Patents by Inventor James O. Myrhum, JR.
James O. Myrhum, JR. 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: 10195755Abstract: A hand-held knockout driver includes a main housing having a handle portion, a motor positioned within the main housing, a hydraulic assembly driven by the motor and including a reservoir containing hydraulic fluid, a secondary housing coupled to the main housing and defining a bore therein, a working piston moveable within the bore between a rest position and an actuated position, and a work zone defined between the secondary housing and the working piston into which pressurized hydraulic fluid discharged from the hydraulic assembly is received. One unit of fluid is added to the work zone to move the working piston from the rest position to the actuated position. The reservoir has a fill capacity no greater than about 1.5 units of fluid.Type: GrantFiled: October 23, 2015Date of Patent: February 5, 2019Assignee: MILWAUKEE ELECTRIC TOOL CORPORATIONInventors: James O. Myrhum, Jr., Troy C. Thorson, Jeremy R. Ebner, Sean T. Kehoe, Joseph H. Ellice, Jeffrey S. Holly
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Publication number: 20190001393Abstract: A swage mechanism operable to expand an inner diameter of tubing. The swage mechanism includes a housing defining a longitudinal axis, a plurality of jaws coupled to the housing and movable relative to the longitudinal axis for selectively gripping the tubing, and a ram including a cylindrical portion and a frusto-conical head portion. The frusto-conical head portion of the ram is insertable into the tubing to expand the inner diameter of the tubing.Type: ApplicationFiled: June 11, 2018Publication date: January 3, 2019Inventors: James O. Myrhum, JR., Noah Z. Fang
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Patent number: 9782909Abstract: A draw stud connector, for use on a punch driver, includes a draw stud having a first end. The draw stud connector also includes a body defining an axis therethrough, the body forming a cavity having an open end, and a wedge at least partially positioned within the cavity and moveable with respect to the body both axially and radially. The wedge allows the first end of the draw stud to move axially into the cavity but does not permit axial removal of the first end of the draw stud from the cavity.Type: GrantFiled: June 30, 2015Date of Patent: October 10, 2017Assignee: MILWAUKEE ELECTRIC TOOL CORPORATIONInventors: Sean T. Kehoe, James O. Myrhum, Jr.
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Patent number: 9669533Abstract: A valve includes a valve body, an inlet orifice in fluid communication with a first fluid volume, an outlet aperture in fluid communication with a second fluid volume and in selective fluid communication with the inlet orifice by a first fluid flow path, an activation member axially movable relative to the valve body, and a plunger axially movable within the valve body. The plunger includes an aperture therethrough defining a second fluid flow path between the first and second fluid volumes. The valve is operable in a first mode in which fluid flow is only permitted along the first fluid flow path in response to manual actuation of the activation member. The valve is operable in a second mode in which fluid flow is only permitted along the second fluid flow path when a pressure difference between the first and second fluid volumes reaches a predetermined value.Type: GrantFiled: March 31, 2015Date of Patent: June 6, 2017Assignee: MILWAUKEE ELECTRIC TOOL CORPORATIONInventor: James O. Myrhum, Jr.
