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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Publication number: 20230313786Abstract: Embodiments of the invention provide a pump assembly for a hydraulic tool. The pump assembly can include a reciprocating element that is configured to move between a retracted position and an extended position, a cam surface in the reciprocating element that can engage cam followers, a rotating element that can receive rotational input, and a base that can at least partially surrounds the rotating element. Movement of the cam followers along the cam surface can move the reciprocating element from the retracted position to the extended position.Type: ApplicationFiled: June 8, 2023Publication date: October 5, 2023Inventor: James O. Myrhum, JR.
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Patent number: 11766800Abstract: An apparatus for creating holes in a workpiece includes a knockout punch tool having a movable piston. The apparatus also includes a draw stud assembly having a connector attachable to the movable piston, a draw stud, and a quick connect mechanism including 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: GrantFiled: December 23, 2019Date of Patent: September 26, 2023Assignee: MILWAUKEE ELECTRIC TOOL CORPORATIONInventors: James O. Myrhum, Jr., Sean T. Kehoe
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Patent number: 11717876Abstract: A swage mechanism operable to expand an inner diameter of tubing including a housing defining a longitudinal axis, and a plurality of jaws coupled to the housing and movable radially outward relative to the longitudinal axis for selectively gripping an interior of the tubing. The jaws each include a first cam surface. The swage mechanism further includes a ram having a cylindrical portion and a frusto-conical head portion, and an arbor that is coupled to the housing and having a second cam surface. The frusto-conical head portion of the ram is insertable into the tubing to expand the inner diameter of the tubing. The second cam surface of the arbor is engageable with the first cam surface of each of the jaws to move the jaws toward or away from the longitudinal axis, wherein the second cam surface moves in a direction along the longitudinal axis.Type: GrantFiled: February 3, 2021Date of Patent: August 8, 2023Assignee: MILWAUKEE ELECTRIC TOOL CORPORATIONInventors: James O. Myrhum, Jr., Noah Z. Fang
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Patent number: 11708821Abstract: Embodiments of the invention provide a pump assembly for a hydraulic tool. The pump assembly can include a reciprocating element that is configured to move between a retracted position and an extended position, a cam surface in the reciprocating element that can engage cam followers, a rotating element that can receive rotational input, and a base that can at least partially surrounds the rotating element. Movement of the cam followers along the cam surface can move the reciprocating element from the retracted position to the extended position.Type: GrantFiled: July 18, 2022Date of Patent: July 25, 2023Assignee: Milwaukee Electric Tool CorporationInventor: James O. Myrhum, Jr.
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Patent number: 11701789Abstract: A hand-held knockout punch driver includes a housing, a motor positioned within the housing, a head unit removably coupled to the housing, the head unit including a body, an input member movable relative to the body, and a draw rod to which at least one of a punch or a die is attachable. The draw rod is configured to move axially relative to the body in response to movement of the input member relative to the body. A quick-release mechanism removably couples the body to the housing and includes radially inward-extending locking members on one of the housing or the head unit and a plurality of radially outward-extending locking members on the other of the housing or the head unit engageable with the radially inward-extending locking members to lock the head unit to the housing.Type: GrantFiled: June 14, 2021Date of Patent: July 18, 2023Assignee: MILWAUKEE ELECTRIC TOOL CORPORATIONInventors: James O. Myrhum, Jr., Troy C. Thorson, Koon For Chung
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Publication number: 20230191582Abstract: Embodiments of the invention provide a ram assembly for a hydraulic tool. The ram assembly includes a ram piston having a ram cavity. The ram piston receives a hydraulic pressure reaction force. The ram assembly further includes an overload assembly disposed in the ram cavity or in a cavity defined by a manifold. The overload assembly includes a burst disc positioned at a first end of the ram cavity or manifold, a lock nut positioned at a second end of the ram cavity or manifold, and a spacer positioned between the burst disc and the lock nut. The spacer transfers a supporting force applied to the lock nut to the burst disc. The hydraulic pressure reaction force and the supporting force both act in the same direction, and thus, are additive forces acting on the burst disk.Type: ApplicationFiled: August 28, 2020Publication date: June 22, 2023Inventors: James G. Ballard, James O. Myrhum, Jr.
