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1. 发明专利

JPH1080743A MOLD MATERIAL FOR DENTAL HIGH TEMPERATURE ACTIVE METAL AND CASTING METHOD FOR THE METAL 失效
公开(公告)号：JPH1080743A
公开(公告)日：1998-03-31
申请号：JP22175897
申请日：1997-08-18
申请人： MORITA MFG
发明人： OGINO HIROYA , NISHIMURA MIKINORI , TANAKA TOKUYUKI
IPC分类号： A61C13/20 , A61K6/00 , B22C1/00 , B22C1/08 , B22C1/18 , B22D23/00
摘要： PROBLEM TO BE SOLVED: To provide a mold material for a dental high temp. active metal which lowers firing temp. of the mold, compensates casting shrinkage of a casting material and improves the adaptability precision, and a casting method of the high temp. active metal for dentistry. SOLUTION: In the mold material for casting containing aggregate blending auxiliary aggregate into main aggregate composed of alumina and magnesia, binder and additive, the additive is composed of at least one kind selected among group of lithium fluoride, aluminum fluoride, barium fluoride, sodium chloride, calcium chloride, lithium chloride, lithium bromide, boron oxide and calcium borate, and the firing temp. of the molding material is lowered to

2. 发明专利

JPH0320292B2 失效
公开(公告)号：JPH0320292B2
公开(公告)日：1991-03-19
申请号：JP17647886
申请日：1986-07-26
申请人： MORITA MFG
发明人： OGINO HIROYA
IPC分类号： B22C1/08 , B22D27/02

3. 发明专利

JPH11244303A DEVICE FOR CLEANING AND POLISHING SURFACE OF TOOTH AND ABRASIVE FOR THE SAME 失效
公开(公告)号：JPH11244303A
公开(公告)日：1999-09-14
申请号：JP4954098
申请日：1998-03-02
申请人： MORITA MFG
发明人： OGINO HIROYA , NISHIMURA MIKINORI
IPC分类号： A61C3/025 , A61C17/02 , A61K8/00 , A61K8/20 , A61K8/25 , A61K8/26 , A61K8/34 , A61K8/44 , A61K8/97 , A61Q11/00 , A61K7/16
摘要： PROBLEM TO BE SOLVED: To prevent generation of dental carries by jetting an abrasive and a sugar alcohol together with a fluid from a nozzle of a hand piece to a surface of a tooth to clean and polish. SOLUTION: When a switch 5 of a device 1 and an operation switch 3b of a hand piece 3 are turned on, a pulsating jet stream, for example having pulsation about 1,800 times per minute, is jetted from a nozzle 3a. At this time, stream pressure is changed by about 0.7 kg/cm at maximum by a stream pressure control swtich 6. An abrasive for a device for cleaning and polishing a surface of a tooth, which is formed from the abrasive such as sodium bicarbonate, and a sugar alcohol such as maltiol, is dissolved in water or a solution of salt to be filled into a solution tank 2. The abrasive such as sodium bicarbonate is preferable in the point that it does not remain to prevent giving uncomfortable feeling. The surface of the tooth can be cleaned and polished by the abrasive so that dental carries can be prevented by suppressive efficiency for mutanse streptococcus metabolism function.

4. 发明专利

JPH0532516A STERILIZABLE CURING COMPOSITION FOR DENTAL USE 失效
公开(公告)号：JPH0532516A
公开(公告)日：1993-02-09
申请号：JP21435791
申请日：1991-07-30
申请人： MORITA MFG
发明人： ITO MITSUO , FUJIMURA YOSHISABURO , OGINO HIROYA
IPC分类号： A61K6/02 , A61K6/04 , A61K6/10
摘要： PURPOSE:To obtain a sterilizable curing composition for dental use, having high durability and safety without using a germicide, being utilized a photoelectrochemical germicidal action of titania by mixing titania fine powder on which a metal such as platinum or titanium is carried. CONSTITUTION:A sterilizable curing composition for dental use obtained by mixing titania fine powder (rutile type or anatase type, preferably having 5mum particle diameter) carrying thereon a metal (pref. platinum, palladium or titanium and a base metal such as silver or nickel, where nickel is used for seal material or gypsum model). When a cured body of the composition containing the metal-carried titania fine powder exposed on the surface of tooth is illuminated with proper visible light, it is effective for prevention of caries and periodontal disease or prevention of malodor, because the cured body and the peripheral tooth part are sterilized. When the cured body contained in the inside of tooth is illuminated with visible light capable of permeating tooth, sterilization effect is given and is effective for prevention of diseases inside and deep part of the gum.

