Patents Assigned to Ekstrom Industries, Inc.
  • Patent number: 6846199
    Abstract: A housing carries an electrical disconnect switch having movable contacts. A cover is mounted on the housing and has an opening allowing access to a control lever of the disconnect switch. Electrical conductors are connected to the disconnect switch within the housing and have a blade terminal portion extending exteriorly of the housing for connection to jaws carried on an electrical component mountable in an electrical watthour meter socket. Degassing ports are formed between the cover and the sidewall of the housing to allow any arcing gasses generated within the interior of the housing to escape from the housing. A handle is mounted centrally on the cover. An ejector handle is movably mounted on the cover and carries an ejector arm to separate the housing from an attached electrical component. A method of removing and remounting a watthour meter in a meter socket is provided, including sequence steps printed on the face of the housing.
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: January 25, 2005
    Assignee: Ekstrom Industries, Inc.
    Inventors: Darrell Robinson, Robert Groozen
  • Patent number: 6844825
    Abstract: A method and apparatus for detecting a tamper event in an electrical power metering apparatus having power distribution and power service conductors connected to jaw contacts in a socket housing, the jaw contacts receiving blade terminals of an electrical service meter apparatus. A tamper event signature is detected based on a time relationship between separation of the ground circuit between the electrical power metering apparatus and the socket and the separation of at least one of the power distribution and power service blade terminals from the socket jaw contacts due to removal of the electrical service apparatus from the socket.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: January 18, 2005
    Assignee: Ekstrom Industries, Inc.
    Inventor: John T. Shincovich
  • Patent number: 6823563
    Abstract: A handle adapted to be mounted on a watthour meter cover facilitates movement of the watthour meter relative to a meter socket. The handle is removably attachable to a handle receiver carried on the cover, with the handle defining a finger grip surface. The receiver is in the form of one or more recesses or projections which are engagable with complimentary portions on the handle.
    Type: Grant
    Filed: August 26, 2002
    Date of Patent: November 30, 2004
    Assignee: Ekstrom Industries, Inc.
    Inventors: Darrell Robinson, Allen V. Pruehs
  • Patent number: 6766698
    Abstract: A jaw contact tester and conditioning apparatus for measuring push-in and pull-out forces between a blade terminal and a jaw contact mounted in an electrical power service apparatus. The jaw contact tester is provided in multiple aspects providing, in one aspect, a simple go/no-go pull-out force indication, in a second aspect providing a push-in and pull-out force indication on separate scales carried on the tester and, in a third aspect, allows a force measurement gauge to be attached to the blade terminal holder for measuring blade push-in and blade pull-out forces relative to a jaw contact.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: July 27, 2004
    Assignee: Ekstrom Industries, Inc.
    Inventors: Darrell Robinson, Karl R. Loehr
  • Patent number: 6752652
    Abstract: A watthour socket adapter base carries jaw blades for receiving blade terminals on a meter device and connectable to meter socket jaw contacts. Latch member carrier by drive members on an annular ring engage a socket cover to fixedly mount the latch base to the socket cover. Barriers surround each drive member to electrically insulate the drive members from the jaw contacts. Apertures in the base are surrounded by strain relief and lock fingers to accommodate the passage of conductors throgh the base. Conformable discontinuities are formed in the annual ring of the base to conform to different diameter shells attachable to the base. In another aspect, the latch members are pivotally mounted on an outer surface of the base and movable between latching and unlatching positions by rotation of a fastener extendible through the shell and the base and engaged with the latch members.
    Type: Grant
    Filed: April 2, 2003
    Date of Patent: June 22, 2004
    Assignee: Ekstrom Industries, Inc.
    Inventor: Darrell Robinson
  • Patent number: 6739886
    Abstract: A cap mountable over an optical port support and a securing member fixedly engagable through the cap to the optical port support. The seal also includes an indicator for indicating separation of the cap from the support. In one aspect, the cap has a base mountable over the support and a plate with a hook pivotally attached to the base. In another aspect, an extension projects from one portion of the cap and includes an aperture aligned with a threaded bore in the cap. An aperture in the shaft of the fastener is alignable with the aperture in the extension to receive a seal indicator. The fastener is provided with a hardened tip for secure engagement with the optical port support. In one aspect, the legs of the fastener are thin so as to be deformable upon the application of a predetermined amount of threading torque to the fastener.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: May 25, 2004
    Assignee: Ekstrom Industries, Inc.
    Inventors: Darrell Robinson, Allen V. Pruehs
  • Patent number: 6679723
    Abstract: A cover adapted to be mounted on a watthour meter base includes a handle carried on the cover to facilitate movement of the watthour meter relative to a meter socket. The handle is generally provided as one or a pair of handles mounted on or unitarily formed with the body of the cover, the handle defining a finger grip surface. In one aspect, the handle is a pair of arms extending from the cover, with a cross piece mounted to and extending between the arms. In another aspect, an ejector handle is moveably mounted with respect to a primary handle carried on the end wall of the cover. Ejector arms coupled to the ejector handle and moveably disposed through the cover and meter base have distal ends engagable with meter mounts in the meter socket to facilitate separation of the meter from the socket upon movement of the ejector handle.
