Patents by Inventor Douglas C. Marks

Douglas C. Marks 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: 7746465
    Abstract: The sample holder includes support having a thickness and an aperture through the thickness of the support. A tilt mechanism is connected to the support for controlled tilting of the support, and the aperture through the support is configured to have a diameter that increases in a direction through the thickness of the support. This arrangement enables a light beam to pass through the same given area of the sample, irrespective of whether the sample is held perpendicular to the beam or held at a tilted position relative to the beam. In one embodiment, the holder includes an efficient magnetic clamp mechanism for securing the sample to the holder. The holder compactly integrates with tilting mechanisms a sample rotation mechanism.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: June 29, 2010
    Assignee: Hinds Instruments, Inc.
    Inventor: Douglas C. Mark
  • Patent number: 7696448
    Abstract: The closing protection mechanism provided herein includes a control unit, a sensing switch and a sensing switch actuator. The control unit is coupled to, and in electronic communication with, the trip device. The control unit is structured to receive a sensing switch signal and to provide a control signal to the trip device. The sensing switch coupled to, and in electronic communication with, the control unit. The sensing switch is disposed adjacent to the toggle assembly. The sensing switch is structured to provide a sensing switch signal to the control unit. The sensing switch actuator is disposed on the toggle assembly. The sensing switch actuator is structured to actuate the sensing switch. The sensing switch is structured to be actuated by the sensing switch actuator when the toggle assembly is in the second, over-toggle configuration.
    Type: Grant
    Filed: June 8, 2007
    Date of Patent: April 13, 2010
    Assignee: Eaton Corporation
    Inventors: Paul R. Rakus, Andrew L. Gottschalk, Nathan J. Weister, Joseph J. Matsko, Robert M. Slepian, Douglas C. Marks
  • Patent number: 7687733
    Abstract: The stored energy device interlock assembly provided is structured to prevent the closing assembly and/or the latch assembly from being actuated in selected configurations. The interlock assembly includes a latch D-shaft link assembly, an on-command paddle assembly, and an on-command paddle actuator. The latch D-shaft link assembly is pivotally coupled to, and structured to rotate, the latch assembly D-shaft. The on-command paddle assembly is structured to move the D-shaft link assembly. The on-command paddle actuator is structured to move the on-command paddle assembly. The interlock assembly is structured to disengage the latch assembly D-shaft from the on-command paddle assembly in selected configurations of the electrical switching apparatus. The interlock assembly provided herein has two pivotal degrees of freedom as opposed to a pivotal degree of freedom and a sliding degree of freedom.
    Type: Grant
    Filed: June 6, 2007
    Date of Patent: March 30, 2010
    Assignee: Eaton Corporation
    Inventors: Nathan J. Weister, Paul R. Rakus, Roger J. Briggs, Perry R. Gibson, Robert M. Slepian, Douglas C. Marks, Yuri C. Spitsberg
  • Patent number: 7646270
    Abstract: A spring assembly is provided for a yoke assembly of an electrical switching apparatus including a housing, separable contacts enclosed by the housing, and an operating mechanism structured to open and close the separable contacts. The operating mechanism includes a pole shaft. The yoke assembly is coupled to the pole shaft and is movable among first and second positions corresponding to the separable contacts being closed and open, respectively. The spring assembly includes a number of first springs having a first spring rate and being coupled to the yoke assembly, and a number of second springs having a second spring rate and being coupled to the yoke assembly. The second spring rate is different than the first spring rate. The number of first springs and the number of second springs bias the yoke assembly toward the second position.
    Type: Grant
    Filed: May 4, 2007
    Date of Patent: January 12, 2010
    Assignee: Eaton Corporation
    Inventors: Yuri Spitsberg, Robert M. Slepian, Perry R. Gibson, David A. Parks, Douglas C. Marks, Paul R. Rakus, Nathan J. Weister, Henry A. Wehrli, III
  • Patent number: 7598467
    Abstract: The present invention provides for an electrical switching apparatus operating mechanism opening assembly wherein the toggle assembly stop/kicker pin has been separated into a kicker pin and a stop pin. By separating the functions of the stop/kicker pin into separate pins, the kicker pin may now be located at the pivot point of the associated link. Further, the kicker pin and the stop pin are now disposed upon a cradle assembly as opposed to an elongated link. The cradle assembly further supports one of the toggle assembly links. Thus, rotation of the cradle assembly causes the toggle assembly to move. The operating mechanism opening assembly is configured so that, when an associated latch assembly latch plate assembly is released, the cradle assembly rotates so that the toggle assembly is moved away from a closing assembly closing device.