5. 发明专利

JPS6368239A MOLDING MATERIAL 失效
公开(公告)号：JPS6368239A
公开(公告)日：1988-03-28
申请号：JP21345986
申请日：1986-09-09
申请人： MORITA MFG
发明人： OGINO HIROYA , TAMURA MASAMI , TOYONE TOORU , INOUE SHIGEHIKO
IPC分类号： B22C1/00 , B22C1/08
摘要： PURPOSE:To obtain an inexpensive molding material which permits casting of a high-quality casting by using Al2O3 and MgO as aggregate, incorporating fine powder of Ti therein and exactly compensating the shrinkage on solidification of the molding material such as Ti at the time of casting. CONSTITUTION:This molding material is formed by using Al2O3 and MgO as the aggregate and incorporating the fine powder of Ti therein and is adequate for casting of metals such as Ti, Ni, Co and Cr having a relatively high m.p., glass, ceramics, etc. The content ratios of these raw materials are adequately specified to about 2-70pts.wt. Al2O3, about 10-97pts.wt. MgO, and about 1-20pts.wt. fine powder of Ti.

6. 发明专利

JPH06577A INVESTMENT MATERIAL FOR SHRINKAGE COMPENSATABLE CASTING MOLD 失效
公开(公告)号：JPH06577A
公开(公告)日：1994-01-11
申请号：JP18060092
申请日：1992-06-16
申请人： MORITA MFG
发明人： OGINO HIROYA , NISHIMURA MIKINORI , TANAKA TOKUYUKI
IPC分类号： B22C1/00 , C04B35/46
摘要： PURPOSE:To produce the casting mold which compensates the shrinkage of the molten metal of a bath on casting under easy temp. control and to obtain a casting having good adaptability by using the investment material for casting contg. an expansion material of an Li2-Ti2O compd. CONSTITUTION:The Li2-Ti2O compd. is sufficiently lower in the expansion development temp. than the calcination temp. in the production of the casting mold and, therefore, expands surely without receiving the influence of the variation in the calcination temp. in spite of such variation. The investment material for casting is constituted by using the Li2-Ti2O compd. (for example, Li2Ti3O7) as the expansion material together with aggregate, such as alumina, magnesia, and a binder, such as alumina cement and magnesia cement, at the time of producing the casting mold for castings, such as metallic materials and ceramic materials. As a result, the casting mold having the excellent shrinkage compensatability is produced.

7. 发明专利

JPH01181958A MOLD FOR DIFFERENTIAL PRESSURE CASTING AND METHOD FOR MOLDING THEREOF 失效
公开(公告)号：JPH01181958A
公开(公告)日：1989-07-19
申请号：JP629488
申请日：1988-01-14
申请人： MORITA MFG
发明人： OGINO HIROYA , NISHIMURA MIKINORI
IPC分类号： B22D23/00 , B22C9/02
摘要： PURPOSE:To restrain the development of casting blow hole and to produce high quality casting by making permeability of a molding material at least in the neighborhood of cavity larger than that at the other part. CONSTITUTION:The mold 4 having a sprue 41, runner 42 and casting cavity 43 under mutually communicating condition is set in a casting chamber for differential pressure casting apparatus. Then, the casting material 13 melted with the are generating device is poured into the sprue 41 in the mold 4 from a crucible and immediately, by operating an inert gas supplying means and sucking means, the difference between inner pressures of a melting chamber and the casting chamber is formed. By this different pressure, the molten casting material in the sprue 41 is flowed into the casting cavity 43 through the runner 42, to serve as a feeder. Then, as the permeability C1 at least in the neighborhood of the casting cavity 43 is made to large than the permeability C2 at the other part, the pressure Pa in the casting cavity 43 is rapidly balanced almost with the inner pressure in the casting chamber and the pressure Pb becomes smaller than the pressure Pa near the sprue 41 and the difference P1 of both pressure is equalized to setting inner pressure difference between the melting chamber and the casting chamber. Therefore, the molten material 13 is quickly cast into the casting cavity 43 and the casting having closely high quality without casting blow hole is obtd.

