Patents by Inventor Navaneethakrishnan Pandian
Navaneethakrishnan Pandian 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).
-
Patent number: 11821498Abstract: Leadscrew and nut actuators are described. The leadscrew and nut actuators include a leadscrew having an external thread and formed from a first material, a nut configured to receive the leadscrew, the nut having an internal thread and formed from a second material, and an insert arranged between the internal thread of the nut and the external thread of the leadscrew, the insert configured to transfer force between the external thread and the internal thread and prevent material contact between the leadscrew and the nut. The insert is formed of a third material different from the first material and the second material.Type: GrantFiled: November 23, 2021Date of Patent: November 21, 2023Assignee: HAMILTON SUNDSTRAND CORPORATIONInventors: Navaneethakrishnan Pandian, Subrahmanyam Veerarapu
-
Publication number: 20230111019Abstract: Leadscrew and nut actuators are described. The leadscrew and nut actuators include a leadscrew having an external thread and formed from a first material, a nut configured to receive the leadscrew, the nut having an internal thread and formed from a second material, and an insert arranged between the internal thread of the nut and the external thread of the leadscrew, the insert configured to transfer force between the external thread and the internal thread and prevent material contact between the leadscrew and the nut. The insert is formed of a third material different from the first material and the second material.Type: ApplicationFiled: November 23, 2021Publication date: April 13, 2023Inventors: Navaneethakrishnan Pandian, Subrahmanyam Veerarapu
-
Publication number: 20230078972Abstract: An actuator assembly for a cowl door is provided. The actuator assembly includes a housing, an actuator configured to drive cowl door extension and cowl door retraction and to support the cowl door during the cowl door extension and the cowl door retraction and a clutch assembly interposed between the actuator and the housing. The clutch assembly is configured to engage a capability of the actuator to drive the cowl door retraction when the cowl door loads the actuator.Type: ApplicationFiled: November 11, 2021Publication date: March 16, 2023Inventor: Navaneethakrishnan Pandian
-
Patent number: 11421463Abstract: An actuator is provided and includes first and second shafts, a friction plate affixed to the second shaft, a one-way clutch that includes an inner diameter portion affixed to the first shaft, an outer diameter portion and a one-way clutch portion interposed between the inner and output diameter portions and a bearing. The bearing is disposed such that a compressive load path is formed from the first shaft, through the bearing and the outer diameter portion and to the friction plate and the second shaft. The one-way clutch portion is configured for free-wheeling during forward rotation of the first shaft that permits forward rotation transmission to the second shaft and for jamming during reverse rotation of the first shaft to create a drag event on the friction plate that inhibits reverse rotation transmission to the second shaft.Type: GrantFiled: November 12, 2019Date of Patent: August 23, 2022Assignee: HAMILTON SUNDSTRAND CORPORATIONInventor: Navaneethakrishnan Pandian
-
Publication number: 20210237856Abstract: An actuator includes: a cylinder, formed of carbon fiber reinforced polymer (CFRP), that extends along an actuator axis between a cylinder first end and a cylinder second end, and defines a cylinder inner diameter surface; a screw shaft that extends along the actuator axis between a screw shaft first end and a screw shaft second end, that is at least partially within the cylinder, and that is operationally connected, intermediate of the screw shaft first and second ends, to the cylinder second end; a screw shaft head affixed to the screw shaft first end, that in operation rotates relative to the cylinder, and that defines a screw shaft head outer diameter surface that faces the cylinder inner diameter surface with a slip fit therebetween; and a bearing ring affixed to the screw shaft head outer diameter surface, that is formed of polyether ether ketone (PEEK).Type: ApplicationFiled: August 27, 2020Publication date: August 5, 2021Inventors: Navaneethakrishnan Pandian, James William Bernard, Jon Pethick, Michael Somerfield, Lee Slater
-
