector (70).

Abstract: This diverter valve (12) is used in conjunction with a faucet (14) and provides for partial diversion of the water supply to a chemical block feeder (20). The diverter valve includes a body 24 having an inlet (26) an outlet 28 and a connecting intermediate passage (32). A transverse diverter passage (42) on one side of the body 24 communicates with the intermediate passage (32) and the diverter passage is closed by an aligned plunger (50) mounted to the opposite side of the body (24). The plunger (50) is withdrawn from its closure position by pulling outwardly and is maintained in the open position by water pressure to partially divert water into the diverter passage (42) to supply diluted chemical into a sink (16).

Abstract: A cryostat, in particular for superconductive magnets, comprising different components nested in each other, one of them forming an outer shell and at least another one forming a tank arranged in the latter for receiving a coolant, and comprising further tension bars for interconnecting each inner component with its respective adjacent outer component, the said tension bars containing reinforcing fibers and being equipped at their ends with tie rods by means of which they are fixed to the respective component. A bond of high strength is achieved between the tension bars and tie rods due to the fact that the tie rods are provided with an outwardly widening bore, that each end of each tension bar is arranged in the bore in such a manner that the ends of the reinforcing fibers, being spread apart and impregnated with a glue, are located at the wider end of the bore.

Abstract: This roll mounting assembly (100) for mounting an anilox roll between opposed sideframes (12) includes an anilox roll (120) and opposed end bearings (124). Each sideframe (12) includes an open ended flanged slot (130) receiving an associated bearing (124) at each end and a screw clamping assembly (140) is disposed at the other end of the slot (130) to apply a predetermined pressure to bearing (124) through the medium of a clamping pad (148).

Abstract: In NMR pulse experiments transverse magnetization is excited by irradiating the nuclear spin system with a two pulse sequence of a first RF chirp pulse and a second RF chirp pulse, generated after a defocusing time interval .tau.. The pulse duration of the second chirp pulse is half the duration of the first pulse, and the amplitude of the second chirp pulse is approximately three times the amplitude of the first chirp pulse. The first pulse being a 90.degree.-pulse, the second pulse being a 180.degree.-pulse, a refocusing of the magnetization vectors occurs at a time .tau.'=.tau.+.tau.180.degree. after elapse of the second chirp pulse, and acquisition of the resulting echo signal is started at peak of the echo.

Abstract: This selector valve (20) may be used to control flow from a chemical supply (22) and a proportioner (14) attached to a faucet (12). The valve includes a valve body (30) having a central passage (32) receiving a rotatable stem assembly (38) having a stem (40) provided with interior passages (94, 96). The stem passages (94, 96) selectively communicate between an inlet line (18) and any one of a plurality of transverse intermediate passages (44, 46 and 48), or a transverse outlet passage (50), and an outlet line (16) depending on the rotational position of said stem (40). Each intermediate passage (44, 46 and 48) includes a metering adaptor (54, 56 and 58) and the outlet passage (50) also includes a metering adaptor (60). When the stem passages (96) is aligned with the metering adaptor (54, 56 and 58) of an intermediate passage (44, 46 and 48) fluid flows through that adaptor by way of connecting passages (102, 100, 104 and 87) to the outlet line (16).

Abstract: This stero system cabinet and loudspeaker door assembly (10) includes a cabinet body (12) having opposed sides and an open front portion, and a door assembly (14) including opposed mounting frames (30) pivotally connected to the side of the cabinet body (12) for movement about a first vertical pivot axis (38) and opposed loudspeaker panels (40) each pivotally connected to an associated mounting frame for movement about a second vertical pivot axis (50). The mounting frames are swingable about the first pivot axis between a closed position and an open position and the loudspeaker panels (40) are swingable about the second pivot axis so that in the closed position, with the loudspeaker panel facing outwardly, and the open position, with the loudspeaker panel facing outwardly each loudspeaker panel is laterally shifted a distance substantially equal to twice the horizontal spacing between the pivot axes.

Abstract: The package (10) for shipping and storing articles such as cut flower arrangements (14) includes a flower container (12) lower portion is provided with water-containing absorbent foam block (18) receiving the flower stems (38) in pierced relation and a block (20) of non-absorbent, relatively rigid foam, above the absorbent block sealing said block and said flower stems in place. A plastic film vented shell (16) is disposed about the flowers and connected to the container in shrink-wrap relation. The package includes U-shaped insert (22) which holds the container firmly in place in the shipping carton (24) and refrigerated gel envelopes to ensure freshness of the flowers on arrival at their destination.