Abstract: An electric heat sealer comprises a pen-shaped housing including a power supply unit and an end portion, preferably in the form of a tapered socket, containing an electric heat seal unit. The heat seal unit includes a heat sealing tip projecting from an opening in the end portion of the housing. The heat seal unit is movable axially within the housing end portion and includes an electric contact connected to the electric heating element and arranged to engage an electric terminal on the housing to complete an electrical circuit between the power supply unit and the electric heating element. A spring disposed between the one end of the housing and the heat seal unit axially biases the heat seal unit toward the opening in the end portion of the housing sufficiently to separate the contact on the heat seal unit from the terminal on the housing.

Abstract: An apparatus for determining friction between a support roller and a rubber roller comprising an adjustable horizontal seat board, a pivoted stand supporting a pivot spindle in parallel to the seat board, an adjustable horizontal pressure pad for applying even downward pressure, a clamping and driving assembly for clamping two ends of the rubber roller, a support roller for supporting one end of the paper, a paper holding device with rollers below for holding the other end of the paper, a load cell in connection with the paper holding device for conveying a pull from generated friction, and a set of weights for selecting to be placed on the horizontal pressure pad. In use, the rubber roller, evenly pressing on one end of the paper, may be driven into turning at a fixed speed to allow a relatively accurate frictional factor to be detected.

Abstract: An air cooled cushion comprising: a main tubular member including (a) a front tube having a side tube and a dovetail at one end; (b) a plurality of intermediate tubes each formed with a side tube, a dovetail groove at one end and a dovetail groove and another end, the dovetail of one of said intermediate tubes being rotatably engaged with the dovetail groove of adjacent one of said intermediate tubes thereby forming an elongated tubular member with a dovetail at one end and a dovetail groove at another end, the dovetail groove of said elongated tubular member being engaged with the dovetail of said front tube; (c) a rear tube having a side tube and a dovetail groove at one end, the dovetail groove of said rear tube being engaged with the dovetail of said elongated tubular member; (d) a cover engaged with said rear tube; (e) a branch tube engaged with the side tube of each of said front tube, said intermediate tubes and said rear tube thereby forming a backrest and a seat; an upper horizontal tube having a plu

Abstract: An automatic steel ball recollecting apparatus for use in pinball machines comprises a score board, a drive motor, a main frame, a slide board, and steel ball trapping units.

Abstract: A stereoselective fusion glycosylation process for preparing beta-anomer enriched 2'-deoxy-2',2'-difluoronucleosides and 2'-deoxy-2'-fluoronucleosides is provided which requires reacting an alpha-anomer enriched 2-deoxy-2,2-difluorocarbohydrate or 2-deoxy-2-fluorocarbohydrate with at least 3 molar equivalents of a nucleobase derivative at a temperature sufficient to fuse the carbohydrate and nucleobase; in the absence of a catalyst and a solvent.

Abstract: A separate bicycle meter assembly includes a body portion and a keypad portion separately installed on a handle bar of a bicycle with a plurality of electrical wires connected therebetween. The body portion including a meter fixed at a first place on the handle bar, substantially near a middle portion thereof. The keypad portion is fixed at a second place on the handle bar substantially adjacent to the usual gripping position of the biker's hand near a handle grip thereof. With this structure, a biker is allowed to operate the keypad portion without lifting a hand from the handle grip.

Abstract: A mechanism for rocking a chair includes a frame disposed on a base and having a pair of racks, four wheels secured to the chair and engaged with the racks of the frame, a motor disposed on the base, a crank secured to the motor, and a lever having one end coupled to the crank and the other end coupled to the chair, the chair is driven to move in a rocking manner by the motor.

Abstract: An electrical bicycle comprises a frame body, a battery and a rotation controller. Characterized in that a driving mechanism is disposed at the rear triangle supporter and one side of the spindle. The transmission collar and fly-wheel are disposed at both ends of the spindle respectively. The transmission collar is rotated by means of the DC motor, the first and second bevel pinions. The output of the DC motor is reduced by the combination of the first and second bevel pinions. No chain is needed, consequently the defects inherited thereof are omitted. This electrical bicycle is free from noise and pollutant emissions. The driving mechanism can be switched on easily as necessary.

Abstract: A process for removing NO.sub.x and/or SO.sub.x from a gaseous stream by oxidation with a fine flocculent acidic catalyst slurry which is regenerable during the process, in particular by pH adjustment in the absence of added heat. The catalyst slurry comprises MnO.sub.2, Mn.sub.2 O.sub.3, and Mn.sub.3 O.sub.4 having pH in the range from about 0.5 to about 6.5 and is prepared by aerating a divalent manganous salt in an aqueous solution having a pH in the range from about 8.0 to about 13.5.

Abstract: A flow control method (200) is suitable for use with a synchronous modem (101). The modem clocks data signals (107) from the terminal under control of a clock signal (109) supplied by the modem. The clock signal operates at a clock rate. The modem stores the data signals in a buffer (111), and thereupon transmits the data signals to a channel, the channel operating at a channel rate. When the quantity of data signals stored in the buffer exceeds a maximum threshold, the modem removes the clock signal from the terminal, thereby interrupting the flow of data signals from the terminal. When the quantity of data signals stored in the buffer is less than a minimum threshold, the modem again applies the clock signal to the terminal, thereby restoring the flow of data signals from the terminal.

