Patents by Inventor Joel E. Sandahl

Joel E. Sandahl 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: 11289918
    Abstract: Batteries, battery systems, battery submodules, battery operational methods, battery system operational methods, battery charging methods, and battery system charging methods are described. According to one aspect, a battery includes a first battery terminal, a second battery terminal, and a plurality of submodules individually comprising a first submodule terminal, a second submodule terminal, a plurality of rechargeable cells electrically coupled between the first and second submodule terminals, and switching circuitry configured to electrically couple one of the first and second battery terminals with one of the first and second submodule terminals of one of the submodules during an engaged mode of operation of the one of the submodules and to electrically isolate the one of the first and second battery terminals from the one of the first and second submodule terminals of the one of the submodules during a disengaged mode of operation of the one of the submodules.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: March 29, 2022
    Assignee: Lithion Battery Inc.
    Inventors: Russell M. Troxel, Joel E. Sandahl
  • Publication number: 20190207394
    Abstract: Batteries, battery systems, battery submodules, battery operational methods, battery system operational methods, battery charging methods, and battery system charging methods are described. According to one aspect, a battery includes a first battery terminal, a second battery terminal, and a plurality of submodules individually comprising a first submodule terminal, a second submodule terminal, a plurality of rechargeable cells electrically coupled between the first and second submodule terminals, and switching circuitry configured to electrically couple one of the first and second battery terminals with one of the first and second submodule terminals of one of the submodules during an engaged mode of operation of the one of the submodules and to electrically isolate the one of the first and second battery terminals from the one of the first and second submodule terminals of the one of the submodules during a disengaged mode of operation of the one of the submodules.
    Type: Application
    Filed: March 11, 2019
    Publication date: July 4, 2019
    Applicant: Lithium Werks Technology BV
    Inventors: Russell M. Troxel, Joel E. Sandahl
  • Patent number: 10230246
    Abstract: Batteries, battery systems, battery submodules, battery operational methods, battery system operational methods, battery charging methods, and battery system charging methods are described. According to one aspect, a battery includes a first battery terminal, a second battery terminal, and a plurality of submodules individually comprising a first submodule terminal, a second submodule terminal, a plurality of rechargeable cells electrically coupled between the first and second submodule-terminals, and switching circuitry configured to electrically couple one of the first and second battery terminals with one of the first and second submodule terminals of one of the submodules during an engaged mode of operation of the one of the submodules and to electrically isolate the one of the first and second battery terminals from the one of the first and second submodule terminals of the one of the submodules during a disengaged mode of operation of the one of the submodules.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: March 12, 2019
    Assignee: Lithium Werks Technology BV
    Inventors: Russell M. Troxel, Joel E. Sandahl
  • Publication number: 20160079779
    Abstract: Batteries, battery systems, battery submodules, battery operational methods, battery system operational methods, battery charging methods, and battery system charging methods are described. According to one aspect, a battery includes a first battery terminal, a second battery terminal, and a plurality of submodules individually comprising a first submodule terminal, a second submodule terminal, a plurality of rechargeable cells electrically coupled between the first and second submodule-terminals, and switching circuitry configured to electrically couple one of the first and second battery terminals with one of the first and second submodule terminals of one of the submodules during an engaged mode of operation of the one of the submodules and to electrically isolate the one of the first and second battery terminals from the one of the first and second submodule terminals of the one of the submodules during a disengaged mode of operation of the one of the submodules.
    Type: Application
    Filed: November 24, 2015
    Publication date: March 17, 2016
    Applicant: Valence Technology, Inc.
    Inventors: Russell M. Troxel, Joel E. Sandahl
  • Patent number: 8884585
    Abstract: Batteries, battery systems, battery submodules, battery operational methods, battery system operational methods, battery charging methods, and battery system charging methods are described. According to one aspect, a battery includes a first battery terminal, a second battery terminal, and a plurality of submodules individually comprising a first submodule terminal, a second submodule terminal, a plurality of rechargeable cells electrically coupled between the first and second submodule terminals, and switching circuitry configured to electrically couple one of the first and second battery terminals with one of the first and second submodule terminals of one of the submodules during an engaged mode of operation of the one of the submodules and to electrically isolate the one of the first and second battery terminals from the one of the first and second submodule terminals of the one of the submodules during a disengaged mode of operation of the one of the submodules.
