Patents by Inventor Daniel C. Egan
Daniel C. Egan 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: 7481659Abstract: The invention is directed to a memory card including a first connector that conforms to a first connection standard and a second connector that conforms to a second connection standard. The connectors are provided on a movable member disposed within a housing of the memory card. The movable member may be moved between a first position, in which the first connector is exposed, and a second position, in which the second connector is exposed.Type: GrantFiled: January 5, 2007Date of Patent: January 27, 2009Assignee: Imation Corp.Inventors: Gregory H. Johnson, Daniel C. Egan
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Publication number: 20080166920Abstract: The invention is directed to a memory card including a first connector that conforms to a first connection standard and a second connector that conforms to a second connection standard. The connectors are provided on a movable member disposed within a housing of the memory card. The movable member may be moved between a first position, in which the first connector is exposed, and a second position, in which the second connector is exposed.Type: ApplicationFiled: January 5, 2007Publication date: July 10, 2008Applicant: Imation Corp.Inventors: Gregory H. Johnson, Daniel C. Egan
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Patent number: 6478244Abstract: A tape reel assembly for use with a data storage tape cartridge. The data storage tape cartridge includes a housing, a tape reel pin, the tape reel assembly, and a storage tape. The tape reel assembly is rotatably associated with the tape reel pin and includes a hub, a spherical piece and a sleeve. The spherical piece is insert molded within an axial bore of the hub and provides a thrust surface. The sleeve is also insert molded within the axial bore of the hub and provides a journal bearing surface. In accordance with a method of the present invention, the tape reel assembly is formed as part of an injection molding process, whereby a core pin precisely positions the spherical piece and co-axially centers the sleeve relative to an outer, tape winding surface of the hub.Type: GrantFiled: June 28, 2001Date of Patent: November 12, 2002Assignee: Imation Corp.Inventors: Christopher J. Zwettler, Daniel C. Egan
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Data storage tape cartridge and tape path with an idler wrap guide for reduced lateral tape movement
Patent number: 6405957Abstract: A data storage tape cartridge including a housing, first and second tape reels, a storage tape, first and second corner guides and an idler wrap guide. The housing defines a head access window. The tape reels are rotatably disposed within the housing, with the storage tape extending between the tape reels. The first and second comer guides are disposed within the housing at opposite sides of the head access window. Finally, the idler wrap guide is disposed within the housing and defines a tape path extending from the first tape reel to the idler wrap guide, and from the idler wrap guide to the first corner guide. The idler wrap guide is configured to frictionally dampen lateral movement of the storage tape upon rotation of the tape reels to greatly reduce servo off track events.Type: GrantFiled: February 15, 2000Date of Patent: June 18, 2002Assignee: Imation Corp.Inventors: Jerry L. Alexander, Daniel C. Egan, Douglas W. Johnson, Christopher J. Zwettler, William J. Vanderheyden, Albert E. Bass, Jr. -
Publication number: 20010054662Abstract: A tape reel assembly for use with a data storage tape cartridge. The data storage tape cartridge includes a housing, a tape reel pin, the tape reel assembly, and a storage tape. The tape reel assembly is rotatably associated with the tape reel pin and includes a hub, a spherical piece and a sleeve. The spherical piece is insert molded within an axial bore of the hub and provides a thrust surface. The sleeve is also insert molded within the axial bore of the hub and provides a journal bearing surface. In accordance with a method of the present invention, the tape reel assembly is formed as part of an injection molding process, whereby a core pin precisely positions the spherical piece and co-axially centers the sleeve relative to an outer, tape winding surface of the hub.Type: ApplicationFiled: June 28, 2001Publication date: December 27, 2001Inventors: Christopher J. Zwettler, Daniel C. Egan
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Patent number: 6318659Abstract: A tape reel assembly for use with a data storage tape cartridge. The data storage tape cartridge includes a housing, a tape reel pin, the tape reel assembly, and a storage tape. The housing includes a first housing section and a second housing section. The tape reel pin extends in a generally perpendicular fashion relative to an interior surface of the first housing section. With this configuration, the tape reel pin forms a cylindrical side surface and terminates in a leading end. The tape reel assembly is rotatably associated with the tape reel pin and includes a hub and a sleeve. The hub defines an axial bore. In one preferred embodiment, the tape reel assembly further includes opposing flanges connected to the hub. Regardless, the sleeve is disposed within the axial bore and forms a thrust surface. Finally, the storage tape is maintained by the hub.Type: GrantFiled: June 27, 2000Date of Patent: November 20, 2001Assignee: Imation Corp.Inventors: Christopher J. Zwettler, Daniel C. Egan
