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41. 发明专利

JPH09280373A PISTON RING 失效
公开(公告)号：JPH09280373A
公开(公告)日：1997-10-28
申请号：JP9516396
申请日：1996-04-17
申请人： TOYOTA MOTOR CORP , TEIKOKU PISTON RING CO LTD
发明人： KUMAI TERUO , ISHIDA MASAO
IPC分类号： F02F5/00 , F16J9/06 , F16J9/28
摘要： PROBLEM TO BE SOLVED: To ensure excellent sealing ability along a ring groove by a method wherein an elastic ring making contact with the upper and under surfaces of the ring groove is located between an annular spring member and a piston ring and slopes serving as a contact surface with an annular ring member are formed on the upper and under surfaces of the ring groove. SOLUTION: A piston ring 1 is inserted in a ring groove 3 and an annular coil expander 5 to press the piston ring 1 externally is provided. Further, an elastic ring 6 is located between the piston ring 1 and the coil expander 5. Upper and lower slopes 6a and 6b positioned facing each other are formed as a contact surface with the coil expander 5 are formed at the elastic ring 6. Thus, in press in an external direction of the piston ring 1 by the coil expander 5, the elastic ring 6 is pressed not only in an external direction R but also in a vertical direction A, and vertically deformed and forced into adhesion on the upper and under surfaces of the ring groove 3 to ensure sealing ability.

42. 发明专利

JPH08303590A SEAL CONSTRUCTION 失效
公开(公告)号：JPH08303590A
公开(公告)日：1996-11-19
申请号：JP13113295
申请日：1995-05-01
申请人： TEIKOKU PISTON RING CO LTD , TOYOTA MOTOR CORP
发明人： ISHIDA MASAO , KUMAI TERUO , MURAKAMI GENICHI
IPC分类号： F02F5/00 , F16J9/06 , F16J9/16 , F16J9/28
摘要： PURPOSE: To provide a seal construction by a combined ring of which leakage can be reduced and durability is excellent. CONSTITUTION: A combined ring is constituted of a metallic ring 1 and a synthetic resin ring 6. The metallic ring 1 is a ring of L-shaped section having a cutout part 3 on the upper part side of the outer circumferential face 2 forming a sliding surface and provided with an abutment. The synthetic resin ring 6 is a ring of rectangular section having an abutment, arranged on the cutout part 3 of the metallic ring 1, and the outer circumferential face 7 is served as a sliding surface. The abutment is set in the condition in which the end faces of the abutment are run into each other in the service condition. The combined ring is mounted in the ring groove 42 of a piston 40, and inserted into the bore 44 of a cylinder 43. Under the condition, it is constituted so that the ratio of the contact face pressure of the metallic ring 1 against the bore inner circumferential face 45 to the contact face pressure of the synthetic resin ring 6 against the bore inner circumferential face 45 is in the range of 1:1-30:1. The synthetic resin ring 6 can be changed to a synthetic rubber ring.

43. 发明专利

JPH09317885A COMBINATION OIL RING DETENTE STRUCTURE 失效
公开(公告)号：JPH09317885A
公开(公告)日：1997-12-12
申请号：JP15501396
申请日：1996-05-27
申请人： TEIKOKU PISTON RING CO LTD , TOYOTA MOTOR CORP
发明人： ISHIDA MASAO , NARUSE YOSHIO , INOUE TAKASHI
IPC分类号： F02F5/00 , F16J9/00 , F16J9/06 , F16J9/24
摘要： PROBLEM TO BE SOLVED: To improve the mountability of an oil ring to a piston and the sealing between its upper and lower faces and the side walls of a ring groove, and keep its detent function even if a detent member is dislocated. SOLUTION: A combination oil ring 10 comprises a sectionally substantial I-shaped oil ring 11 constituted by a pair of rails 13 and 14 coupled together by a column 15, and a coil expander 12. The oil ring 11 is formed at its lower face 11a with a recessed part 30 which is open to its outer periphery and to which a detent member 31 is fixed to be inserted into a recessed part 32 formed in a lower plane 4a of an oil ring groove 4. The detent member receiving recessed part 32 is formed in an outer periphery 3 of a piston 1, and radially extends to the substantial same position as the radially inner end of the detent member fixing recessed part 30. The detent member fixing recessed part 30 may be of a hole shape or may be formed in the inner or outer periphery of the oil ring 11.

44. 发明专利

JPH09159024A PISTON RING STRUCTURE 失效
公开(公告)号：JPH09159024A
公开(公告)日：1997-06-17
申请号：JP31685095
申请日：1995-12-05
申请人： TOYOTA MOTOR CORP , TEIKOKU PISTON RING CO LTD
发明人： KUMAI TERUO , ISHIDA MASAO
IPC分类号： F02F5/00 , F16J9/06 , F16J9/28
摘要： PROBLEM TO BE SOLVED: To prevent the worsening of a seal performance in the case of long term use, in a piston ring structure used by the contact of at least one ring shape spring to first/second slant surfaces, in which a first piston ring having a first slant surface on its inner periphery part and a second piston ring having a second slant surface on its inner periphery part are inserted in a ring groove by that the first/second slant surfaces are faced each other and piled up. SOLUTION: A first piston ring 1 is made of resin. First/second slant surfaces 1a, 2a are formed so that a push-press force F1r in a piston radius outside direction produced to the first piston ring 1 through a first slant surface 1a by a ring shape spring 6 may become smaller than a push-press force F2r in a piston radius outside direction produced to the second piston ring 2 through a second slant surface 2a by the ring shape spring.

