baber/WOPTO huggingface dataset:
Patent KR-790000805-B1 (KR)
Title: Process for producing acrylic acid
Inventor: WATANABE YOSHIHISHA
Filed: 1974-01-01
Granted: 1979-07-12
Abstract: Acrylic acid was prepd. by vapor-phase contact oxidn. of CH2:CH:CHO at 200-350≰C under 0.5-10 atms. in the presence of catalyst comprising (1) Mo oxide 10, (2)Nb oxide 0.001-70, (3)Si oxide 2.5-500, and(4) Cu, Zn, Ti, Mn, W, Fe, Co, Ni, Cd, Ga, Hg, Th, or B oxide 0.01-60. Thus, paramolybdenic acid ammonium was mixed with niobium oxide, ferrous oxalic acid, and silica sol. The product was impregnated into the porous α-alumina carrier and sintered in an electric furnace to give the catalysts.
Patent KR-800001333-B1 (KR)
Title: Washing and/or bleaching compositions containing silicate cation exchangers
Inventor: SMOLKA H
IPC: C11D3/12
Filed: 1974-04-12
Granted: 1980-10-28
Abstract: A method of washing textiles and compd. is described. lg of anhyd. active substance per liter of at least one finely-dispersed, water insol. Silicate compd. having a Ca-binding power of at least 50mg CaO/gm of anhyd. active substance and having the formula,(I)combined water not shown, where M is a cation of the valence n, exchangeable with Ca, x is a no. of from 0.7 to 1.5, Me is Al or B, and y is a no. from 0.8 to 6.
Patent KR-860000582-B1 (KR)
Title: Process for the preparation of substituted phenoxybenzyloxy carbonyl derivatives
Inventor: FUCHS RAINER
IPC: C07C67/03
Filed: 1978-02-10
Granted: 1986-05-17
Abstract: Phenoxybenzyloxy carbonyl derivs. (I) are prepd. for use as an insecticide. 2-Fluoro-5-phenoxy-α-cyanobenzylalcohol and α-isopropyl-4-chlorophenyl-acetylchloride are dissolved in toluene, and then pyridine in toluene is added and stirred. The organic phase is septd. from this reaction mixt., and is washed with water. This is dried and the solvent is removed by distn. to give 2'-fluoro-5'- phenoxy- α'-phenoxy- α'-cyanobenzyl -isopropyl-4-chlonophenyl acetate.
Patent KR-820002284-B1 (KR)
Title: Output circuit of tuner
Inventor: NISHIMURA DAKESHI
IPC: H03D7/12
Filed: 1978-09-06
Granted: 1982-12-13
Abstract: An output circuit of VHF tunner using FET devices in a mixed terminal has a good characteristic of beat and has a high gain.  The dual gate MOSFET devices are used in the mixed terminal of VHF tunner and intermediate frequency signal is produced by these devices.  The second dual gate MOSFET device combines these signals through a filter of double tuned circuit and then output circuit having a amplified characteristics is offered to gain a desired high level.  The frequenvy conversion system which combines an output signal to an image circuit of a television set is applied.
Patent KR-790001651-B1 (KR)
Title: Process for preparation of cephalosporin antibiotics
Inventor: MARTIN CHRISTOPHER COOK
IPC: C07D501/60
Filed: 1979-10-06
Granted: 1979-12-01
Abstract: Cephalosporin antibiotics (I;R1 = furyl, thienyl, phenyl; R2 = C1-4 alkyl, C3-7 cycloalkyl, or phenyl) and its non-toxic derivs. were prepd. by treating compd. (II; R11 = H carboxyl protecting group) with carbamoyl group forming agent followed by elimination of carbamoyl protecting group or N-protected group.  The carbamoyl group forming agent is forming carbamoyl oxymethyl group or N-protected carbamoyloxymethyl group at 3-position.
Patent KR-830001321-B1 (KR)
Title: 유리 표면 처리방법
IPC: C03C15/02
Filed: 1980-07-26
Granted: 1983-07-09
Abstract: 내용 없음.
Patent KR-840002065-B1 (KR)
Title: Process for preparing phenyl propargyl amine derivatives
Inventor: LEFTWICK ALLEN PETER
IPC: B29C48/305
Filed: 1981-05-09
Granted: 1984-11-09
Abstract: The title rodenticidal amine I was prepd. by three methods and converted to its acid addn. salts. 3,5(F3C)2C6H3I was successively treated in HNEt2 with CuI, (Ph3P)2PdCl2, and HC:CCH2OH and the mixt. was kept at 25-30≰C for 4 hrs. This gave 3,5(F3C)2C6H3C:CCH2OH, which was then treated with Br2-Ph3P in MeCN to give 3,5(F3C) 2C6H3C:CCH2Br(II). Alkylating 4-tert-butylpiperidine, for 48 hrs. with II in Me2CO contg. K2CO3  gave I, which had an oral LD50 of 68 mg/kg(mice). I HCl had an oral LD50 of 23 mg/kg.