Patent number: 11078708Abstract: A hydraulic piston actuator, which may be used for an aircraft nacelle assembly, includes a housing, a piston, an end gland, and a bearing ring. The housing is concentrically disposed along an axis. The piston is adapted to axially reciprocate within the housing. The end gland is disposed radially between the housing and the piston. The bearing ring is disposed radially between the end gland and the piston.Type: GrantFiled: February 15, 2018Date of Patent: August 3, 2021Assignee: HAMILTON SUNSTRAND CORPORATIONInventors: Navaneethakrishnan Pandian, Rajasekaran Janakiraman
-
Patent number: 10954974Abstract: An actuator assembly includes a housing, a piston rod, and a lost motion device. The housing defines a housing bore that extends along a first axis from a first housing end towards a second housing end. The piston rod is at least partially disposed within the housing bore. The piston rod defines a piston bore that extends from a first piston end towards a second piston end along the first axis. The lost motion device is at least partially disposed within the housing bore and extends into the piston bore. The lost motion device and the piston rod are arranged to move relative to the housing along the first axis.Type: GrantFiled: December 19, 2017Date of Patent: March 23, 2021Assignee: HAMILTON SUNSTRAND CORPORATIONInventor: Navaneethakrishnan Pandian
-
Publication number: 20210071461Abstract: An actuator is provided and includes first and second shafts, a friction plate affixed to the second shaft, a one-way clutch that includes an inner diameter portion affixed to the first shaft, an outer diameter portion and a one-way clutch portion interposed between the inner and output diameter portions and a bearing. The bearing is disposed such that a compressive load path is formed from the first shaft, through the bearing and the outer diameter portion and to the friction plate and the second shaft. The one-way clutch portion is configured for free-wheeling during forward rotation of the first shaft that permits forward rotation transmission to the second shaft and for jamming during reverse rotation of the first shaft to create a drag event on the friction plate that inhibits reverse rotation transmission to the second shaft.Type: ApplicationFiled: November 12, 2019Publication date: March 11, 2021Inventor: Navaneethakrishnan Pandian
-
Patent number: 10830365Abstract: A check valve includes a housing, a first valve, and a second valve. The housing has a first portion that defines a first chamber and a second portion that defines a second chamber. The first valve is disposed within and is movable relative to the housing. The second valve is at least partially extends into the first valve. Responsive to a fluid flow in a first direction, the second valve and the first valve moves towards a proximal end of the housing and the fluid flow flows around the first valve towards a component.Type: GrantFiled: October 12, 2018Date of Patent: November 10, 2020Assignee: HAMILTON SUNDSTRAND CORPORATIONInventors: Navaneethakrishnan Pandian, Vishnu Subramanian, Rajasekaran Janakiraman
-
Patent number: 10816074Abstract: An actuator system comprising a rotatable lock mechanism defining a path for an actuator pin as the actuator is expanded and retracted, wherein the lock mechanism defines an entry passage through which the pin enters as the actuator extends, a guide surface along which the pin travels from the entry passage as the actuator retracts, a locking recess into which the pin is guided by the guide surface, and an exit passage into which the pin is guided as it is caused to leave the lock recess by extension of the actuator and subsequent retraction; whereby a detent surface is provided to prevent the pin returning back into the lock recess when the actuator is extended to cause the pin to leave the lock recess; and whereby the lock mechanism provides a sloping engagement surface for the pin, either side of the entry passage.Type: GrantFiled: February 19, 2016Date of Patent: October 27, 2020Assignees: GOODRICH ACTUATION SYSTEMS LIMITED, GOODRICH AEROSPACE SERVICES PRIVATE LIMITEDInventors: Navaneethakrishnan Pandian, Narendran Muralidharan, David John Langford
-
