Abstract: The present invention discloses an over-current protection apparatus, which comprises a current-sensitive element and at least two electrodes. The current-sensitive element is composed of a positive temperature coefficient (PTC) conductive composition, which includes at least one polymer, a conductive filler and a non-conductive filler. The melting point of the polymer is greater then 110° C., and the vicat softening point of the polymer is smaller than 110° C. for improving the conductivity and thermal stabilization of the over-current protection apparatus.

Abstract: A safe dart and dartboard assembly includes a safe dart made of light aluminum and having a front head feed with a block magnet having a front end surface, and a dartboard consisting of an attracting board and a frame having a center recess for receiving the attracting board therein. The attracting board has a plurality of score segments marked with a figure and an empty slots bored in boundary lines between every two of the score segments. The dart can be thrown to fly with accelerated speed owing to the gravity center located at the front end of the dart to stand vertically on the attracting board, even if the dart should fall on one of the empty holes, attracted by the comparatively large segment to stand vertically thereon with the flat end surface of the dart being safe to use.

Abstract: A memory integrated circuit (100) includes a first bank (102) of memory cells and a second bank (104) of memory cells. A sensing circuit (114) is coupled to the first and second banks of memory cells to determine a data state of a selected memory cell in relation to a reference cell (118). A loading circuit (206) is coupled with a sensing circuit and associated with the reference cell to approximate loading associated with the selected memory cell. The loading circuit is shared for sensing memory cells of the first bank and memories of the second bank. By sharing the loading circuit, total device count and manufacturing costs where the memory integrated circuit are reduced.

Abstract: A flash memory device (100) includes a first bank (194) and a second bank (196) of memory cells. Address logic (416, 418, 420, 422) is configured to access read data at a first location in the first bank according to first address data. The address logic is configured to substantially simultaneously access for writing a plurality of second locations in the second bank according to second address data. The address logic is configured to access the plurality of second locations by varying only a single bit of the second address data at a time. This reduces the total number of address signals changing during sector erase in the flash memory device, thereby reducing noise which previously impacted the sense margin and access time in the device.

Abstract: Carbon blacks having a CTAB of greater than 155 m.sup.2 /g; an I.sub.2 No. of greater than 180 mg/g; a N.sub.2 SA of greater than 160 m.sup.2 /g; a Tint value of greater than 145%; a CDBP of 90-105 cc/100 g; a DBP of 115-140 cc/100 g; a .DELTA.DBP (.DELTA.DBP=DBP-CDBP) of 20-35 cc/100 g; a .DELTA.D50 of less than 40 nm; a Dmode of 40-65 nm; .DELTA.D50/Dmode ratio of 0.55-0.67; and an ASTM Aggregate Volume less than 137,000 (nm).sup.3. Also disclosed are rubber compositions containing the carbon blacks which exhibit superior handling and cornering performance properties, increased abrasion resistance and improved traction.

Abstract: A page mode memory senses a large number of bits simultaneously. The associated read current creates a source bias in the core cells which alters the sense margin at the sense amplifier. To address this problem, a memory integrated circuit (100) includes an array (102) of core cells, each core cell having a ground node (220, 222, 224). A ground line (230) couples the ground node of each core cell to a ground potential (Vss) and establishes a variable parasitic potential between the ground node and Vss. For sensing the data state of the core cells, a reference core cell (252) matches the array core cells and has a reference ground node (262). A circuit element (256) is coupled between the reference ground node and Vss to establish a variable reference potential to match the variable parasitic potential.

Abstract: Carbon blacks having a CTAB of greater than, or equal to, 140 m.sup.2 /g; a CDBP of greater than or equal to 115 cc/100 g; a Tint value of greater than or equal to 135%; a .DELTA.D50 of less than or equal to 50 nm; a Dmode less than or equal to 72 nm; and an Occluded Volume Index greater than or equal to 1.30 that impart superior treadwear resistance and abrasion resistance to rubber compounds. Preferably, the carbon blacks of the present invention are further characterized by having a N.sub.2 SA greater than or equal to 150 m.sup.2 /g, and less than 180 m.sup.2 /g; and a DBP of greater than or equal to 140 cc/100 g. Also disclosed are rubber compounds containing the carbon blacks which exhibit increased abrasion resistance and treadwear resistance at normally utilized loading levels. Further disclosed are rubber compounds containing the carbon blacks which exhibit increased treadwear resistance/hysteresis ratios at loading levels lower than normally utilized in the compounding of tire compounds.