Patent KR-870000134-B1 (KR)
Title: Rocket vehicle
Inventor: DEANS ARNOLD
IPC: F02K9/90
Filed: 1981-11-14
Granted: 1987-02-12
Abstract: The guidance system for a rocket propelled progectile travelling at relatively low speeds uses an arrangement of fins at the rear adjacent to the discharge point of the propellant gases. These rear fins consist of inclined blades acting as spoilers to control the direction of flight and wing blades to cause rotation of the gas jet to produce a spin about the central axis. Three spoiler blades are arranged symmetrically around the jet nozzle and controlled by a system for producing swing about an axis at right angles to the central axis, for steering.
Patent KR-870001264-B1 (KR)
Title: A method for producing horizontal bar
Inventor: YAMAZAKI KEIICHIRO
IPC: E06C7/08
Filed: 1981-12-19
Granted: 1987-06-30
Abstract: The railing includes at least one horizontal bar and one vertical bar.  The method of construction involves forming a first outer protrusion on the vertical bar and inserting the vertical bar into a hole formed on a vertical connecting part of the horizontal bar.  A second, inner protrusion is formed on the vertical bar by plastic working such as welling, rib-forming and bending operations.  The vertical connecting part of the horizontal bar is gripped or pinched between the inner protrusion and the outer protrusion so as to interconnect the horizontal bar and the vertical bar.
Patent KR-850001827-B1 (KR)
Title: Rear suspension system for two-wheeled vehicles
Inventor: FUKUCHI KIYOSHI
IPC: B62K25/26
Filed: 1982-10-18
Granted: 1985-12-26
Abstract: The rear suspension system comprises a rear fork member having a front end pivotably connected to the body frame and a rear end which rotatably supports the rear wheel. An elastic band member is stretched between the rear fork member and the body frame. With this arrangement, comfort is ensured, while at the same time weight  is reduced.
Patent KR-910001638-B1 (KR)
Inventor: HEUTREL CLAUDE
IPC: G21C3/32
Filed: 1983-01-17
Granted: 1991-03-16
Abstract: 내용 없음.
Patent KR-890001438-B1 (KR)
Title: Apparatus for supplying a working fluid and a wire electrode to a work portion of a wire cut electrical discharge machine
Inventor: INOUE KIYOSHI
IPC: B23H7/02
Filed: 1983-02-03
Granted: 1989-05-03
Abstract: The appts. for machining a conductive workpiece by electrical discharge includes supplying means for a wire electrode and a dielectric coolant, supporting means for a wire electrode, a cooling device for a power source part, and a position adjusting device for a movable or controllable nozzle.  A pair of housing members (5,5') are disposed above and below the workpiece(3), each of which has a connector for a coolant feed pipe (53), an upper opening (51), and a lower opening (52) on which a cooling nozzle (7) is mounted.  A guide die holder (6) supported on a movable table (86) is disposed in the housing member so that the wire electrode may be supported by a guide die (61).
Patent KR-880002572-B1 (KR)
Title: Magnetic tape deck
Inventor: MUELLER JOHANNES C A
IPC: G11B15/18
Filed: 1983-04-12
Granted: 1988-11-30
Abstract: A tape deck (4) includes magnetic heads (7A, 7B) movable in a circular path.  A drum (5) guides a wrapped section of tape, which is withdrawn from a cassette (1) to form a playing loop.  The loop includes two guides (8A, 8B) for guiding the loop up and downstream of the drum.  Two guide supports (10A, 10B) are movable between inoperative and operative positions.  A fast winding mechanism includes a guide support for guiding tape from the cassette into an outside fast-winding loop.  A positioning device moves the guide between operative and inoperative positions. Electrically conductive drain elements (16A, 16B) are arranged on the playing loop guide supports.
Patent KR-890002865-B1 (KR)
Inventor: ISHIDA KATSUYUKI
IPC: D06F37/14
Filed: 1983-10-17
Granted: 1989-08-05
Abstract: 내용 없음.