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Publication number: 20220349393Abstract: Embodiments of the invention provide a pump assembly for a hydraulic tool. The pump assembly can include a reciprocating element that is configured to move between a retracted position and an extended position, a cam surface in the reciprocating element that can engage cam followers, a rotating element that can receive rotational input, and a base that can at least partially surrounds the rotating element. Movement of the cam followers along the cam surface can move the reciprocating element from the retracted position to the extended position.Type: ApplicationFiled: July 18, 2022Publication date: November 3, 2022Inventor: James O. Myrhum, JR.
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Patent number: 11421665Abstract: Embodiments of the invention provide a pump assembly for a hydraulic tool. The pump assembly can include a reciprocating element that is configured to move between a retracted position and an extended position, a cam surface in the reciprocating element that can engage cam followers, a rotating element that can receive rotational input, and a base that can at least partially surrounds the rotating element. Movement of the cam followers along the cam surface can move the reciprocating element from the retracted position to the extended position.Type: GrantFiled: July 17, 2020Date of Patent: August 23, 2022Assignee: Milwaukee Electric Tool CorporationInventor: James O. Myrhum, Jr.
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Publication number: 20220032486Abstract: A hand-held knockout driver includes a main housing having a handle portion, a motor positioned within the main housing, a pump assembly driven by the motor, and a secondary housing coupled to the main housing and defining a bore therein. The hand-held knockout driver also includes a working piston moveable within the bore from a rest position to an actuated position to define a piston throw distance therebetween. The hand-held knockout driver also includes a draw stud coupled to the working piston, a die coupled to the secondary housing, and a punch coupled to the draw stud opposite the working piston for movement therewith relative to the die. The die has a depth greater than the piston throw distance.Type: ApplicationFiled: October 19, 2021Publication date: February 3, 2022Inventors: 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: 11148312Abstract: A hand-held knockout driver includes a main housing having a handle portion, a motor positioned within the main housing, a pump assembly driven by the motor, and a secondary housing coupled to the main housing and defining a bore therein. The hand-held knockout driver also includes a working piston moveable within the bore from a rest position to an actuated position to define a piston throw distance therebetween. The hand-held knockout driver also includes a draw stud coupled to the working piston, a die coupled to the secondary housing, and a punch coupled to the draw stud opposite the working piston for movement therewith relative to the die. The die has a depth greater than the piston throw distance.Type: GrantFiled: January 22, 2019Date of Patent: October 19, 2021Assignee: 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: 20210299902Abstract: A hand-held knockout punch driver includes a housing, a motor positioned within the housing, a head unit removably coupled to the housing, the head unit including a body, an input member movable relative to the body, and a draw rod to which at least one of a punch or a die is attachable. The draw rod is configured to move axially relative to the body in response to movement of the input member relative to the body. A quick-release mechanism removably couples the body to the housing and includes radially inward-extending locking members on one of the housing or the head unit and a plurality of radially outward-extending locking members on the other of the housing or the head unit engageable with the radially inward-extending locking members to lock the head unit to the housing.Type: ApplicationFiled: June 14, 2021Publication date: September 30, 2021Inventors: James O. Myrhum, JR., Troy C. Thorson, Koon For Chung
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Patent number: 11034047Abstract: A hand-held knockout punch driver includes a housing, a motor, a drive assembly with an output member movable relative to the housing, and a head unit removably coupled to the housing. The head unit includes a body, an input member movable relative to the body, and a draw rod to which a punch or a die is attachable. The draw rod is configured to move axially relative to the body in response to movement of the input member relative to the body. The knockout punch driver also includes a quick-release mechanism to removably couple the body to the housing. The output member is configured to engage the input member such that the input member moves relative to the body in response to movement of the output member relative to the housing, and the body engages the quick release mechanism separately from engagement between the output member and the input member.Type: GrantFiled: March 29, 2019Date of Patent: June 15, 2021Assignee: Milwaukee Electric Tool CorporationInventors: James O. Myrhum, Jr., Troy C. Thorson, Koon For Chung