Abstract: Novel furnace carbon blacks that impart advantageous properties to rubber and plastic compositions and may be utilized in the place of acetylene blacks. The furnace carbon blacks have an ash level less than or equal to 50 ppm, preferably less than or equal to 30 ppm, most preferably less than or equal to 10 ppm, a sulfur level less than or equal to 50 ppm, preferably less than or equal to 30 ppm most preferably less than or equal to 10 ppm, a L.sub.a less than or equal to 30 .ANG. and a L.sub.c less than or equal to 30 .ANG.. Also disclosed are novel rubber and plastic compositions incorporating the novel furnace carbon blacks which exhibit advantageous properties, particularly in extending the useful service life of power cables produced using the compositions.

Abstract: A closed type built-up receptacle assembly comprised of at least one receptacle retained inside a hole on a wall by a mounting plate, and a face panel covered on said mounting plate, wherein each receptacle is comprised of a receptacle body supported on a compression spring and held in a casing by a holder, a covering covered on the casing over the receptacle body, and two movable plates controlled by torsional springs to close the opening on the covering and the plug hole on the receptacle body.

Abstract: Carbon blacks having a CTAB.gtoreq.(I.sub.2 No.+5 m.sup.2 /g); a CDBP.gtoreq.104 cc/100 g; a Tint of (0.5(CTAB)+70 m.sup.2 /g>Tint>0.5(CTAB)+60 m.sup.2 /g) and an ASTM aggregate volume.gtoreq. 480,000 (nm).sup.3. Also disclosed are rubber compositions in which the carbon blacks are incorporated.

Abstract: A number of resonant tunneling diodes are connected in series with a resistor, a current source or a load device. A bit line is connected to every joint between any two devices through a switch. When properly biased, there can be (N+1).sup.m number of stable quantized operating points which are represented by a combination of m variables (of either voltage or current, where N is the number of peaks of the folding I-V characteristic and m is the number of bit lines. The m bit lines can write in (N+1).sup.m different combinations of inputs. During reading, the quantized voltage (or current) at each bit line is sensed. The number of stable states can be doubled by changing the polarity of the power supply.

Abstract: Carbon blacks having a having a CTAB of 95-120 m.sup.2 /g, a CDBP of 106-120 cc/100 g, a Tint/CTAB ratio of 0.90-1.10, a Skewness D.sub.c of 1.30-1.80 and a Skewness P.sub.s of 1.00-1.50. Also disclosed are rubber compounds containing the carbon blacks which exhibit increased abrasion resistance, lower heat build-up and reduced rolling resistance.

Abstract: A method of abrading a tire tread compound to measure its irregular wear characteristics, includes the steps of abrading each of a plurality of sample wheels in rotating engagement with a respective abrasive member. An outer layer of each sample wheel is made of a tire tread compound to be abraded. The velocity of the sample wheels relative to the velocity of the abrasive members defines a first slip value. Each sample wheel is abraded in rotating engagement with a plurality of abrasive members at the first slip value. The loss of the tire tread compound of each sample wheel at the first slip value is then measured. Each sample wheel is then abraded in rotating engagement with a plurality of respective abrasive members at a second slip value. The loss of the tire tread compound of each sample member at the second slip value is then measured. Each sample wheel is then abraded in rotating engagement with a plurality of respective abrasive members at a third slip value.

Abstract: A structure of retractile umbrella cover and knockdown umbrella stand comprising a box body composed of an upper and a lower box elements, two holder elements, a plurality of supporting stands, cross fasteners and umbrella covers. Each box element upon incorporation with a holder element, some supporting stands and cross fasteners can form an umbrella stand unit, and a plurality of such units can be used in combination by means of connection with connectors for placing of umbrellas in umbrella covers, on hanging of them on stubs on the holder elements. Bottom of the umbrella cover is used to keep water dropped from umbrella. The present invention can be knocked down and have its components kept in the box body which is small in volume and easy in storage as well as carriage since the box is designed with handle for such purpose.