Patent KR-900000556-B1 (KR)
Title: Washer dehydrater
Inventor: KOSAKI YOSHIO
IPC: D06F13/02
Filed: 1984-08-23
Granted: 1990-01-31
Abstract: A landry washing and spin-drying machine comprises a rotatable tub housing, a rotatable container like agitator.  The machine control system oscillates the agitator for a pre-rinse cycle which is shorter than the time of a wash cycle when the agitator is also oscillated. In the spin-drying cycle the tub and agitator are rotated in unison in one direction at high speed. Specifically in the prerinse cycle the agitator rotation in reverse directions comprises three-quarters to four complete revolutions between reversals.
Patent KR-910004432-B1 (KR)
Inventor: IWAO JUNICHI
IPC: A61P3/14
Filed: 1984-12-26
Granted: 1991-06-27
Abstract: 내용 없음.
Patent KR-920001789-B1 (KR)
Inventor: DANIMOTO HIROTOSHI
IPC: B01J31/16
Filed: 1985-02-04
Granted: 1992-03-02
Abstract: 내용 없음.
Patent KR-930008570-B1 (KR)
Title: Head moving apparatus using stepping motor
Inventor: TSUKAHARA NOBUHIKO
IPC: G11B21/08
Filed: 1985-03-15
Granted: 1993-09-09
Abstract: A signal transducing head moving apparatus using a stepping motor which comprises a reversible stepping motor (20) for moving a head and a motor drive control means (30, 40) for driving the stepping motor (20) in alternate forward and reverse directions through switching of excitation phases of the motor (20) after the motor (20) has been driven in one direction, thereby eliminating errors of the step position of the stepping motor (20) due to a hysteresis characteristic thereof. The head thus can be stopped at the same position irrespective of whether it is accessed in the forward or reverse direction.
Patent KR-890004230-B1 (KR)
Title: Light disk memory
Inventor: DAKKAOKKA DAKKASI
IPC: G11B7/257
Filed: 1985-08-14
Granted: 1989-10-27
Abstract: This invention is related to an optical memory which can store and retrieve data by being exposed to light, esp. laser. The optical memory consists of a substrate carrying a recording layer comprising a chemically stable dielectric and a semiconductor material capable of a change in optical reflectivity when exposed to electromagnetic radiation.  Semiconductor material is pref.  one or more of Br2O3, Sb2O3, PbO, SiO2, Ta2O5, BiF3, LiF, PbF2, MgF2, BaF2, and CaF2.
Patent KR-890004256-B1 (KR)
Title: Magnetic recording carrier
Inventor: KIMURA AKIHIRO
IPC: G11B5/72
Filed: 1985-09-17
Granted: 1989-10-28
Abstract: The recording material has a base of Al that has a surface coating of Ni-P material.  On the base, a thin magnetic film is coated with Co- P, Co-Ni, Co-Ni-P, Co or other similar material. The surface of the magnetic film is protected by a layer of material that has good lubrication properities.  Typically the corrosion resistant layer has a thickness of 1-7nm and the lubricatnt film has a thickness of 5-200 nm.  The advantage of this recording material is to be able to minimize damage to magnetic film from corrosion or scratching.
Patent KR-900001098-B1 (KR)
Title: Carbon steel having a property of high hardening
Inventor: AN DONG-HUN
IPC: C22C38/22
Filed: 1985-11-14
Granted: 1990-02-26
Abstract: A carbon steel with high hardenability is characterized by being composed of about 0.8% C, 0.1-0.25% Mo, 0.4-0.6% Cr, 0.4-0.6% Si and inevitably added impurites.  Si induces synergistic effect with Mo and Cr, so the carbon steel needs less alloying element but doesn't lose its own properties.
Patent KR-930007691-B1 (KR)
Inventor: SMITH ROBERT A
IPC: C08F236/10
Filed: 1986-03-06
Granted: 1993-08-18
Abstract: 내용 없음.
Patent KR-920006665-B1 (KR)
Inventor: HONEMANN RUDOLF
IPC: F16D13/64
Filed: 1986-03-14
Granted: 1992-08-14
Abstract: 내용 없음.