8. 发明专利

JPS62176664A CASTING METHOD FOR PURE TITANIUM OR ALLOY ESSENTIALLY CONSISTING OF TITANIUM 失效
公开(公告)号：JPS62176664A
公开(公告)日：1987-08-03
申请号：JP1700986
申请日：1986-01-28
申请人： MORITA MFG
发明人： OGINO HIROYA , TSURUTA YOSHIAKI
IPC分类号： B22D21/02
摘要： PURPOSE:To permit high-temp. casting and compensation of the shrinkage of a titanium material on solidification by specifying the constitution of a magnesia compsn. to be used as a molding material. CONSTITUTION:A casting material contg. >=1 kinds among magnesia by an electric melting method, eutectic alloy of the magnesia by said method and calcia, powder metallic titanium, zirconium oxide and powder metallic zirconium and binder contg. zirconia cement is calcined to form a casting mold 9. The free energy change of the reaction of the casting mold 9 and the titanium or an alloy essentially consisting of the titanium is held at >=0 activity in a temp. range higher than the melting temp. of the alloy 3. The device body is held in a vacuum state and the inert gas is filled in a melting chamber 38 to make the internal pressure of the chamber 38 larger than the internal pressure of the casting chamber. The alloy is melted by an arc generator A and the molten alloy is dropped through a pouring port 8 of a guide bushing 7 into the casting mold 9 by inclining a crucible 5. The molten metal is pressed and cast by the difference in the internal pressures between the two chambers 38, 39.

9. 发明专利

JPH0654866A ARC MELTING AND CASTING DEVICE 失效
公开(公告)号：JPH0654866A
公开(公告)日：1994-03-01
申请号：JP23522992
申请日：1992-08-10
申请人： MORITA MFG
发明人： OGINO HIROYA , NISHIMURA MIKINORI , TANAKA TOKUYUKI
IPC分类号： A61C13/20 , B22D13/00 , B22D18/06 , B22D23/00
摘要： PURPOSE:To improve the run performance of the arc melting and casting device which pours the metal melted by arc heating in a crucible into a casting mold by tilting the crucible by providing a molten metal leading member which has a good thermal conductivity and has a hollow part possessing a specific inside diameter in communication with the casting port of the casting mold. CONSTITUTION:The arc melting and casting device for precision casting of dental metals and alloys has a melting chamber 11 disposed with the tilting crucible 4 consisting of a copper block and a casting chamber 12 which is partitioned from the melting chamber 11 by a partition wall 13 and is fixed with the casting mold 6 having a casting mold space 62 molded with a dental plate by an alumina casting mold type packing material. The molten metal introducing member 5 is freely attachably and detachably fitted into the partition wall 13. The molten metal introducing member 5 is made of copper and is formed with a hollow part 51 by providing a straight through-hole. The min. inside diameter d of the hollow part 51 is specified to a 50 to 100% range of the outside diameter of a circular cylindrical ingot 3. As a result, the molten metal is cooled by coming into contact with the inside wall of the hollow part 51 at the time of pouring the molten metal into the casting mold 6 by tilting the crucible 4, by which a defectless casting is produced.

10. 发明专利

JPH0428455B2 失效
公开(公告)号：JPH0428455B2
公开(公告)日：1992-05-14
申请号：JP18836187
申请日：1987-07-27
申请人： MORITA MFG
发明人： OGINO HIROYA , NISHIMURA MIKINORI
IPC分类号： B22C9/04 , A61K6/06 , B22C1/00 , B22C1/08 , B22C3/00

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