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Publication number: 20170015016Abstract: A draw stud assembly for use with a knockout punch tool having a movable piston, includes a connector attachable to the movable piston, a draw stud, and a quick connect mechanism. The quick connect mechanism includes mating first and second thread segments on the connector and the draw stud, respectively. The connector and the draw stud are movable between a first relative orientation where the mating first and second thread segments are misaligned to permit axial movement between the connector and the draw stud, and a second relative orientation where the mating first and second thread segments are aligned and engaged to inhibit axial movement between the connector and the draw stud.Type: ApplicationFiled: July 14, 2016Publication date: January 19, 2017Inventors: James O. Myrhum, JR., Sean T. Kehoe
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Publication number: 20160303755Abstract: A hand-held knockout punch driver includes a housing, a motor positioned within the housing, and a head unit removably coupled to the housing. The head unit includes a draw rod to which at least one of a punch or a die is attachable.Type: ApplicationFiled: June 21, 2016Publication date: October 20, 2016Inventors: James O. Myrhum, JR., Troy C. Thorson, Koon For Chung
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Patent number: 9393711Abstract: A hand-held knockout punch driver for use with a punch and a die. The hand-held knockout punch driver having a body with a handle portion and a contact surface, a motor positioned within the body, a draw stud moveable with respect to the body, and a magnetic coupling member configured to releaseably couple the die to the contact surface of the body.Type: GrantFiled: April 11, 2012Date of Patent: July 19, 2016Assignee: MILWAUKEE ELECTRIC TOOL CORPORATIONInventors: James O. Myrhum, Jr., Troy C. Thorson, Koon For Chung
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Publication number: 20160039108Abstract: A hand-held knockout driver includes a main housing having a handle portion, a motor positioned within the main housing, a hydraulic assembly driven by the motor and including a reservoir containing hydraulic fluid, a secondary housing coupled to the main housing and defining a bore therein, a working piston moveable within the bore between a rest position and an actuated position, and a work zone defined between the secondary housing and the working piston into which pressurized hydraulic fluid discharged from the hydraulic assembly is received. One unit of fluid is added to the work zone to move the working piston from the rest position to the actuated position. The reservoir has a fill capacity no greater than about 1.5 units of fluid.Type: ApplicationFiled: October 23, 2015Publication date: February 11, 2016Inventors: James O. Myrhum, JR., Troy C. Thorson, Jeremy R. Ebner, Sean T. Kehoe, Joseph H. Ellice, Jeffrey S. Holly
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Patent number: 9199389Abstract: A hand-held knockout driver for use with a punch and die. The hand-held knockout driver including a housing having a handle portion, a motor positioned within the housing, the motor having a drive shaft defining a first axis, a pump assembly positioned within the housing, the pump assembly having a piston moving along a second axis, a dump valve positioned within the housing, the dump valve defining a third axis, and a working piston moveable with respect to the housing along a fourth axis. Where the second axis, the third axis, and the fourth axis are all not parallel to the first axis.Type: GrantFiled: April 11, 2012Date of Patent: December 1, 2015Assignee: Milwaukee Electric Tool CorporationInventors: James O. Myrhum, Jr., Troy C. Thorson, Jeremy R. Ebner, Sean T. Kehoe, Joseph H. Ellice, Jeffrey S. Holly
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Publication number: 20150298339Abstract: A draw stud connector, for use on a punch driver, includes a draw stud having a first end. The draw stud connector also includes a body defining an axis therethrough, the body forming a cavity having an open end, and a wedge at least partially positioned within the cavity and moveable with respect to the body both axially and radially. The wedge allows the first end of the draw stud to move axially into the cavity but does not permit axial removal of the first end of the draw stud from the cavity.Type: ApplicationFiled: June 30, 2015Publication date: October 22, 2015Inventors: Sean T. Kehoe, James O. Myrhum, JR.
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Publication number: 20150217438Abstract: A valve includes a valve body, an inlet orifice in fluid communication with a first fluid volume, an outlet aperture in fluid communication with a second fluid volume and in selective fluid communication with the inlet orifice by a first fluid flow path, an activation member axially movable relative to the valve body, and a plunger axially movable within the valve body. The plunger includes an aperture therethrough defining a second fluid flow path between the first and second fluid volumes. The valve is operable in a first mode in which fluid flow is only permitted along the first fluid flow path in response to manual actuation of the activation member. The valve is operable in a second mode in which fluid flow is only permitted along the second fluid flow path when a pressure difference between the first and second fluid volumes reaches a predetermined value.Type: ApplicationFiled: March 31, 2015Publication date: August 6, 2015Inventor: James O. Myrhum, Jr.