45. 发明专利

GB2257716B Compression ring and method for manufacturing the same 未知
公开(公告)号：GB2257716B
公开(公告)日：1995-01-18
申请号：GB9213654
申请日：1992-06-26
申请人： TEIKOKU PISTON RING CO LTD
发明人： ISHIDA MASAO
IPC分类号： C23C8/38 , C23C8/80 , C23C8/26 , F16J9/00
摘要： A compression ring provided with both ends having notches is formed on outer peripheral surface with a plasma nitrided layer and is formed on upper and lower surfaces and an inner peripheral surface with soft surface treatment layers. The upper and lower surfaces and the inner peripheral surface may be of base material surfaces.

46. 发明专利

DE69120634D1 未知
公开(公告)号：DE69120634D1
公开(公告)日：1996-08-08
申请号：DE69120634
申请日：1991-11-15
申请人： TEIKOKU PISTON RING CO LTD
发明人： MIYAZAKI SATOMICHI , HARAYAMA AKIRA , KAZAMA NOBUYUKI , ISHIDA MASAO
IPC分类号： F16J9/06 , F16J9/26 , F16J9/00

47. 发明专利

DE60114254T2 未知
公开(公告)号：DE60114254T2
公开(公告)日：2006-06-01
申请号：DE60114254
申请日：2001-01-05
申请人： TEIKOKU PISTON RING CO LTD
发明人： ISHIDA MASAO
IPC分类号： F16J9/20 , F16J9/06
摘要： A combined oil ring is comprised of an oil ring 1 and an expander 2. The cross section of the oil ring 1 is a generally I-shape, and the outer circumferential surfaces of outer rail portions 6 and 7 form sliding surfaces 8 and 9 to make contact with the cylinder wall surface. The cross section of an expander installation groove 13 formed on the inner circumferential surface of the oil ring 1 is formed in a rectangular shape, and an expander 2 formed of axially corrugated ring-shaped plate material is mounted in the expander installation groove 13. The expander 2 is formed by forming a rectangular cross sectional plate material in a corrugated shape in the direction of plate thickness and further forming in a ring shape. The expander installation groove 13 of the oil ring 1 is not limited to a rectangular shaped cross section. For example, the cross section of the expander installation groove 13 may have a trapezoidal shape widening towards the inner circumference, and the cross section of the plate material forming the expander 2 may have a generally diamond-shaped cross section.

48. 发明专利

DE19615719C2 未知
公开(公告)号：DE19615719C2
公开(公告)日：1998-12-17
申请号：DE19615719
申请日：1996-04-20
申请人： TEIKOKU PISTON RING CO LTD
发明人： ISHIDA MASAO , NARUSE YOSHIO
IPC分类号： F16J9/06 , F16J9/14 , F16J9/20 , F16J9/24 , F02F5/00
摘要： A combined oil ring comprises an oil ring and a coil expander. A curved bar passes through paired end portions of the coil expander. An antirotation member comprises a portion to be inserted into a hole and a portion to be held. Two mutually parallel surfaces of the portion to be held are held between paired end surfaces of the coil expander while the portion to be inserted into a hole is inserted into an antirotation member securing hole formed at the bottom surface of an oil ring groove of a piston. The curved bar passes through a curved bar insertion hole formed in the portion of the antirotation member to be held.

49. 发明专利

GB2344633B Piston ring 未知
公开(公告)号：GB2344633B
公开(公告)日：2002-10-23
申请号：GB9929046
申请日：1999-12-08
申请人： TEIKOKU PISTON RING CO LTD
发明人： ISHIDA MASAO
IPC分类号： F16J9/20 , F02F5/00 , F16J9/26
摘要： The outer circumferential surface of a second ring is comprised of an outer circumferential surface with a taper face having an outer diameter that increases towards the downward direction, and an outer circumferential surface having the same outer diameter and extending slightly in a perpendicular direction from the lower edge of the taper-faced outer circumferential surface. An annular groove is formed near the outer circumference on a lower surface of the second ring. The annular groove is formed along the entire circumference of the ring and is open at end surfaces of the ring. The annular groove is open to a space between the third land of a piston and the inner circumferential surface of a cylinder.

50. 发明专利

DE69120634T2 未知
公开(公告)号：DE69120634T2
公开(公告)日：1996-10-31
申请号：DE69120634
申请日：1991-11-15
申请人： TEIKOKU PISTON RING CO LTD
发明人： MIYAZAKI SATOMICHI , HARAYAMA AKIRA , KAZAMA NOBUYUKI , ISHIDA MASAO
IPC分类号： F16J9/06 , F16J9/26 , F16J9/00

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