Abstract: A collapsible labyrinth is constructed with a plurality of collapsible separating boards temporarily secured by vertical pivotal posts, two horizontal bars respectively on and under a line of separating boards to secure upper and lower ends of the pivotal posts, and tenons fitting in a mortise in a lower end of each separating board and also in one of tenon holes preset in the ground for securing temporatily each separating board so that the boards can be altered in position to make up a labyrinth route.

Abstract: A camera system in which microwave radiation from objects in a field-of-view is collected by an antenna having beam directions which are a function of the beam frequency. The collected radiation is used to modulate an optical beam to impose upon the beam spectral components which are functions of the frequencies of the microwave radiation. The modulated beam is then analyzed by an optical spectrum analyzer to produce an image of objects in the field of view. In a simple embodiment of the invention a one dimensional image is produced. This one dimensional image can be converted to a two dimensional image by panning the camera system or mounting the camera on a moving platform. In this preferred embodiment the spectrum analyzer comprises an angle-frequency filter (preferably an etalon). The portion of the modulated beam passing through the etalon is directed in a number of directions, the directions being a function of the spectral components of the modulated beam.

Abstract: A process for preparing phycoerythrin from Bangia atropurpurea or Porphyra angusta is disclosed. Spores of Bangia atropurpurea or Porphyra angusta, derived from their thalli, are cultivated under a controlled condition to germinate filaments. Phycoerythrin is then resulted from the extraction of filaments which are processed through drying powder-mill grinding, water or phosphate percolating and ammonium sulfate salting-out. The phycoerythrin is further purified by gel filtration. This process yields the phycoerythrin of 99% purity.

Abstract: An arched hairclip comprises generally an elongate base piece and an elongate tongue piece in arcuate form and pivotally connected with one of their corresponding ends. The base piece has on one end a retainer and the other end a pair of hinge rings. The tongue piece has on one end a buckle member and the other end a pair of the hinge pins, an undulated spring strip integral with and underneath the tongue piece has a cylinder member on free end which displaceably stops against the inward wall of the buckle member providing a great flexibility to the hairclip. This disclosure has been characterized in the adjustable function which prevents a hair bundle therein from being broken by the shearing action and protects the hairclip from sliding off a hair bundle.

Abstract: An air-jet driven dynamic balance test apparatus for testing the dynamic balance of minrotors with minimum interference from external vibration noise. The dynamic balance test apparatus comprise a resilient supporting steel sheet having a horizontal bottom portion fastened to a base and an elongated upright body portion extended upwardly from the horizontal bottom portion to carry the sample to be tested. An air-jet generating device is provided to produce a continuous stream of compressed air for rotating the sample about its central axis. The resilient supporting steel sheet contains a resilient section for increasing sensitivity of said test apparatus. The resilient supporting steel sheet contains a resilient section, which can be the resilient steel sheet itself or in the form of a row of through holes or a corrugated section. A detector is mounted on the resilient supporting steel sheet to detect the vibration as the sample is being rotated during testing.

Abstract: The present invention relates generally to a family of fiber optic laser beam angle delivery devices for use in medical and other applications, and more particularly, to such an apparatus wherein the transmitted radiation is delivered through and at various angles to the central axis of an optical fiber by reflection off of a combination of surfaces.

Abstract: The present invention provides a compound having the structure: ##STR1## wherein R.sup.1 and R.sup.2 are independently the same or different and are hydrogen, an acetyl group; an acyl group having the formula --CO(CH.sub.2).sub.n COCH.sub.3, wherein n=1-3; --CO(CH.sub.2).sub.n COOM, wherein n=1-4 and M is hydrogen, Na or K; or --(CH.sub.2).sub.n COOR, wherein n=1-4 and R is hydrogen, Na, K or an alkyl group having 1 to 5 carbon atoms; a hydroxyalkyl group having the formula --(CH.sub.2).sub.n CH.sub.2 OH, wherein n=1-4; a halo alkyl group having the formula --(CH.sub.2).sub.n CH.sub.2 X, wherein n=1-4 and X is a chloro, bromo, or iodo group; a metal sulfonate (--SO.sub.3 M) wherein M is Na or K; a metal sulfinate (--SO.sub.2 M) wherein M is Na or K; a alkyl sulfonate (--SO.sub.3 R) wherein R is an alkyl group having 1 to 4 carbon atoms such as methyl, ethyl, n-propyl or i-propyl; an alkylsulfonyl group (--SO.sub.

Abstract: A T-shape vortex shedder comprises a bluff body having a width W between upper and lower ends thereof and an extended plate having a length L in the fluid flow direction which is perpendicular to the bluff body. The bluff body and the extended plate form a T-shape vortex shedder with a T-shape cross section. When this T-shape vortex shedder is placed in a fluid motion within a circular pipe, the bluff body is located upstream of the fluid flow, and the extended plate is located downstream of the fluid flow, such that vortex shedding is produced at the upper and lower ends of the bluff body. The T-shape vortex shedder is characterized in that the L/W ratio is approximately 1.56.about.2.0, and the fluid flow produces steady vortex shedding when the Reynolds number of the fluid flow is approximately 2.4.times.10.sup.3 .about.3.2.times.10.sup.4.