    Type: Grant
    Filed: November 14, 2001
    Date of Patent: January 20, 2004
    Assignee: Ekstrom Industries, Inc.
    Inventor: Darrell Robinson
  • Patent number: 6663422
    Abstract: A coupler for use in a watthour meter socket adapter mechanically connects a jaw contact and a blade terminal. External conductors are separately attachable to the jaw contact and the blade terminal in one aspect. In another aspect, the coupler is an electrical fuse fixed between the jaw contact and the blade terminal. In another aspect, the coupler isolates the jaw contact from the blade terminal.
    Type: Grant
    Filed: January 14, 2002
    Date of Patent: December 16, 2003
    Assignee: Ekstrom Industries, Inc.
    Inventors: Darrell Robinson, Allen V. Pruehs
  • Patent number: 6663405
    Abstract: A housing carries an electrical disconnect switch having movable contacts. A cover is mounted on the housing and has an opening allowing access to a control lever of the disconnect switch. Electrical conductors are connected to the disconnect switch within the housing and have a blade terminal portion extending exteriorly of the housing for connection to jaws carried on an electrical component mountable in an electrical watthour meter socket. Degassing ports are formed between the cover and the sidewall of the housing to allow any arcing gasses generated within the interior of the housing to escape from the housing. A handle is mounted centrally on the cover. An ejector handle is movably mounted on the cover and carries an ejector arm to separate the housing from an attached electrical component. A method of removing and remounting a watthour meter in a meter socket is provided, including sequence steps printed on the face of the housing.
    Type: Grant
    Filed: November 11, 2002
    Date of Patent: December 16, 2003
    Assignee: Ekstrom Industries, Inc.
    Inventors: Darrell Robinson, Robert Goozen
  • Patent number: 6644989
    Abstract: A light transmissive guide transmits light bidirectionally between a first end disposed interiorly of an electrical power service apparatus housing and a second end visible externally of the housing. The transmitted light by the light guide can be a status light of a device mounted within the housing or light forming part of an optical data communication signal transmitted bidirectionally between light operative and/or responsive devices mounted internally within the housing and similar devices disposed in light communication with the external end of the light guide.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: November 11, 2003
    Assignee: Ekstrom Industries, Inc.
    Inventor: Darrell Robinson
  • Patent number: 6592399
    Abstract: A support supports an auxiliary component, like a circuit board, in a non-interferingly manner with electrical contacts in a watthour meter socket adapter housing. In one aspect, access is provided through the socket adapter to an electrical component mounted on the circuit board for external control of the component through the aperture in the socket adapter. The supports also releasably receive flanges on electrical components for direct mounting of the components.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: July 15, 2003
    Assignee: Ekstrom Industries, Inc.
    Inventors: Darrell Robinson, Allen V. Pruehs
  • Patent number: 6589072
    Abstract: A support supports an auxiliary component, like a circuit board, in a non-interferingly manner with electrical contacts in a watthour meter socket adapter housing. In one aspect, slots are formed in posts and receive opposed ends of the circuit board. An end support post having an outwardly projecting, downwardly inclined top surface provides a snap connection of the circuit board to the housing.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: July 8, 2003
    Assignee: Ekstrom Industries, Inc.
    Inventors: Darrell Robinson, Allen V. Pruehs
  • Patent number: 6549388
    Abstract: An electrical service apparatus housing carries a plurality of line and load blade terminals and jaw contacts. Surge suppression elements are carried on a circuit board mountable within the housing and are connected to certain blade terminals and jaw contacts for conducting electrical surges to ground. Insulating barriers surround the jaw contacts and, also, fixedly position the circuit board in the housing. A switch element is energized when one of the surge suppression elements changes state and provides an externally transmittable signal indicative of the change in state of one of the surge suppression elements. An insulating safety shield surrounds the jaw contacts. A light transmissive guide carried on the shield has a first end disposed adjacent to a light source on the circuit board and an opposed second end visible exteriorly through the housing to provide an exteriorly visible indication of the state of the light source.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: April 15, 2003
    Assignee: Ekstrom Industries, Inc.
    Inventor: Darrell Robinson
  • Patent number: 6520798
    Abstract: A housing carries an electrical disconnect switch having movable contacts. A cover is mounted on the housing and has an opening allowing access to a control lever of the disconnect switch. Electrical conductors are connected to the disconnect switch within the housing and have a blade terminal portion extending exteriorly of the housing for connection to jaws carried on an electrical component mountable in an electrical watthour meter socket. Degassing ports are formed between the cover and the sidewall of the housing to allow any arcing gasses generated within the interior of the housing to escape from the housing. A handle is mounted centrally on the cover. An ejector handle is movably mounted on the cover and carries an ejector arm to separate the housing from an attached electrical component. A method of removing and remounting a watthour meter in a meter socket is provided, including sequence steps printed on the face of the housing.
