Patents by Inventor Hideyuki Furuyama
Hideyuki Furuyama has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8714561Abstract: To improve durability of a seal lip (4) of an oil seal (1) in slidably contact with the peripheral surface of a shaft (23), a lubricating oil supply section (11) for collecting adhered oil and dropping it on the shaft (23) is provided at a forward end portion of an installation section (2), the lubricating oil supply section (11) has projections (12) formed on the inner peripheral surface of the installation section (2) to collect oil on the surface thereof, the surface of each projection (12) has a recess (13) for temporarily accumulating oil, guidance projections, or a slope for collecting the oil, and dams are formed on a forward end face (2a) of the installation section (2) to block the oil flowing down along the circumferential direction on the forward end face (2a) and guides the oil toward each projection (12).Type: GrantFiled: October 31, 2011Date of Patent: May 6, 2014Assignee: Nok CorporationInventors: Satoshi Yamanaka, Takehiro Nakagawa, Masayuki Tanida, Hideharu Hyakutake, Hiroki Matsui, Hideyuki Furuyama, Go Kanzaki, Shinya Takeda, Kei Sasaki, Akira Yamaguchi
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Patent number: 8413995Abstract: For an oil seal (1) having a seal lip (6) with a slope (7) at the side of sealed fluid and a slope (8) at the side opposite to the sealed fluid, and a screw section (9) provided on the slope (8) for pushing back sealed fluid by a pumping effect at a time of rotation, in order to achieve low torque characteristics based on fluid lubrication by increasing the thickness of an oil film on sliding surfaces, an intermediate surface (10) is provided between the slopes (7, 8), and an oppositely threaded screw section (11) for sucking the sealed fluid by a pumping effect is provided on the intermediate surface (10) without reaching the boundary (13) between the intermediate surface (10) and the slope (8), so that a threadless region is provided in the entire circumference between the screw section (11) and the boundary (13).Type: GrantFiled: February 22, 2008Date of Patent: April 9, 2013Assignee: NOK CorporationInventors: Hiroki Matsui, Masayuki Tanida, Hirotaka Mizuta, Hideyuki Furuyama, Ken Yoshikawa, Yuki Sato
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Patent number: 8220803Abstract: To improve durability of a seal lip (4) of an oil seal (1) in slidably contact with the peripheral surface of a shaft (23), a lubricating oil supply section (11) for collecting adhered oil and dropping it on the shaft (23) is provided at a forward end portion of an installation section (2), the lubricating oil supply section (11) has projections (12) formed on the inner peripheral surface of the installation section (2) to collect oil on the surface thereof, the surface of each projection (12) has a recess (13) for temporarily accumulating oil, guidance projections, or a slope for collecting the oil, and dams are formed on a forward end face (2a) of the installation section (2) to block the oil flowing down along the circumferential direction on the forward end face (2a) and guides the oil toward each projection (12).Type: GrantFiled: October 31, 2011Date of Patent: July 17, 2012Assignee: NOK CorporationInventors: Satoshi Yamanaka, Takehiro Nakagawa, Masayuki Tanida, Hideharu Hyakutake, Hiroki Matsui, Hideyuki Furuyama, Go Kanzaki, Shinya Takeda, Kei Sasaki, Akira Yamaguchi
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Publication number: 20120086173Abstract: To improve durability of a seal lip (4) of an oil seal (1) in slidably contact with the peripheral surface of a shaft (23), a lubricating oil supply section (11) for collecting adhered oil and dropping it on the shaft (23) is provided at a forward end portion of an installation section (2), the lubricating oil supply section (11) has projections (12) formed on the inner peripheral surface of the installation section (2) to collect oil on the surface thereof, the surface of each projection (12) has a recess (13) for temporarily accumulating oil, guidance projections, or a slope for collecting the oil, and dams are formed on a forward end face (2a) of the installation section (2) to block the oil flowing down along the circumferential direction on the forward end face (2a) and guides the oil toward each projection (12).Type: ApplicationFiled: October 31, 2011Publication date: April 12, 2012Inventors: Satoshi Yamanaka, Takehiro Nakagawa, Masayuki Tanida, Hideharu Hyakutake, Hiroki Matsui, Hideyuki Furuyama, Go Kanzaki, Shinya Takeda, Kei Sasaki, Akira Yamaguchi
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Publication number: 20120080855Abstract: To improve durability of a seal lip (4) of an oil seal (1) in slidably contact with the peripheral surface of a shaft (23), a lubricating oil supply section (11) for collecting adhered oil and dropping it on the shaft (23) is provided at a forward end portion of an installation section (2), the lubricating oil supply section (11) has projections (12) formed on the inner peripheral surface of the installation section (2) to collect oil on the surface thereof, the surface of each projection (12) has a recess (13) for temporarily accumulating oil, guidance projections, or a slope for collecting the oil, and dams are formed on a forward end face (2a) of the installation section (2) to block the oil flowing down along the circumferential direction on the forward end face (2a) and guides the oil toward each projection (12).Type: ApplicationFiled: October 31, 2011Publication date: April 5, 2012Inventors: Satoshi Yamanaka, Takehiro Nakagawa, Masayuki Tanida, Hideharu Hyakutake, Hiroki Matsui, Hideyuki Furuyama, Go Kanzaki, Shinya Takeda, Kei Sasaki, Akira Yamaguchi
