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1. 发明专利

JP2000291610A BENT PIPE 失效
公开(公告)号：JP2000291610A
公开(公告)日：2000-10-20
申请号：JP9649599
申请日：1999-04-02
申请人： MARUGO RUBBER IND CO LTD
发明人： YOKOTA MOTOYUKI , KONTO HIDEYUKI
IPC分类号： F16L43/00 , F15D1/04 , F15D1/06
摘要： PROBLEM TO BE SOLVED: To suppress pressure loss by providing a protruding bar in a bent part of a bent pipe. SOLUTION: A protruding bar extending in the peripheral direction is formed on an inner peripheral side of a bent part in a bent pipe through which fluid passes. Pressure loss can be suppressed by providing such protruding bar. In this case, it is effective if relative height of the protruding bar is 15% or less, the protruding bar extends about 1/4 to 1/2 turn in the direction of circulation, and the protruding bar is formed in front of a bent part in the direction of circulation. Since bent parts are formed in a branch section and a confluent section at a branch point and in a confluent pipe, satisfactory effect can be expected as a matter of course, even if the protruding bar is applied to these pipes. Moreover, satisfactory effect can be expected even in the case of a straight pipe. Furthermore, fluid passing through these pipes is not limited to gas.

2. 发明专利

JP2002106430A INTAKE PIPE 失效
公开(公告)号：JP2002106430A
公开(公告)日：2002-04-10
申请号：JP2000295616
申请日：2000-09-28
申请人： MARUGO RUBBER IND CO LTD
发明人： YOKOTA MOTOYUKI , KONTO HIDEYUKI
IPC分类号： F02M35/10 , F02M35/12 , F15D1/02 , F15D1/06
摘要： PROBLEM TO BE SOLVED: To provide an excellent intake pipe by contriving ways to reduce the pressure loss of an air flow even when the intake pipe has a diffuser shape with a noise suppression effect. SOLUTION: The intake pipe, having a diffuser part which starts from a starting point and whose diameter becomes larger gradually toward downstream, is provided with a front section continuing to an intake port toward the upstream side relative to the starting point, and also provided with a protrusion in a peripheral direction on the inner periphery of the front section.

3. 发明专利

JP2002113319A FILTER FRAME OF AIR CLEANER 失效
公开(公告)号：JP2002113319A
公开(公告)日：2002-04-16
申请号：JP2000310521
申请日：2000-10-11
申请人： MARUGO RUBBER IND CO LTD , BICCHU SHOJI KK
发明人： YOKOTA MOTOYUKI , KONTO HIDEYUKI , ARAI TAKANOBU , DEGUCHI KAZUO , MIYAKE TAKASHI , TSUJI KOJI
IPC分类号： F24F13/02 , B01D46/10
摘要： PROBLEM TO BE SOLVED: To provide a filter frame having small number of parts, corresponding to a thick filter and having an excellent filter supporting property. SOLUTION: In the filter frame for supporting a filter for inserting into an air duct of an air cleaning device, the filter frame is formed by making two cup bodies 4 having a wall 3 standing from a meshlike bottom surface 2 oppose each other and holding the filter between the cup bodies 4.

4. 发明专利

JP2000246791A INSERT MADE OF SYNTHETIC RESIN 失效
公开(公告)号：JP2000246791A
公开(公告)日：2000-09-12
申请号：JP5072099
申请日：1999-02-26
申请人： MARUGO RUBBER IND CO LTD
发明人： YOKOTA MOTOYUKI , HAYASHIBARA TAKASHI , KONTO HIDEYUKI
IPC分类号： B29C49/20
摘要： PROBLEM TO BE SOLVED: To provide an insert to integrally form an attaching member of a pipe for a branched channel constitution, on ducts which are hollow blow-molded articles by simultaneously performing an insert-molding at the time of a blow- molding to obtain the hollow blow molded body, and wherein not only the attaching property and the airtightness between the insert and the pipe for the branched channel constitution, but also, the fixing strength and the pulling- out strength after an assembly between the insert and the hollow blow molded body are improved. SOLUTION: The internal layer section 2a of a short tubular section 2 of this insert 1 is constituted of a flexible synthetic resin, and the external layer section 2b of the short tubular section 2, and a bottom section 3 which is integrally connected to the external layer 2b are constituted of a hard synthetic resin respectively. At a plurality of locations on the external layer section 2b of the short tubular section 2, a vertical slit 4 is provided, and the insert 1 is made easy to extend/shrink by the external force which is applied to the short tubular section 2.

5. 发明专利

JP2001207923A INTAKE AIR INTAKE STRUCTURE OF AIR INTAKE PIPE IN INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JP2001207923A
公开(公告)日：2001-08-03
申请号：JP2000011807
申请日：2000-01-20
申请人： MARUGO RUBBER IND CO LTD
发明人： HAYASHIBARA TAKASHI , KONTO HIDEYUKI , OKADA SEIJI
IPC分类号： F02M35/10
摘要： PROBLEM TO BE SOLVED: To provide an intake air intake structure of an air intake pipe in an internal combustion engine taking the safety measure for water and noise. SOLUTION: This intake air intake structure constitutes a characteristic feature of covering an upper part of an air intake pipe main body on the periphery of an air intake port to open on an upper end with a cover to cover outside of all the periphery of a collar down to below the collar and making a clearance between the air intake pipe main body and the cover an air intake route of intake air to take in from the air intake port.

6. 发明专利

JP2002021657A INTAKE DUCT FOR INTERNAL COMBUSTION ENGINE AND ITS MANUFACTURING METHOD 失效
公开(公告)号：JP2002021657A
公开(公告)日：2002-01-23
申请号：JP2000204616
申请日：2000-07-06
申请人： MARUGO RUBBER IND CO LTD
发明人： HAYASHIBARA TAKASHI , KONTO HIDEYUKI
IPC分类号： F02M35/10 , F02M35/024 , F02M35/14
摘要： PROBLEM TO BE SOLVED: To reduce the space and the cost of an intake duct for an internal combustion engine and to improve the intake efficiency thereof. SOLUTION: This intake duct 1 for the internal combustion engine is connected to the intake side of an air cleaner inserted into the intake system of the internal combustion engine. In this case, the intake duct is characterized by forming a window part 9 having windows 8 partitioned by leaving partitioning parts 7 throughout appropriate places of the circumference of a base pipe part 3 constituting the intake duct and by mounting a permeable material 11 to the window part.

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