    Type: Grant
    Filed: May 4, 2007
    Date of Patent: October 6, 2009
    Assignee: Eaton Corporation
    Inventors: Perry R. Gibson, Douglas C. Marks, Paul R. Rakus, Robert M. Slepian, David M. Olszewski
  • Patent number: 7474179
    Abstract: A contact spring assembly is provided for an electrical switching apparatus including a movable contact assembly and a stationary contact assembly having stationary electrical contacts. The movable contact assembly includes a carrier assembly, and movable contact arms pivotably coupled to the carrier assembly and carrying movable electrical contacts. The contact spring assembly includes a first contact spring housing member, a second contact spring housing member coupled to and disposed opposite from the first contact spring housing member, a spring guide disposed between and coupled to at least one of the first and second contact spring housing members and including spring holes, springs received in the spring holes, and sliders coupled to the springs. The springs and sliders individually bias the movable contact arms and movable electrical contacts toward engagement with corresponding stationary electrical contacts. A movable contact assembly and an electrical switching apparatus are also disclosed.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: January 6, 2009
    Assignee: Eaton Corportion
    Inventors: Nathan J. Weister, William C. Pollitt, John J. Shea, Douglas C. Marks
  • Publication number: 20080302640
    Abstract: The stored energy device interlock assembly provided is structured to prevent the closing assembly and/or the latch assembly from being actuated in selected configurations. The interlock assembly includes a latch D-shaft link assembly, an on-command paddle assembly, and an on-command paddle actuator. The latch D-shaft link assembly is pivotally coupled to, and structured to rotate, the latch assembly D-shaft. The on-command paddle assembly is structured to move the D-shaft link assembly. The on-command paddle actuator is structured to move the on-command paddle assembly. The interlock assembly is structured to disengage the latch assembly D-shaft from the on-command paddle assembly in selected configurations of the electrical switching apparatus. The interlock assembly provided herein has two pivotal degrees of freedom as opposed to a pivotal degree of freedom and a sliding degree of freedom.
    Type: Application
    Filed: June 6, 2007
    Publication date: December 11, 2008
    Inventors: NATHAN J. WEISTER, Paul R. Rakus, Roger J. Briggs, Perry R. Gibson, Robert M. Slepian, Douglas C. Marks, Yuri C. Spitsberg
  • Publication number: 20080302645
    Abstract: The closing protection mechanism provided herein includes a control unit, a sensing switch and a sensing switch actuator. The control unit is coupled to, and in electronic communication with, the trip device. The control unit is structured to receive a sensing switch signal and to provide a control signal to the trip device. The sensing switch coupled to, and in electronic communication with, the control unit. The sensing switch is disposed adjacent to the toggle assembly. The sensing switch is structured to provide a sensing switch signal to the control unit. The sensing switch actuator is disposed on the toggle assembly. The sensing switch actuator is structured to actuate the sensing switch. The sensing switch is structured to be actuated by the sensing switch actuator when the toggle assembly is in the second, over-toggle configuration.
    Type: Application
    Filed: June 8, 2007
    Publication date: December 11, 2008
    Inventors: PAUL R. RAKUS, Andrew L. Gottschalk, Nathan J. Weister, Joseph J. Matsko, Robert M. Slepian, Douglas C. Marks
  • Patent number: 7459650
    Abstract: A latch engagement control mechanism is provided for a latch assembly of a circuit breaker including a housing, separable contacts, and an operating mechanism having a pole shaft, and at least one link coupled to the pole shaft. The latch assembly includes a pivot member cooperable with such link. The latch engagement control mechanism includes a latch pin having a cut-out portion and pivoting among a first position in which the latch pin prevents the pivot member from pivoting, and a second position in which the cut-out portion provides a clearance for the pivot member to pivot. A latch member coupled to the latch pin at or about the cut-out portion, includes at least a first protrusion engageable by the pivot member to establish the first position of the latch pin.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: December 2, 2008
    Assignee: Eaton Corporation
    Inventors: Nathan J. Weister, Paul R. Rakus, Douglas C. Marks
  • Patent number: 7449652
    Abstract: A catchment mechanism for an electrical switching apparatus operating mechanism is provided. The catchment mechanism includes a catchment wheel with a radially extending surface, a catchment prop, and a catchment prop reset pin. The catchment wheel rotates with the cam in the closing assembly as the closing springs are being charged. During the charging of the springs, the catchment prop stop edge travels over, but preferably does not engage, the wheel outer surface. When the closing springs are released, the catchment prop stop edge engages the catchment wheel radially extending surface thus causing the catchment wheel to stop rotating. As the catchment wheel is fixed to the cam shaft, the rotation of the cam shaft, and therefore the cam, is also stopped. The catchment wheel radially extending surface is positioned so that the cam is stopped in an appropriate position to begin recharging the closing spring.