Patent number: 10393153Abstract: An actuator system comprising a rotatable lock mechanism defining a path for an actuator pin as the actuator is expanded and retracted, wherein the lock mechanism defines an entry passage through which the pin enters as the actuator extends, a guide surface along which the pin travels from the entry passage as the actuator retracts, a locking recess into which the pin is guided by the guide surface, and an exit passage into which the pin is guided as it is caused to leave the lock recess by extension of the actuator and subsequent retraction; whereby a detent surface is provided to prevent the pin returning back into the lock recess when the actuator is extended to cause the pin to leave the lock recess.Type: GrantFiled: February 28, 2017Date of Patent: August 27, 2019Assignee: GOODRICH AEROSPACE SERVICES PRIVATE LIMITEDInventor: Navaneethakrishnan Pandian
-
Publication number: 20190145144Abstract: A hydraulic piston actuator, which may be used for an aircraft nacelle assembly, includes a housing, a piston, an end gland, and a bearing ring. The housing is concentrically disposed along an axis. The piston is adapted to axially reciprocate within the housing. The end gland is disposed radially between the housing and the piston. The bearing ring is disposed radially between the end gland and the piston.Type: ApplicationFiled: February 15, 2018Publication date: May 16, 2019Inventors: Navaneethakrishnan Pandian, Rajasekaran Janakiraman
-
Publication number: 20190128436Abstract: A check valve includes a housing, a first valve, and a second valve. The housing has a first portion that defines a first chamber and a second portion that defines a second chamber. The first valve is disposed within and is movable relative to the housing. The second valve is at least partially extends into the first valve. Responsive to a fluid flow in a first direction, the second valve and the first valve moves towards a proximal end of the housing and the fluid flow flows around the first valve towards a component.Type: ApplicationFiled: October 12, 2018Publication date: May 2, 2019Inventors: Navaneethakrishnan Pandian, Vishnu Subramanian, Rajasekaran Janakiraman
-
Publication number: 20190120262Abstract: An actuator assembly includes a housing, a piston rod, and a lost motion device. The housing defines a housing bore that extends along a first axis from a first housing end towards a second housing end. The piston rod is at least partially disposed within the housing bore. The piston rod defines a piston bore that extends from a first piston end towards a second piston end along the first axis. The lost motion device is at least partially disposed within the housing bore and extends into the piston bore. The lost motion device and the piston rod are arranged to move relative to the housing along the first axis.Type: ApplicationFiled: December 19, 2017Publication date: April 25, 2019Inventor: Navaneethakrishnan Pandian
-
Publication number: 20170321731Abstract: An actuator system comprising a rotatable lock mechanism defining a path for an actuator pin as the actuator is expanded and retracted, wherein the lock mechanism defines an entry passage through which the pin enters as the actuator extends, a guide surface along which the pin travels from the entry passage as the actuator retracts, a locking recess into which the pin is guided by the guide surface, and an exit passage into which the pin is guided as it is caused to leave the lock recess by extension of the actuator and subsequent retraction; whereby a detent surface is provided to prevent the pin returning back into the lock recess when the actuator is extended to cause the pin to leave the lock recess.Type: ApplicationFiled: February 28, 2017Publication date: November 9, 2017Inventor: Navaneethakrishnan Pandian
-
Publication number: 20160245387Abstract: An actuator system comprising a rotatable lock mechanism defining a path for an actuator pin as the actuator is expanded and retracted, wherein the lock mechanism defines an entry passage through which the pin enters as the actuator extends, a guide surface along which the pin travels from the entry passage as the actuator retracts, a locking recess into which the pin is guided by the guide surface, and an exit passage into which the pin is guided as it is caused to leave the lock recess by extension of the actuator and subsequent retraction; whereby a detent surface is provided to prevent the pin returning back into the lock recess when the actuator is extended to cause the pin to leave the lock recess; and whereby the lock mechanism provides a sloping engagement surface for the pin, either side of the entry passage.Type: ApplicationFiled: February 19, 2016Publication date: August 25, 2016Inventors: Navaneethakrishnan Pandian, Narendran Muralidharan, David John Langford