    Type: Grant
    Filed: August 9, 2001
    Date of Patent: February 18, 2003
    Assignee: Ekstrom Industries, Inc.
    Inventors: Darrell Robinson, Robert Goozen
  • Patent number: 6488535
    Abstract: A meter socket mountable in an enclosure and receiving blade terminals of a watthour meter in electrical contact with jaws mounted in the meter socket has an open end with wire guides to allow electrical conductors connected at one end to each of the jaws in the meter socket to exit the housing of the meter socket for connection to a remotely located meter test switch. Each of the conductors may be uniquely color coded for easy connection to the appropriate meter test switch terminal. In one aspect, the meter socket includes front and rear plates which define an internal cavity for receiving the jaw contacts and the conductors. In this aspect, the wire guides are formed on one end of one of the plates for receiving an intermediate portion of at least one conductor therethrough.
    Type: Grant
    Filed: January 15, 2002
    Date of Patent: December 3, 2002
    Assignee: Ekstrom Industries, Inc.
    Inventors: Darrell Robinson, Allen V. Pruehs
  • Patent number: 6478589
    Abstract: A safety shield for an electrical service apparatus is in the form of an enclosure surrounding in the apparatus jaw contacts. Latch members formed on the shield releasibly engage apertures in the apparatus housing to mount the shield in the housing. The latch members are configured to fill the apertures in the housing to prevent disengagement of the shield from the housing during removal of a watthour meter from the housing. In one aspect, the shield is provided with wire wrap members for winding up lengths of excess cables and conductors extending from a watthour meter. The wire wrap members include a pair of arms arranged about the periphery of the shield or spaced flanges on opposite sides of the shield. The wire wrap members also include a flange having an end extending over an aperture in the shield which acts as a strain relief for a conductor extending through the shield.
    Type: Grant
    Filed: January 31, 2001
    Date of Patent: November 12, 2002
    Assignee: Ekstrom Industries, Inc.
    Inventors: Darrell Robinson, Allen V. Pruehs
  • Patent number: 6475028
    Abstract: A meter socket mountable in an enclosure and receiving blade terminals of a watthour meter in electrical contact with jaws mounted in the meter socket has an open end allowing electrical conductors connected at one end to each of the jaws in the meter socket to exit the housing of the meter socket for connection to a remotely located meter test switch. The conductors are arranged in a plurality of separate tied bundles. Each of the conductors may be uniquely color coded for easy connection to the appropriate meter test switch terminal.
    Type: Grant
    Filed: April 6, 2000
    Date of Patent: November 5, 2002
    Assignee: Ekstrom Industries, Inc.
    Inventors: Darrell Robinson, Allen V. Pruehs
  • Patent number: 6443761
    Abstract: A support receives an auxiliary component, like a circuit board, in a non-interferingly manner with electrical contacts in a watthour meter socket adapter housing. In one aspect, the support includes legs carrying conductive elements formed on the circuit board and extending through apertures in the base of the housing for electrical connection external of the socket adapter. In another aspect, a circuit board is provided with contacts along one edge which form spring jaws for receiving a terminal. A conductive tab on the circuit board resiliently completes an electrical circuit between a contact in the housing and a circuit or electrical component on the circuit board.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: September 3, 2002
    Assignee: Ekstrom Industries, Inc.
    Inventors: Darrell Robinson, Allen V. Pruehs
  • Patent number: 6428350
    Abstract: A support supports an auxiliary component, like a circuit board, in a non-interferingly manner with electrical contacts in a watthour meter socket adapter housing. In another aspect, a circuit board is provided with contacts along one edge which form spring jaws for receiving a terminal. A conductive tab on the circuit board resiliently completes an electrical circuit between a contact in the housing and a circuit or electrical component on the circuit board.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: August 6, 2002
    Assignee: Ekstrom Industries, Inc.
    Inventors: Darrell Robinson, Allen V. Pruehs
  • Patent number: 6409537
    Abstract: A support supports a circuit board in a non-interferingly manner with electrical contacts in a watthour meter socket adapter housing. In one aspect, slots are formed in posts and receive opposed ends of the circuit board. An end support post having an outwardly projecting, downwardly inclined top surface provides a snap connection of the circuit board to the housing. Alternately, the support includes legs carrying conductive elements formed on the circuit board and extending through apertures in the base of the housing for electrical connection external of the socket adapter. In another aspect, a circuit board is provided with contacts along one edge which form spring jaws for receiving a terminal. A conductive tab on the circuit board resiliently completes an electrical circuit between a contact in the housing and a circuit or electrical component on the circuit board. The supports also releasably receive flanges on electrical components for direct mounting of the components.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: June 25, 2002
    Assignee: Ekstrom Industries, Inc.
    Inventors: Darrell Robinson, Allen V. Pruehs