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Patent number: 8136818Abstract: A seal lip of an oil seal is in slidable contact with a peripheral surface of a shaft. A lubricating oil supply section for collecting adhered oil and dropping it on the shaft is provided at a forward end portion of an installation section. The lubricating oil supply section has projections formed on the inner peripheral surface of the installation section to collect oil on the surface thereof. The surface of each projection has a recess for temporarily accumulating oil. Guidance projections, or a slope for collecting the oil, and dams are formed on a forward end face of the installation section to block the oil flowing down along the circumferential direction on the forward end face and guides the oil toward each projection.Type: GrantFiled: February 2, 2007Date of Patent: March 20, 2012Assignee: Nok CorporationInventors: Satoshi Yamanaka, Takehiro Nakagawa, Masayuki Tanida, Hideharu Hyakutake, Hiroki Matsui, Hideyuki Furuyama, Go Kanzaki, Shinya Takeda, Kei Sasaki, Akira Yamaguchi
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Publication number: 20100109252Abstract: For an oil seal (1) having a seal lip (6) with a slope (7) at the side of sealed fluid and a slope (8) at the side opposite to the sealed fluid, and a screw section (9) provided on the slope (8) for pushing back sealed fluid by a pumping effect at a time of rotation, in order to achieve low torque characteristics based on fluid lubrication by increasing the thickness of an oil film on sliding surfaces, an intermediate surface (10) is provided between the slopes (7, 8), and an oppositely threaded screw section (11) for sucking the sealed fluid by a pumping effect is provided on the intermediate surface (10) without reaching the boundary (13) between the intermediate surface (10) and the slope (8), so that a threadless region is provided in the entire circumference between the screw section (11) and the boundary (13).Type: ApplicationFiled: February 22, 2008Publication date: May 6, 2010Applicant: NOK CORPORATIONInventors: Hiroki Matsui, Masayuki Tanida, Hirotaka Mizuta, Hideyuki Furuyama, Ken Yoshikawa, Yuki Sato
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Patent number: 7645412Abstract: A sliding portion between a seal lip (7) and the circumference of a shaft (3) is made of a sliding face (10) so that the facial pressure at the initial action time can be lowered to suppress the proceeding of the wear of the seal lip (7) thereby to elongate the lifetime of a sealing device (1). Moreover, screw ridges (12) are formed from an atmospheric side slope (11) to a sliding face (10) so that satisfactory sealing properties can be exhibited initially and endurably for a long time.Type: GrantFiled: February 27, 2007Date of Patent: January 12, 2010Assignee: NOK CorporationInventor: Hideyuki Furuyama
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Publication number: 20090224485Abstract: To improve durability of a seal lip (4) of an oil seal (1) in slidably contact with the peripheral surface of a shaft (23), a lubricating oil supply section (11) for collecting adhered oil and dropping it on the shaft (23) is provided at a forward end portion of an installation section (2), the lubricating oil supply section (11) has projections (12) formed on the inner peripheral surface of the installation section (2) to collect oil on the surface thereof, the surface of each projection (12) has a recess (13) for temporarily accumulating oil, guidance projections, or a slope for collecting the oil, and dams are formed on a forward end face (2a) of the installation section (2) to block the oil flowing down along the circumferential direction on the forward end face (2a) and guides the oil toward each projection (12).Type: ApplicationFiled: February 2, 2007Publication date: September 10, 2009Inventors: Satoshi Yamanaka, Takehiro Nakagawa, Masayuki Tanida, Hideharu Hyakutake, Hiroki Matsui, Hideyuki Furuyama, Go Kanzaki, Shinya Takeda, Kei Sasaki, Akira Yamaguchi
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Publication number: 20070152369Abstract: A sliding portion between a seal lip (7) and the circumference of a shaft (3) is made of a sliding face (10) so that the facial pressure at the initial action time can be lowered to suppress the proceeding of the wear of the seal lip (7) thereby to elongate the lifetime of a sealing device (1). Moreover, screw ridges (12) are formed from an atmospheric side slope (11) to a sliding face (10) so that satisfactory sealing properties can be exhibited initially and endurably for a long time.Type: ApplicationFiled: February 27, 2007Publication date: July 5, 2007Inventor: Hideyuki Furuyama
