Patents by Inventor Chris M. Woldemar
Chris M. Woldemar 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: 9865298Abstract: Provided herein is an apparatus, including a stationary component, a rotatable component configured to rotate relative to the stationary component, and a conical pumping seal formed between the stationary component and the rotatable component.Type: GrantFiled: March 13, 2014Date of Patent: January 9, 2018Assignee: Seagate Technology LLCInventors: Hans Leuthold, Lynn Bich-Quy Le, Chris M. Woldemar
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Patent number: 9524745Abstract: A device including a first axial portion, a second axial portion, and a radial portion is disclosed. A portion of the second axial portion is configured to connect to a hub. An upper surface of the second axial portion may be positioned above an upper surface of a sleeve limiter shoulder when the portion of the second axial portion is connected to the hub. The radial portion connects the first axial portion to the second axial portion. The radial portion is configured to increase stiffness by increasing surface contact between the radial portion and the sleeve limiter shoulder.Type: GrantFiled: February 28, 2014Date of Patent: December 20, 2016Assignee: Seagate Technology LLCInventors: Lynn Bich-Quy Le, Hans Leuthold, Chris M. Woldemar
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Patent number: 9482276Abstract: Provided herein is an apparatus, comprising a stationary component comprising a cup having a volume reserved for receiving a predetermined amount of lubricating fluid; a rotatable component comprising a sleeve, wherein the rotatable component is fitted within the stationary component in a position substantially above the volume; and an annular member configured for forming a thrust bearing with the sleeve.Type: GrantFiled: January 24, 2014Date of Patent: November 1, 2016Assignee: Seagate Technology, LLCInventors: Chris M. Woldemar, Hans L. Leuthold
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Patent number: 9484059Abstract: A fluid dynamic bearing motor and method are provided for use with various disc drive memory device products differently rated by operational rotational speed. The operational speeds are those speeds measured during reading and writing memory operations to the memory device. In an aspect, the present invention meets full operating requirements, including stiffness and power requirements, at multiple rated speeds for use with either standard or high-end performance disc drive products. Costs associated with a dedicated manufacturing line for high-end products are substantially reduced. A single manufacturing line can serve both standard and high-end disc drive memory device products. The present invention is especially useful in reducing costs of 2.5 inch notebook products that are typically marketed in two levels of performance, namely, 5400 RPM standard performance products and 7200 RPM high performance products.Type: GrantFiled: April 12, 2013Date of Patent: November 1, 2016Assignee: Seagate Technology LLCInventors: PohLye Lim, PowMing Yap, ChunHong D. Jing, WeiRhen S. Hoon, Chris M. Woldemar, Paco Gregor Flores, Anthony Joseph Aiello
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Patent number: 9418697Abstract: Provided is an apparatus, including a stationary component; a rotatable component, wherein the stationary component and the rotatable component are positioned for relative rotation; a first sealing means positioned in a radial channel at a first axial end of the rotatable component; a second sealing means positioned in an axial channel at a second axial end of the rotatable component; and a fluid reservoir adjacent to the first sealing means and extending radially outward from the first sealing means, wherein the fluid reservoir is positioned radially outward from the pump seal, and wherein the fluid reservoir extends radially outward from the pump seal.Type: GrantFiled: November 19, 2013Date of Patent: August 16, 2016Assignee: Seagate Technology LLCInventors: Chris M. Woldemar, Hans Leuthold
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Patent number: 9322109Abstract: A method includes rotating a first motor part around a first structure substantially similar to a second motor part. The method also includes applying a first current to the first structure to electro-chemically machine the first motor part.Type: GrantFiled: August 1, 2013Date of Patent: April 26, 2016Assignee: Seagate Technology LLCInventors: Timothy Edward Langlais, Chris M. Woldemar, Troy M. Herndon
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Publication number: 20150364156Abstract: Provided is an apparatus including a motor configured to rotate a rotating member at a rotational speed based on an applied current; and a controller configured to modify one or more operating parameters in response to determining whether a change in an environment has occurred based on the applied current.Type: ApplicationFiled: June 17, 2014Publication date: December 17, 2015Inventors: Xiong Liu, Chris M. Woldemar, Lihong Zhang, ShuangQuan Min
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Patent number: 9209670Abstract: Provided herein, is an apparatus that includes a first weld attaching a first motor component and a second motor component, a second weld attaching the first motor component and the second motor component, and a plurality of spot welds along a joint between the first and second weld wherein the plurality of spot welds are configured to align the first motor component and the second motor component.Type: GrantFiled: September 5, 2013Date of Patent: December 8, 2015Assignee: Seagate Technology LLCInventor: Chris M. Woldemar
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Patent number: 9202511Abstract: Provided is an apparatus including a motor configured to rotate a rotating member at a rotational speed based on an applied current; and a controller configured to modify one or more operating parameters in response to determining whether a change in an environment has occurred based on the applied current.Type: GrantFiled: June 17, 2014Date of Patent: December 1, 2015Assignee: Seagate Technology LLCInventors: Xiong Liu, Chris M. Woldemar, Lihong Zhang, ShuangQuan Min
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Publication number: 20150263585Abstract: Provided herein is an apparatus, including a stator assembly and a hub configured to rotate relative to the stator assembly. The hub comprises a magnet radially outside the stator assembly. The apparatus further includes a fastener coupling radially inside the stator assembly.Type: ApplicationFiled: March 13, 2014Publication date: September 17, 2015Applicant: Seagate Technology LLCInventors: Hans Leuthold, Lynn Bich-Quy Le, Chris M. Woldemar
