Patents by Inventor Upesh Patel
Upesh Patel 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: 9605666Abstract: A linear compressor comprising a cylinder part including a cylinder bore. A piston disposed in, and is slidable within, the bore. A main spring connects the cylinder part directly or indirectly to the piston. A connecting rod connects between the main spring and the piston. A stator has an air gap, and the connecting rod passes through the air gap. At least one armature pole is located along the connecting rod.Type: GrantFiled: March 31, 2006Date of Patent: March 28, 2017Assignee: Fisher & Paykel Appliances LimitedInventors: Neville David Seagar, Ian Campbell McGill, Gerald David Duncan, Upesh Patel, Andrew Paul Taylor, Geoffrey Alan Lee
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Patent number: 8684706Abstract: A linear compressor has a hollow piston with crown and sidewall. The piston reciprocates in a cylinder. A piston rod connects the piston to a spring. A connection between the piston rod and the piston transmits axial forces directly to the piston crown. The connection transmits lateral forces to the piston at an axial location away from the piston crown. The connection allows rotational flexibility between the piston and the piston rod transverse to and uniformly around the piston reciprocation axis. Other improvements in or relating to linear compressors are disclosed and claimed.Type: GrantFiled: May 6, 2008Date of Patent: April 1, 2014Assignee: Fisher & Paykel Appliances LimitedInventors: Ian Campbell McGill, David Julian White, Upesh Patel
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Patent number: 8562311Abstract: A linear compressor has a hollow piston with crown and sidewall. The piston reciprocates in a cylinder. A piston rod connects the piston to a spring. A connection between the piston rod and the piston transmits axial forces directly to the piston crown. The connection transmits lateral forces to the piston at an axial location away from the piston crown. The connection allows rotational flexibility between the piston and the piston rod transverse to and uniformly around the piston reciprocation axis. Other improvements in or relating to linear compressors are disclosed and claimed.Type: GrantFiled: May 28, 2004Date of Patent: October 22, 2013Assignee: Fisher & Paykel Appliances LimitedInventors: John H. Boyd, Jr., Upesh Patel, Timothy Gordon Read
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Patent number: 8177523Abstract: A linear compressor includes a cylinder part with a cylinder bore. A piston is disposed in the bore and slidable therein. A main spring connects the cylinder part to the piston. A connecting member connects between the main spring and the piston. The connecting member passes through the air gap of a stator of a linear electric motor. At least one armature pole of the motor is located along the connecting member. The stator comprises a plurality stator parts opposed across the air gap. The cylinder part includes a tapered clamp for each stator part. The tapered clamp widens outward from the air gap. Each stator part has a matching taper and is engaged in the tapered clamp.Type: GrantFiled: July 21, 2006Date of Patent: May 15, 2012Assignee: Fisher & Paykel Appliances LimitedInventors: Upesh Patel, Gordon Cameron Otte
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Patent number: 8141581Abstract: A linear compressor has a hollow piston with crown and sidewall. The piston reciprocates in a cylinder. A piston rod connects the piston to a spring. A connection between the piston rod and the piston transmits axial forces directly to the piston crown. The connection transmits lateral forces to the piston at an axial location away from the piston crown. The connection allows rotational flexibility between the piston and the piston rod transverse to and uniformly around the piston reciprocation axis. Other improvements in or relating to linear compressors are disclosed.Type: GrantFiled: May 6, 2008Date of Patent: March 27, 2012Assignee: Fisher & Paykel Appliances LimitedInventors: John H. Boyd, Jr., Upesh Patel, Gordon Cameron Otte, Timothy Gordon Read
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Publication number: 20080240940Abstract: A linear compressor has a hollow piston with crown and sidewall. The piston reciprocates in a cylinder. A piston rod connects the piston to a spring. A connection between the piston rod and the piston transmits axial forces directly to the piston crown. The connection transmits lateral forces to the piston at an axial location away from the piston crown. The connection allows rotational flexibility between the piston and the piston rod transverse to and uniformly around the piston reciprocation axis. Other improvements in or relating to linear compressors are disclosed and claimed.Type: ApplicationFiled: May 6, 2008Publication date: October 2, 2008Inventors: JOHN H. BOYD, UPESH PATEL, TIMOTHY GORDON READ, GORDON CAMERON OTTE