Patent KR-900000234-B1 (KR)
Title: Steel sheet for making cans,cans and a method making cans
Inventor: TERAYAMA KAZUKIYO
IPC: B65D8/16
Filed: 1986-04-15
Granted: 1990-01-24
Abstract: A can comprises a wall formed from a thin sheet of steel and having an inner surface coated with a layer of a thermoplastic resin (I) which is in turn coated with a foil layer (II) of Al and/or Al-alloy.  Also included is a thermosetting resin layer (III) on layer (II). Layer (I) has a thickness of 1-30 microns, (II) a thickness of 1-30 microns and (III) a thickness of 1-15 microns.  Layer (I) is 3-100 microns thick and layer (II) is 5-100 microns thick.  The sheet of steel is coated on the other surface for use as the outer surface of the can with a lubricant film of tin, zinc alloy, an organic substance on a film of metallic Cr and/or hydrated Cr oxide.  The cans are used for foodstuffs or carbonated drinks.
Patent KR-890002679-B1 (KR)
Title: Process for yeast extract from residue
Inventor: SIN JAE-IK
IPC: A23L1/28
Filed: 1986-06-07
Granted: 1989-07-24
Abstract: The method of preparing flavoring liquor from yeast extract residue comprises; (a) adding water to saccharomyces cerevisiae up to 15% of dry weight for 1800g yeast suspension; (b) adding 18g of sodium chloride and 54g ethylalcohol to the yeast suspension; (c) auto- digesting in a reactor at 50-55≰C for 24hrs; (d) adding 10% HCl to the precipitate obtained by centrifugation and dissolving at 85-105≰C for 2-5hrs.; (e) adjusting the mixture to pH 5.0 with Na2CO3  and filtering.
Patent KR-940001607-B1 (KR)
Inventor: FUKUZAWA KEIJI
IPC: H01Q21/06
Filed: 1986-07-22
Granted: 1994-02-25
Abstract: 내용 없음.
Patent KR-890004992-B1 (KR)
Title: Electronics lumiescent monitor circuits
Inventor: PARK JONG-WOON
IPC: G06F3/147
Filed: 1986-10-21
Granted: 1989-12-04
Abstract: The circuit receives the video-signals from a CRT controller to drive a EL display, thereby enhancing the compatibility.  The OR-gate (OR1) converts the R.G.B signals into the serial signals for the EL monitor.  The first blanking circuit (BG1) and the second blanking circuit (BG2) receiving the Vsync, Hsync signal, produce the vertical and horizontal blanking signals respectively via voltage-level controllers (VL1,VL2).  A voltage-controlled oscillator (VCO) which is controlled by a phase detector (PD) comparing the Hsync and the output signal of the DV produces the sync signals for video data transmission.
Patent KR-940005317-B1 (KR)
Title: Separation device for plates
Inventor: STORK MARTIN
IPC: B26D5/28
Filed: 1986-10-25
Granted: 1994-06-16
Abstract: A continuous strip which is laminated onto plates arranged at a distance from one another and which is composed of a dry resist laminate is introduced into a separating device 1 extending over the width of a strip 20. A drive cylinder 2 is arranged by means of pillars 3 above a carriage 31. The drive cylinder 2 guides the mounting 11, in which a cross-cutting device 10 is fastened, transversely over the strip 20. The cross-cutting device 10 comprises two knife-holders with knives parallel to one another, which are movable apart from one another and together and which, during the transverse movement, sever the strip 20 in a double cut along the trailing edge 29 and the leading edge 30 of two adjacent plates 4 and 5.
Patent KR-910006420-B1 (KR)
Title: Calcium-phosphate type hydroxy apatite for chromatographic separation and process for producing same
Inventor: DAKAYA NOBUAKI
IPC: B01J20/04
Filed: 1986-12-12
Granted: 1991-08-24
Abstract: The calcium-phosphate type hydroxyapatite is in the form of spherulites having a mean particle diameter of 0.5 to 50 um and preferably 1 to 10  mu m. The spherulites are aggregates mainly of acicular crystallites belonging to a series of hexagonal systems and having unit lattice constants of 9.58 +/- 0.08  ANGSTROM  (0.958+/-0.008 nm) for the a axis and 7.00 +/- 0.05  ANGSTROM (0.700+/-0.005 nm) for the c axis. The spherulitic hydroxyapatite is produced by granulating a calcium-phosphate type hydroxyapatite in the form of a gel and then firing the granular apatite at 400 to 700 DEG C, preferably at 500 to 600 DEG C and desirably in the presence of oxygen or air.
Patent KR-940009794-B1 (KR)
Title: Process for preparing cephalosporin dervatives
Inventor: NAKAGAWA SUSUMU
IPC: A61P31/04
Filed: 1987-03-20
Granted: 1994-10-17
Abstract: Cephalosporins of formula (I) and their salts, esters and solvates are new: R = opt. substd. vinyl, phenyl or aralkyl. Specifically claimed are 7 cpds. (I), including 7-(2-(2-amino-4-thiazolyl) -2-(1-carboxy-1-vinyloxyimino acetamido)-3-(1-carboxy-methyl pyridinium-4-ylthiomethyl) cephem-4-carboxylate (Ia).