    Type: Grant
    Filed: June 6, 2007
    Date of Patent: November 11, 2008
    Assignee: Eaton Corporation
    Inventors: Paul R. Rakus, Perry R. Gibson, Andrew L. Gottschalk, Douglas C. Marks, Robert M. Slepian
  • Patent number: 7449653
    Abstract: A latch assembly for an electrical switching apparatus operating mechanism is provided. The latch assembly is structured so that force from the closing spring is directed along a line extending through the pivot point of a latch prop. A reset assembly for the latch prop is also provided.
    Type: Grant
    Filed: June 7, 2007
    Date of Patent: November 11, 2008
    Assignee: Eaton Corporation
    Inventors: Perry R. Gibson, Paul R. Rakus, Douglas C. Marks, Andrew L. Gottschalk, Robert M. Slepian, Roger J. Briggs
  • Publication number: 20080271982
    Abstract: The present invention provides for an electrical switching apparatus operating mechanism opening assembly wherein the toggle assembly stop/kicker pin has been separated into a kicker pin and a stop pin. By separating the functions of the stop/kicker pin into separate pins, the kicker pin may now be located at the pivot point of the associated link. Further, the kicker pin and the stop pin are now disposed upon a cradle assembly as opposed to an elongated link. The cradle assembly further supports one of the toggle assembly links. Thus, rotation of the cradle assembly causes the toggle assembly to move. The operating mechanism opening assembly is configured so that, when an associated latch assembly latch plate assembly is released, the cradle assembly rotates so that the toggle assembly is moved away from a closing assembly closing device.
    Type: Application
    Filed: May 4, 2007
    Publication date: November 6, 2008
    Inventors: PERRY R. GIBSON, Douglas C. Marks, Paul R. Rakus, Robert M. Slepian, David M. Olszewski
  • Publication number: 20080271981
    Abstract: A spring assembly is provided for a yoke assembly of an electrical switching apparatus including a housing, separable contacts enclosed by the housing, and an operating mechanism structured to open and close the separable contacts. The operating mechanism includes a pole shaft. The yoke assembly is coupled to the pole shaft and is movable among first and second positions corresponding to the separable contacts being closed and open, respectively. The spring assembly includes a number of first springs having a first spring rate and being coupled to the yoke assembly, and a number of second springs having a second spring rate and being coupled to the yoke assembly. The second spring rate is different than the first spring rate. The number of first springs and the number of second springs bias the yoke assembly toward the second position.
    Type: Application
    Filed: May 4, 2007
    Publication date: November 6, 2008
    Inventors: Yuri Spitsberg, Robert M. Slepian, Perry R. Gibson, David A. Parks, Douglas C. Marks, Paul R. Rakus, Nathan J. Weister, Henry A. Wehrli
  • Publication number: 20080257702
    Abstract: A latch engagement control mechanism is provided for a latch assembly of a circuit breaker including a housing, separable contacts, and an operating mechanism having a pole shaft, and at least one link coupled to the pole shaft. The latch assembly includes a pivot member cooperable with such link. The latch engagement control mechanism includes a latch pin having a cut-out portion and pivoting among a first position in which the latch pin prevents the pivot member from pivoting, and a second position in which the cut-out portion provides a clearance for the pivot member to pivot. A latch member coupled to the latch pin at or about the cut-out portion, includes at least a first protrusion engageable by the pivot member to establish the first position of the latch pin.
    Type: Application
    Filed: April 19, 2007
    Publication date: October 23, 2008
    Inventors: Nathan J. Weister, Paul R. Rakus, Douglas C. Marks
  • Publication number: 20080237015
    Abstract: A catchment mechanism for an electrical switching apparatus operating mechanism is provided. The catchment mechanism includes a catchment wheel with a radially extending surface, a catchment prop, and a catchment prop reset pin. The catchment wheel rotates with the cam in the closing assembly as the closing springs are being charged. During the charging of the springs, the catchment prop stop edge travels over, but preferably does not engage, the wheel outer surface. When the closing springs are released, the catchment prop stop edge engages the catchment wheel radially extending surface thus causing the catchment wheel to stop rotating. As the catchment wheel is fixed to the cam shaft, the rotation of the cam shaft, and therefore the cam, is also stopped. The catchment wheel radially extending surface is positioned so that the cam is stopped in an appropriate position to begin recharging the closing spring.