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Publication number: 20210154725Abstract: A swage mechanism operable to expand an inner diameter of tubing including a housing defining a longitudinal axis, and a plurality of jaws coupled to the housing and movable radially outward relative to the longitudinal axis for selectively gripping an interior of the tubing. The jaws each include a first cam surface. The swage mechanism further includes a ram having a cylindrical portion and a frusto-conical head portion, and an arbor that is coupled to the housing and having a second cam surface. The frusto-conical head portion of the ram is insertable into the tubing to expand the inner diameter of the tubing. The second cam surface of the arbor is engageable with the first cam surface of each of the jaws to move the jaws toward or away from the longitudinal axis, wherein the second cam surface moves in a direction along the longitudinal axis.Type: ApplicationFiled: February 3, 2021Publication date: May 27, 2021Inventors: James O. Myrhum, JR., Noah Z. Fang
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Patent number: 10940521Abstract: 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: GrantFiled: June 11, 2018Date of Patent: March 9, 2021Assignee: Milwaukee Electric Tool CorporationInventors: James O. Myrhum, Jr., Noah Z. Fang
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Publication number: 20210017968Abstract: Embodiments of the invention provide a pump assembly for a hydraulic tool. The pump assembly can include a reciprocating element that is configured to move between a retracted position and an extended position, a cam surface in the reciprocating element that can engage cam followers, a rotating element that can receive rotational input, and a base that can at least partially surrounds the rotating element. Movement of the cam followers along the cam surface can move the reciprocating element from the retracted position to the extended position.Type: ApplicationFiled: July 17, 2020Publication date: January 21, 2021Inventor: James O. Myrhum, JR.
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Publication number: 20200198167Abstract: An apparatus for creating holes in a workpiece includes a knockout punch tool having a movable piston. The apparatus also includes a draw stud assembly having a connector attachable to the movable piston, a draw stud, and a quick connect mechanism including 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: December 23, 2019Publication date: June 25, 2020Inventors: James O. Myrhum, JR., Sean T. Kehoe
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Patent number: 10549445Abstract: 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: GrantFiled: July 14, 2016Date of Patent: February 4, 2020Assignee: MILWAUKEE ELECTRIC TOOL CORPORATIONInventors: James O. Myrhum, Jr., Sean T. Kehoe
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Publication number: 20190224879Abstract: A hand-held knockout punch driver includes a housing, a motor, a drive assembly with an output member movable relative to the housing, and a head unit removably coupled to the housing. The head unit includes a body, an input member movable relative to the body, and a draw rod to which a punch or a die is attachable. The draw rod is configured to move axially relative to the body in response to movement of the input member relative to the body. The knockout punch driver also includes a quick-release mechanism to removably couple the body to the housing. The output member is configured to engage the input member such that the input member moves relative to the body in response to movement of the output member relative to the housing, and the body engages the quick release mechanism separately from engagement between the output member and the input member.Type: ApplicationFiled: March 29, 2019Publication date: July 25, 2019Inventors: James O. Myrhum, JR., Troy C. Thorson, Koon For Chung
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Publication number: 20190152083Abstract: A hand-held knockout driver includes a main housing having a handle portion, a motor positioned within the main housing, a pump assembly driven by the motor, and a secondary housing coupled to the main housing and defining a bore therein. The hand-held knockout driver also includes a working piston moveable within the bore from a rest position to an actuated position to define a piston throw distance therebetween. The hand-held knockout driver also includes a draw stud coupled to the working piston, a die coupled to the secondary housing, and a punch coupled to the draw stud opposite the working piston for movement therewith relative to the die. The die has a depth greater than the piston throw distance.Type: ApplicationFiled: January 22, 2019Publication date: May 23, 2019Inventors: 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: 10252438Abstract: 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: GrantFiled: June 21, 2016Date of Patent: April 9, 2019Assignee: MILWAUKEE ELECTRIC TOOL CORPORATIONInventors: James O. Myrhum, Jr., Troy C. Thorson, Koon For Chung