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Publication number: 20080240950Abstract: A linear compressor has a hollow piston with crown and sidewall. The piston reciprocates in a cylinder. A piston rod connects the piston to a spring. A connection between the piston rod and the piston transmits axial forces directly to the piston crown. The connection transmits lateral forces to the piston at an axial location away from the piston crown. The connection allows rotational flexibility between the piston and the piston rod transverse to and uniformly around the piston reciprocation axis. Other improvements in or relating to linear compressors are disclosed and claimed.Type: ApplicationFiled: May 6, 2008Publication date: October 2, 2008Inventors: IAN CAMPBELL McGILL, DAVID JULIAN WHITE, UPESH PATEL
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Publication number: 20080213109Abstract: A linear compressor includes a cylinder part with a cylinder bore. A piston is disposed in the bore and slidable therein. A main spring connects the cylinder part to the piston. A connecting member connects between the main spring and the piston. The connecting member passes through the air gap of a stator of a linear electric motor. At least one armature pole of the motor is located along the connecting member. The stator comprises a plurality stator parts opposed across the air gap. The cylinder part includes a tapered clamp for each stator part. The tapered clamp widens outward from the air gap. Each stator part has a matching taper and is engaged in the tapered clamp.Type: ApplicationFiled: July 21, 2006Publication date: September 4, 2008Inventors: Upesh Patel, Gordon Cameron Otte
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Patent number: 7185431Abstract: A method of manufacturing a linear compressor includes measures to account for possible variations in manufacture of the spring connecting between a cylinder part and a piston part. In the method, the piston is located at a predetermined axial position in the bore of the cylinder of the compressor. A spring that is connected with the cylinder part is extended so that a piston connection point of the spring is at a position based on a predetermined displacement of the spring or a position in which the spring exerts a predetermined reaction force. In this position, this piston and the spring connection point are thus separated by a distance that depends on the actual formed dimension of the individual spring. The piston and the piston connection point are subsequently joined to have a rigid axial separation that is fixed according to the separation attained in these steps.Type: GrantFiled: October 17, 2000Date of Patent: March 6, 2007Assignee: Fisher & Paykel Appliances LimitedInventors: Neville David Seagar, Ian Campbell McGill, Gerald David Duncan, Upesh Patel, Andrew Paul Taylor, Geoffrey Alan Lee
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Publication number: 20060171822Abstract: A linear compressor comprising has a cylinder part including a cylinder bore. A piston disposed in, and is slidable within, the bore. A main spring connects the cylinder part directly or indirectly the piston. A connecting rod connects between the main spring and the piston. A stator has an air gap, and the connecting rod passes through the air gap. At least one armature pole is located along the connecting rod. Other inventions are also set forth.Type: ApplicationFiled: March 31, 2006Publication date: August 3, 2006Inventors: Neville Seagar, Ian McGill, Gerald Duncan, Upesh Patel, Andrew Taylor, Geoffrey Lee
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Publication number: 20050008512Abstract: A linear compressor has a hollow piston with crown and sidewall. The piston reciprocates in a cylinder. A piston rod connects the piston to a spring. A connection between the piston rod and the piston transmits axial forces directly to the piston crown. The connection transmits lateral forces to the piston at an axial location away from the piston crown. The connection allows rotational flexibility between the piston and the piston rod transverse to and uniformly around the piston reciprocation axis. Other improvements in or relating to linear compressors are disclosed and claimed.Type: ApplicationFiled: May 28, 2004Publication date: January 13, 2005Inventors: Ian McGill, John Boyd, David White, Upesh Patel, Craig Bruce, Timothy Read, Gordon Otte, Brian Bonniface, Gordon Mallinson
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Patent number: D510940Type: GrantFiled: August 4, 2004Date of Patent: October 25, 2005Assignee: Fisher & Paykel Appliances LimitedInventors: John H. Boyd, Jr., Upesh Patel, Timothy Gordon Read
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Patent number: D500327Type: GrantFiled: December 1, 2003Date of Patent: December 28, 2004Assignee: Fisher & Paykel Appliances LimitedInventors: John H. Boyd, Jr., Upesh Patel, Timothy Gordon Read