    Type: Application
    Filed: June 6, 2007
    Publication date: October 2, 2008
    Inventors: PAUL R. RAKUS, Perry R. Gibson, Andrew L. Gottschalk, Douglas C. Marks, Robert M. Slepian
  • Publication number: 20080237016
    Abstract: A latch assembly for an electrical switching apparatus operating mechanism is provided. The latch assembly is structured so that force from the closing spring is directed along a line extending through the pivot point of a latch prop. A reset assembly for the latch prop is also provided.
    Type: Application
    Filed: June 7, 2007
    Publication date: October 2, 2008
    Inventors: Perry R. Gibson, Paul R. Rakus, Douglas C. Marks, Andrew L. Gottschalk, Robert M. Slepian, Roger J. Briggs
  • Publication number: 20080174773
    Abstract: The sample holder includes support having a thickness and an aperture through the thickness of the support. A tilt mechanism is connected to the support for controlled tilting of the support, and the aperture through the support is configured to have a diameter that increases in a direction through the thickness of the support. This arrangement enables a light beam to pass through the same given area of the sample, irrespective of whether the sample is held perpendicular to the beam or held at a tilted position relative to the beam. In one embodiment, the holder includes an efficient magnetic clamp mechanism for securing the sample to the holder. The holder compactly integrates with tilting mechanisms a sample rotation mechanism.
    Type: Application
    Filed: December 28, 2007
    Publication date: July 24, 2008
    Applicant: HINDS INSTRUMENTS INC.
    Inventor: Douglas C. Mark
  • Publication number: 20080088394
    Abstract: A contact spring assembly is provided for an electrical switching apparatus including a movable contact assembly and a stationary contact assembly having stationary electrical contacts. The movable contact assembly includes a carrier assembly, and movable contact arms pivotably coupled to the carrier assembly and carrying movable electrical contacts. The contact spring assembly includes a first contact spring housing member, a second contact spring housing member coupled to and disposed opposite from the first contact spring housing member, a spring guide disposed between and coupled to at least one of the first and second contact spring housing members and including spring holes, springs received in the spring holes, and sliders coupled to the springs. The springs and sliders individually bias the movable contact arms and movable electrical contacts toward engagement with corresponding stationary electrical contacts. A movable contact assembly and an electrical switching apparatus are also disclosed.
    Type: Application
    Filed: October 13, 2006
    Publication date: April 17, 2008
    Inventors: Nathan J. Weister, William C. Pollitt, John J. Shea, Douglas C. Marks
  • Patent number: 7268652
    Abstract: An opening assist mechanism is for the cradle assembly of a circuit breaker including a housing enclosing separable contacts, and an operating mechanism for opening and closing the separable contacts. The operating mechanism includes a trip bar and a cradle assembly. The cradle assembly includes a first toggle link, a second toggle link pivotally coupled to the first toggle link by a first pivot, and a cradle member pivotally coupled to the second toggle link by a second pivot. The cradle member includes a third pivot and a latching portion structured to engage the trip bar when the cradle assembly is disposed in a position corresponding to the separable contacts being closed or otherwise closeable. The opening assist mechanism comprises an actuator, such as a kicker pin, disposed on the cradle member and structured to engage and move at least one of the first and second toggle links in response to an actuation of the operating mechanism.
    Type: Grant
    Filed: July 7, 2005
    Date of Patent: September 11, 2007
    Inventors: Douglas C. Marks, Robert M. Slepian, David C. Turner
  • Patent number: 7145420
    Abstract: A support structure for a circuit interrupter latch member includes a first side plate having a first opening, and a second side plate having a second opening. A first hardened bushing includes a first opening and a first perimeter. The first opening of the first hardened bushing is adapted to pivotally mount a first tab of the latch member. The first perimeter is coupled to the first side plate at the first opening thereof. A second hardened bushing includes a second opening and a second perimeter. The second opening of the second hardened bushing is adapted to pivotally mount a second tab of the latch member. The second perimeter is coupled to the second side plate at the second opening thereof. The hardened material of the first and second side plates is harder than the unhardened material of the first and second side plates.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: December 5, 2006
    Assignee: Cleveland, Ohio
    Inventors: Douglas C. Marks, David A. Parks, Robert M. Slepian, Ameilia M. Stay, David E. Little