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Patent number: 6142404Abstract: A compliant tape guide having a compliant member with optimized planar stiffness. The compliant tape guide includes a top support plate, a bottom support plate, a bearing piece, the compliant member and a biasing member. The bearing piece extends between the top and bottom support plate in a generally perpendicular fashion. The compliant member is associated with an inner surface of the bottom support plate and includes a base, opposing legs, an edge receiving surface and a planar stiffness body. The opposing legs extend from the base. The edge receiving surface is attached to the opposing legs opposite the base to define an opening. The planar stiffness body is disposed within the opening and is configured to increase an in-plane stiffness of the compliant member in a plane substantially parallel to a plane of the base. Finally, the biasing member is associated with the compliant member to bias the edge receiving surface into engagement with a storage tape during use.Type: GrantFiled: November 16, 1998Date of Patent: November 7, 2000Assignee: Imation Corp.Inventors: John D. Willems, Daniel C. Egan, Douglas W. Johnson, Leif O. Erickson
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Patent number: 6027778Abstract: The present invention provides a novel one-piece capstan for a tape cartridge which provides good static dissipative properties and wear resistance. The capstan material of the present invention has a charge decay time of no more than 5 seconds as measured according to Mil B-81705C standard. The capstan material also has a flexural modulus of at least 200,000 psi (1379 MPa). The capstan comprises a hard, dimensionally stable polymer and a static dissipating polymer. The capstan also has an improved structure and geometry which enables the part to be easily molded, reduces drive force requirements with a reduction of material from the prior art design, but with no significant loss of performance properties.Type: GrantFiled: September 15, 1994Date of Patent: February 22, 2000Assignee: Imation Corp.Inventors: Karunasena A. Alahapperuma, Anthony B. Ferguson, David P. Smith, David L. Tussey, Saurin J. Shah, Dean E. Sitz, Randy S. Bay, Daniel C. Egan, Wolfgang G. Schoeppel
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Patent number: 5564647Abstract: A high performance tape reel with an outwardly facing cylindrical tape winding surface parallel to a drive pin bore on a reel hub. The hub has a pair of hub reference surfaces adjacent to the winding surface for aligning tape flanges. Flanges are attached to the hub at a location remote from the winding surface and magnetic tape. A drive cap with a reel pin bearing surface is attached to the hub so that the reel pin bearing surface substantially covers one entrance to the drive pin bore.Type: GrantFiled: June 27, 1994Date of Patent: October 15, 1996Assignee: Imation Corp.Inventors: Randy S. Bay, Daniel C. Egan, Leif O. Erickson, John W. Louks, Donald L. Pochardt
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Patent number: 5516055Abstract: A corner roller tape tension enhancer assembly for use with a corner roller in a belt driven magnetic tape cartridge. The assembly comprises a cylindrical corner roller having an outer wall for contact with a drive belt and an inner wall suitable for mounting the corner roller on an axial mounting structure. The assembly also comprises a fatigue resistant metal spring positioned against a portion of the corner roller for controlling magnetic tape tension and to produce a uniform tape tension with respect to drive force over a wide speed range.Type: GrantFiled: March 28, 1994Date of Patent: May 14, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Sten R. Gerfast, Daniel C. Egan, Frank H. Phillips, Clarence W. Schultz, Ronald D. Stimpson
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Patent number: 5480103Abstract: Mechanical incompatibility features between a first and a second belt-driven magnetic recording tape cartridge comprise a shorter rail-mating channel and a countersunk lip in one of the side walls of the first cartridge. The features prevent the first cartridge from being inserted into a tape drive for reading the second cartridge, and vice versa, in order to mechanically distinguish between belt-driven cartridges containing magnetic tapes with different recording characteristics, but having the same form factor.Type: GrantFiled: October 24, 1994Date of Patent: January 2, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Sten R. Gerfast, Daniel C. Egan
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Patent number: 4364426Abstract: A tire tread design is disclosed comprising a plurality of spaced tread blocks defined by a plurality of first grooves spaced circumferentially of said tire and extending generally diagonally across a tread, the first grooves channeling water from the center of the tread portion and extending continuously from one side of the tread portion to the other. Each first groove comprises an intermediate portion which extends substantially circumferentially of said tire, the intermediate portions of two adjacent first grooves being spaced by a tread block defined by adjacent first grooves.Type: GrantFiled: March 26, 1981Date of Patent: December 21, 1982Assignee: Dunlop Tire & Rubber CorporationInventors: Anthony M. Mills, Daniel C. Egan
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Patent number: D268490Type: GrantFiled: March 26, 1981Date of Patent: April 5, 1983Assignee: Dunlop Tire and Rubber CorporationInventors: Anthony M. Mills, Daniel C. Egan
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Patent number: D288549Type: GrantFiled: August 23, 1984Date of Patent: March 3, 1987Assignee: Dunlop Tire and Rubber Co.Inventors: Anthony M. Mills, Daniel C. Egan
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Patent number: D383125Type: GrantFiled: March 27, 1995Date of Patent: September 2, 1997Assignee: Imation Corp.Inventors: Daniel C. Egan, Randy S. Bay, James J. Evanoff, Leif O. Erickson, Armando J. Argumedo, Steven L. Felde, Scott M. Rockwell, Kenneth R. Shelley