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Publication number: 20050127613Abstract: A sliding portion between a seal lip (7) and the circumference of a shaft (3) is made of a sliding face (10) so that the facial pressure at the initial action time can be lowered to suppress the proceeding of the wear of the seal lip (7) thereby to elongate the lifetime of a sealing device (1). Moreover, screw ridges (12) are formed from an atmospheric side slope (11) to a sliding face (10) so that satisfactory sealing properties can be exhibited initially and endurably for a long time.Type: ApplicationFiled: January 31, 2003Publication date: June 16, 2005Inventor: Hideyuki Furuyama
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Patent number: 6199869Abstract: A sealing device comprising an annular support structure, a first annular sealing lip made of rubber and supported by the annular support structure, and a second annular sealing lip adjacent to the first annular sealing lip, the second annular sealing lip being made of resin and supported by the annular support structure. The first sealing lip made of rubber is located on the side to be scaled of the second sealing lip made of resin, and grease is held in a space formed by the first and second sealing lips and a shaft.Type: GrantFiled: June 20, 2000Date of Patent: March 13, 2001Assignee: Nok CorporationInventors: Hideyuki Furuyama, Kaoru Anzue, Kouichi Mizunoya, Satoshi Yamanaka
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Patent number: 6102409Abstract: A sealing device including an annular support structure, a first annular sealing lip made of rubber and supported by the annular support structure, and a second annular sealing lip adjacent to the first annular sealing lip, the second annular sealing lip being made of resin and supported by the annular support structure. The first sealing lip made of rubber is located on the side to be sealed of the second sealing lip made of resin, and grease is held in a space formed by the first and second sealing lips and a shaft.Type: GrantFiled: June 26, 1997Date of Patent: August 15, 2000Assignee: Nok CorporationInventors: Hideyuki Furuyama, Kaoru Anzue, Kouichi Mizunoya, Satoshi Yamanaka
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Patent number: 6036193Abstract: Lip-type oil seals (10) having helical pumping ribs (40) are manufactured by preparing a molded foreproduct of the seal and by trimming a hat portion (62) to form a sharp sealing edge (32). Each of the pumping ribs (40) is configured to include a first section (50) of a uniform cross-section and a bilge-shaped second section (52). Trimming is made along a trim line (68) that intersects in between the length of the first sections (50) to ensure that a length of the first sections (52) is preserved between the sealing edge (32) and the second sections (52) regardless of the tolerance of positioning of a trimming knife. Oil seals having an improved initial static and dynamic sealing performance is obtained. The second sections (52) achieves a satisfactory pumping action even after a substantial wear has taken place.Type: GrantFiled: April 20, 1999Date of Patent: March 14, 2000Assignee: NOK CorporationInventors: Tsunehisa Onuma, Hideyuki Furuyama
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Patent number: 5915696Abstract: Lip-type oil seals (10) having helical pumping ribs (40) are manufactured by preparing a molded foreproduct of the seal and by trimming a hat portion (62) to form a sharp sealing edge (32). Each of the pumping ribs (40) is configured to include a first section (50) of a uniform cross-section and a bilge-shaped second section (52). Trimming is made along a trim line (68) that intersects in between the length of the first sections (50) to ensure that a length of the first sections (52) is preserved between the sealing edge (32) and the second sections (52) regardless of the tolerance of positioning of a trimming knife. Oil seals having an improved initial static and dynamic sealing performance is obtained. The second sections (52) achieves a satisfactory pumping action even after a substantial wear has taken place.Type: GrantFiled: June 10, 1997Date of Patent: June 29, 1999Assignee: NOK CorporationInventors: Tsunehisa Onuma, Hideyuki Furuyama
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Patent number: 5759466Abstract: Lip-type oil seals (10) having helical pumping ribs (40) are manufactured by preparing a molded foreproduct of the seal and by trimming a hat portion (62) to form a sharp sealing edge (32). Each of the pumping ribs (40) is configured to include a first section (50) of a uniform cross-section and a bilge-shaped second section (52). Trimming is made along a trim line (68) that intersects in between the length of the first sections (50) to ensure that a length of the first sections (50) is preserved between the sealing edge (32) and the second sections (52) regardless of the tolerance of positioning of a trimming knife. Oil seals having an improved initial static and dynamic sealing performance is obtained. The second sections (52) achieves a satisfactory pumping action even after a substantial wear has taken place.Type: GrantFiled: May 16, 1996Date of Patent: June 2, 1998Assignee: NOK CorporationInventors: Tsunehisa Onuma, Hideyuki Furuyama