Patent KR-950015137-B1 (KR)
Inventor: KAWAGISHI SETSUO
IPC: B29B17/02
Filed: 1987-03-30
Granted: 1995-12-22
Abstract: 내용 없음.
Patent KR-890003698-B1 (KR)
Title: Process for making sikhei(sweet rice beverage)
Inventor: BAEK UN-HWA
IPC: A23L2/38
Filed: 1987-09-01
Granted: 1989-09-30
Abstract: A sweet drink was prepared from fermented rice.  Thus, 360g crushed malt in a heat sealable paper sack was soaked into 4 liter water for 2 hrs, mixed with 200g rice, saccarified for 4 hrs in an electric rice cooker, and then boiled to give a final product.
Patent KR-900002815-B1 (KR)
Title: Regenerating method of filter bed
Inventor: YOM BYUNG-HO
IPC: B01D24/46
Filed: 1987-11-13
Granted: 1990-05-01
Abstract: A regeneration process of a filter bed (1) comprises a filtering process, a washing preparation and stand-by process, a washing process, and a filtering process.  The back washing drainage separation process for the filter bed is characterised in that an unfiltered drainage valve positioned between a back washing drainage way (7) and a back washing drainage tube (9a) is opened during the washing stand-by process so that unfiltered water put in the upper part of trap (3) is separated and regenerated by a unfiltered water drainage tube (9b) located at one side of the back washing drainage tube.
Patent KR-900005204-B1 (KR)
Title: Flame-retardant polyamide resin composition
Inventor: PARK HEUNG-SHIK
IPC: C08K5/34
Filed: 1987-12-26
Granted: 1990-07-21
Abstract: 100 pts. wt. of polyamide resin; 5-15 pts. wt. of melamine phenyl phosphinate, as flame retardant material; and 5-30 pts. wt. of phosphagen cpd. of formula (I) w.r.t. 100 pts. wt. of the melamine phenyl phosphinate. In formula, R1, R2 = H, C1-5 alkyl or alkoxy, amino or cyan gp. Pref. the polyamide resin is nylon 6, nylon 66, nylon 11, nylon 12, nylon 610, nylon 612 or nylon 66/6 copolymer.
Patent KR-900008101-B1 (KR)
Title: Flip-flop using tri-state inverter
Inventor: CHANG GYE-ON
IPC: G11C11/40
Filed: 1987-12-31
Granted: 1990-10-31
Abstract: The flip-flop for preventing error caused by the clock-skew comprises a master stage (10), and a slave stage (20). The master stage comprises tri-state inverters (I10-30) and the slave stage comprises tri-state inverters (I40-60). The output (X) of the tristate inverter (I10) in the master stage is connected to the input of the tri-state inverter (I40) in the slave stage so that the output of the tri-state inverter (I40) provids the positive output (Q) and the tri-state inverter (I60) provides the negative output (Q bar).
Patent KR-950001417-B1 (KR)
Inventor: MEATH CHESTER A
IPC: G06F9/46
Filed: 1988-02-24
Granted: 1995-02-24
Abstract: 내용없음.
Patent KR-970003201-B1 (KR)
Inventor: SMITH JAMES G
IPC: G02B6/36
Filed: 1988-05-05
Granted: 1997-03-15
Abstract: 내용없음.
Patent KR-910006373-B1 (KR)
Title: Noise removing level control circuit
Inventor: CHOI HAE-YONG
IPC: H04N5/208
Filed: 1988-06-11
Granted: 1991-08-21
Abstract: The circuit for automatically lcontrolling a noise  reduction level to eliminate a noise signal includes an  amplifier  (5)  for amplifyign a contour signal, a contour signal mean value  detector (10), a noise reduction level controller (15) for varying the mean value voltage detected by the detector (10)  to  control  a  noise reduction level, positive and negative  noise  reduction  circuits (20)(25), and an output level controller (30) for controlling  and outputting the level of the contour  signal  in  which  the  noise signal is eliminated.
Patent KR-910008333-B1 (KR)
Inventor: GANT GARY R
IPC: C08G59/40
Filed: 1988-08-09
Granted: 1991-10-12
Abstract: 내용 없음.
Patent KR-0124145-B1 (KR)
Inventor: CASPERS JOHANNES
IPC: G11B33/04
Filed: 1988-08-26
Granted: 1997-11-28
Abstract: 내용없음.