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Patent number: 9089986Abstract: A draw stud connector for use on a punch driver having a working piston. The draw stud connector including a draw stud having a first end, and a first member removably couplable to the working piston and defining an axis therethrough. The first member also defines a recess shaped such that the first end of the draw stud can be introduced and removed radially from the recess, but the first end cannot be removed axially from the recess.Type: GrantFiled: August 22, 2012Date of Patent: July 28, 2015Assignee: Milwaukee Electric Tool CorporationInventors: Sean T. Kehoe, James O. Myrhum, Jr.
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Patent number: 9016317Abstract: A valve for selectively fluidly communicating a first fluid volume and a second fluid volume includes a valve body, an inlet orifice in fluid communication with the first fluid volume, and an outlet aperture in fluid communication with the second fluid volume. The valve also includes an activation member axially movable relative to the valve body. The valve is operable in a first mode in which the valve opens in response to manual actuation of the activation member. The valve is operable in a second mode in which the valve opens when a pressure difference between the first and second fluid volumes reaches a predetermined value, and the valve closes when the pressure difference between the first and second fluid volumes is less than the predetermined value.Type: GrantFiled: July 31, 2013Date of Patent: April 28, 2015Assignee: Milwaukee Electric Tool CorporationInventor: James O. Myrhum, Jr.
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Publication number: 20140034159Abstract: A valve for selectively fluidly communicating a first fluid volume and a second fluid volume includes a valve body, an inlet orifice in fluid communication with the first fluid volume, and an outlet aperture in fluid communication with the second fluid volume. The valve also includes an activation member axially movable relative to the valve body. The valve is operable in a first mode in which the valve opens in response to manual actuation of the activation member. The valve is operable in a second mode in which the valve opens when a pressure difference between the first and second fluid volumes reaches a predetermined value, and the valve closes when the pressure difference between the first and second fluid volumes is less than the predetermined value.Type: ApplicationFiled: July 31, 2013Publication date: February 6, 2014Applicant: Milwaukee Electric Tool CorporationInventor: James O. Myrhum, JR.
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Publication number: 20130047813Abstract: A draw stud connector for use on a punch driver having a working piston. The draw stud connector including a draw stud having a first end, and a first member removably couplable to the working piston and defining an axis therethrough. The first member also defines a recess shaped such that the first end of the draw stud can be introduced and removed radially from the recess, but the first end cannot be removed axially from the recess.Type: ApplicationFiled: August 22, 2012Publication date: February 28, 2013Inventors: Sean T. Kehoe, James O. Myrhum, JR.
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Publication number: 20120255184Abstract: A hand-held knockout punch driver for use with a punch and a die. The hand-held knockout punch driver having a body with a handle portion and a contact surface, a motor positioned within the body, a draw stud moveable with respect to the body, and a magnetic coupling member configured to releaseably couple the die to the contact surface of the body.Type: ApplicationFiled: April 11, 2012Publication date: October 11, 2012Inventors: James O. Myrhum, JR., Troy C. Thorson, Koon For Chung
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Publication number: 20120255183Abstract: A hand-held knockout driver for use with a punch and die. The hand-held knockout driver including a housing having a handle portion, a motor positioned within the housing, the motor having a drive shaft defining a first axis, a pump assembly positioned within the housing, the pump assembly having a piston moving along a second axis, a dump valve positioned within the housing, the dump valve defining a third axis, and a working piston moveable with respect to the housing along a fourth axis.Type: ApplicationFiled: April 11, 2012Publication date: October 11, 2012Inventors: James O. Myrhum, JR., Troy C. Thorson, Jeremy R. Ebner, Sean T. Kehoe, Joseph H. Ellice, Jeffrey S. Holly
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Patent number: D736280Type: GrantFiled: April 11, 2012Date of Patent: August 11, 2015Assignee: Milwaukee Electric Tool CorporationInventors: James O. Myrhum, Jr., Joseph H. Ellice