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Publication number: 20150260293Abstract: Provided herein is an apparatus, including a stationary component, a rotatable component configured to rotate relative to the stationary component, and a conical pumping seal formed between the stationary component and the rotatable component.Type: ApplicationFiled: March 13, 2014Publication date: September 17, 2015Applicant: Seagate Technology LLCInventors: Hans Leuthold, Lynn Bich-Quy Le, Chris M. Woldemar
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Publication number: 20150248913Abstract: A device including a first axial portion, a second axial portion, and a radial portion is disclosed. A portion of the second axial portion is configured to connect to a hub. An upper surface of the second axial portion may be positioned above an upper surface of a sleeve limiter shoulder when the portion of the second axial portion is connected to the hub. The radial portion connects the first axial portion to the second axial portion. The radial portion is configured to increase stiffness by increasing surface contact between the radial portion and the sleeve limiter shoulder.Type: ApplicationFiled: February 28, 2014Publication date: September 3, 2015Applicant: Seagate Technology LLCInventors: Lynn Bich-Quy Le, Hans Leuthold, Chris M. Woldemar
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Publication number: 20150248912Abstract: Provided herein is an apparatus, including a first part of a data storage device and a second part of the data storage drive. The second part of the data storage device is fused to the first part substantially throughout opposing surfaces of the first part and the second part, where the opposing surfaces are in contact with each other.Type: ApplicationFiled: February 28, 2014Publication date: September 3, 2015Applicant: Seagate Technology LLCInventors: Hans Leuthold, Lynn Bich-Quy Le, Chris M. Woldemar
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Publication number: 20150211576Abstract: Provided herein is an apparatus, comprising a stationary component comprising a cup having a volume reserved for receiving a predetermined amount of lubricating fluid; a rotatable component comprising a sleeve, wherein the rotatable component is fitted within the stationary component in a position substantially above the volume; and an annular member configured for forming a thrust bearing with the sleeve.Type: ApplicationFiled: January 24, 2014Publication date: July 30, 2015Applicant: SEAGATE TECHNOLOGY LLCInventors: Chris M. Woldemar, Hans L. Leuthold
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Publication number: 20150139574Abstract: Provided is an apparatus, including a stationary component; a rotatable component, wherein the stationary component and the rotatable component are positioned for relative rotation; a first sealing means positioned in a radial channel at a first axial end of the rotatable component; a second sealing means positioned in an axial channel at a second axial end of the rotatable component; and a fluid reservoir adjacent to the first sealing means and extending radially outward from the first sealing means, wherein the fluid reservoir is positioned radially outward from the pump seal, and wherein the fluid reservoir extends radially outward from the pump seal.Type: ApplicationFiled: November 19, 2013Publication date: May 21, 2015Applicant: SEAGATE TECHNOLOGY LLCInventors: Chris M. Woldemar, Hans Leuthold
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Publication number: 20150061469Abstract: Provided herein, is an apparatus that includes a first weld attaching a first motor component and a second motor component, a second weld attaching the first motor component and the second motor component, and a plurality of spot welds along a joint between the first and second weld wherein the plurality of spot welds are configured to align the first motor component and the second motor component.Type: ApplicationFiled: September 5, 2013Publication date: March 5, 2015Applicant: Seagate Technology LLCInventor: Chris M. Woldemar
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Publication number: 20150061438Abstract: An apparatus includes a hub. The apparatus also includes a back iron that is coupled to the hub. In addition, a magnetic annulus is co-formed to the back iron.Type: ApplicationFiled: September 5, 2013Publication date: March 5, 2015Applicant: SEAGATE TECHNOLOGY LLCInventors: Hans Leuthold, Chris M. Woldemar, Norbert Steven Parsoneault
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Publication number: 20150034494Abstract: A method includes rotating a first motor part around a first structure substantially similar to a second motor part. The method also includes applying a first current to the first structure to electro-chemically machine the first motor part.Type: ApplicationFiled: August 1, 2013Publication date: February 5, 2015Applicant: Seagate Technology LLCInventors: Timothy Edward Langlais, Chris M. Woldemar, Troy M. Herndon
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Patent number: 8913344Abstract: An apparatus includes a fluid dynamic bearing and means for dynamically adjusting the stiffness or damping of the fluid dynamic bearing.Type: GrantFiled: October 25, 2013Date of Patent: December 16, 2014Assignee: Seagate Technology LLCInventors: Norbert Steven Parsoneault, Hans Leuthold, Paco Gregor Flores, Timothy Edward Langlais, Matthew M. McConnell, Chris M. Woldemar
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Publication number: 20140139948Abstract: A fluid dynamic bearing motor and method are provided for use with various disc drive memory device products differently rated by operational rotational speed. The operational speeds are those speeds measured during reading and writing memory operations to the memory device. In an aspect, the present invention meets full operating requirements, including stiffness and power requirements, at multiple rated speeds for use with either standard or high-end performance disc drive products. Costs associated with a dedicated manufacturing line for high-end products are substantially reduced. A single manufacturing line can serve both standard and high-end disc drive memory device products. The present invention is especially useful in reducing costs of 2.5 inch notebook products that are typically marketed in two levels of performance, namely, 5400 RPM standard performance products and 7200 RPM high performance products.Type: ApplicationFiled: April 12, 2013Publication date: May 22, 2014Applicant: SEAGATE TECHNOLOGY LLCInventors: PohLye Lim, PowMing Yap, ChunHong D. Jing, WeiRhen S. Hoon, Chris M. Woldemar, Paco Gregor Flores, Anthony Joseph Aiello