Patent KR-920009799-B1 (KR)
Inventor: TSUJIDANI SHIGEKI
IPC: G01P3/36
Filed: 1988-08-30
Granted: 1992-10-22
Abstract: 내용 없음.
Patent KR-960009263-B1 (KR)
Title: Process of producing sulfonylurea derivatives
Inventor: MIKI HIDEKI
IPC: A01N47/36
Filed: 1988-08-31
Granted: 1996-07-16
Abstract: This invention relates to a process for producing a compound of the formula (I) as shown below. <CHEM> wherein Q is a condensed heterocyclic group having a nitrogen atom in the bridgehead position which may optionally be substituted, R1 and R2 each are an alkyl group, an alkoxy group or halogen and Z is CH or N, or a salt thereof. The compound (I) or a salt thereof is novel and of value as agricultural chemicals. According to the process of this invention the compound (I) or a salt thereof can be produced in good yield and high purity.
Patent KR-910004454-B1 (KR)
Title: Spinnerette pack for hollow fibers
Inventor: KIM DEOK-HWAN
IPC: D01D5/24
Filed: 1988-11-01
Granted: 1991-06-29
Abstract: Number of arc-shaped slits which constitute the spinneret  is 3. The length/ diameter (L/D) of slit is 2,6 and the width of slit is below 0.1mm. Also the spaced between the slits is set in a  way that satisfies the following condition  [0.2×(L/D)-1 + C1/2 ÷100<= d(mm) <= [0.3 (L/D)-1+ C1/2 ÷100, where C; concentration of polymer (wt.%) in the case of solution  spinning, 100% in case of melt spinning. L; length of slit, D; diameter  of slit, a; width of slit. The spinneret is used in  the  mfr. of a hollow fiber by polt mer melt or -solution melthod.
Patent KR-910005179-B1 (KR)
Inventor: SADAKE HIDEO
IPC: B01F15/04
Filed: 1988-11-05
Granted: 1991-07-23
Abstract: 내용 없음.
Patent KR-920003296-B1 (KR)
Inventor: SATO HIROSHI
IPC: H04W52/02
Filed: 1988-11-30
Granted: 1992-04-27
Abstract: 내용 없음.
Patent KR-970009223-B1 (KR)
Inventor: SLUSARCHYK WILLIAM ALLEN
IPC: A61P31/22
Filed: 1989-03-29
Granted: 1997-06-09
Abstract: 내용 없음.
Patent KR-930001926-B1 (KR)
Inventor: MAEDA MIYUKI
IPC: G06Q10/10
Filed: 1989-04-13
Granted: 1993-03-20
Abstract: 내용 없음.
Patent KR-920001409-B1 (KR)
Title: Telephone automatic calling connection system
Inventor: PARK KAP-JE
IPC: H04M1/00
Filed: 1989-04-18
Granted: 1992-02-13
Abstract: The apparatus includes a photo coupler (PT)  driven  by  tone signal of a receiver, a first counter (1) for counting the  signal received by the phtocoupler (PT), an inverter  (2)  for  inverting the counted value, a  ring  signal  detector  (20)  for  detecting received audible signal, a loop receiver (30)  for  receiving  the audible signal detected by the ring signal detector,  an  internal loop receiver (40) for sending a signal tone to  the  sender  when the audible signal is received, a busy signal  detector  (50)  for detecting the busy state, an announcement  (70)  for  sending  the busy signal to a receiver through a relay recovery unit (60),  and a tone generator (80)  for  sending  the  audible  signal  of  the receiver to the sender.
Patent KR-920001531-B1 (KR)
Title: Device for measuring inner pressure of thermoplastic tube
Inventor: GWON YEONG-IL
IPC: G01N3/08
Filed: 1989-10-26
Granted: 1992-02-18
Abstract: The   internal   pressure   measuring   apparatus   inflicts displacement by use of a  precise  feeding  mechanism  such  as  a micrometer, and measures the amount of resistance  generated  from the inflicted displacement. The apparatus comprises a  frame  (13) built on a base plate (10), upper/lower supports (11,12) protruded on one side of the frame, a push plate (14) adhering to the  lower face of the support (11), and an indicator (20)  equipped  in  the support (12). The indicator uses a micrometer  head.  And  in  the lower support (12), a load cell (30) is  assembled  on  the  plate (22) of a screw member (21).  The  apparatus  provides  a  precise measurement at wanted positions of the resin tube.