    Type: Grant
    Filed: April 8, 2010
    Date of Patent: November 11, 2014
    Assignee: Valence Technology, Inc.
    Inventors: Russell M. Troxel, Joel E. Sandahl
  • Patent number: 8823323
    Abstract: Batteries, battery systems, battery submodules, battery operational methods, battery system operational methods, battery charging methods, and battery system charging methods are described. According to one aspect, a battery includes a first battery terminal, a second battery terminal, and a plurality of submodules individually comprising a first submodule terminal, a second submodule terminal, a plurality of rechargeable cells electrically coupled between the first and second submodule—terminals, and switching circuitry configured to electrically couple one of the first and second battery terminals with one of the first and second submodule terminals of one of the submodules during an engaged mode of operation of the one of the submodules and to electrically isolate the one of the first and second battery terminals from the one of the first and second submodule terminals of the one of the submodules during a disengaged mode of operation of the one of the submodules.
    Type: Grant
    Filed: April 8, 2010
    Date of Patent: September 2, 2014
    Assignee: Valence Technology, Inc.
    Inventors: Russell M. Troxel, Joel E. Sandahl
  • Publication number: 20110095725
    Abstract: Batteries, battery systems, battery submodules, battery operational methods, battery system operational methods, battery charging methods, and battery system charging methods are described. According to one aspect, a battery includes a first battery terminal, a second battery terminal, and a plurality of submodules individually comprising a first submodule terminal, a second submodule terminal, a plurality of rechargeable cells electrically coupled between the first and second submodule terminals, and switching circuitry configured to electrically couple one of the first and second battery terminals with one of the first and second submodule terminals of one of the submodules during an engaged mode of operation of the one of the submodules and to electrically isolate the one of the first and second battery terminals from the one of the first and second submodule terminals of the one of the submodules during a disengaged mode of operation of the one of the submodules.
    Type: Application
    Filed: April 8, 2010
    Publication date: April 28, 2011
    Inventors: Russell Troxel, Joel E. Sandahl
  • Publication number: 20020049049
    Abstract: A system for delivering information services is provided having a service provider capable of sending directory messages and information service messages to wireless messaging devices through one or more regional transmission systems. The directory messages define a directory of information service which may be organized in categories and subcategories. In response to receiving directory messages, each messaging device builds or updates a directory profile in its memory. The service provider sends information service messages to messaging devices for information services under the directory. The directory and information services messages are sent on the same radio signaling address, and each messaging device is programmed to receive directory and information service messages on that radio signaling address. The user of each messaging device can enable or disable different information services at the device without interaction with the service provider.
    Type: Application
    Filed: September 21, 2001
    Publication date: April 25, 2002
    Inventors: Joel E. Sandahl, Ransom W. Stephens, Thomas F. Mezger
  • Patent number: 6098098
    Abstract: A system for managing the configuration of multiple computer devices over a network is provided in which each of the computer devices has memory for storing local configuration information and is configurable in accordance with its stored local configuration information. A file server in the system is connectable to each of the computer devices via the network. The file server has memory storing master configuration information for each of the computer devices. Each of the computer devices periodically connects via the network to the file server to provide a connected computer device. The connected computer device compares data characterizing its master configuration information at the file server with data characterizing its local configuration information to determine if its master and local configuration information are different.
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: August 1, 2000
    Assignee: Enhanced Messaging Systems, Inc.
    Inventors: Joel E. Sandahl, Lyle D. Baker
  • Patent number: 6097944
    Abstract: A system for linking transmissions from multiple wireless transmission sites over a wide area by centrally controlling the batching of transmissions at the sites. The transmission sites are grouped into one or more zones. The system includes a controller (control point equipment) for receiving data representing transmission requests and associating each request with a unique serial number, and for sending transmissions having control information to sites in one or more zones by addressing each of the transmissions with one of a plurality of zone addresses in which each zone address defines one or more zones. For each zone, the controller stores the transmission requests in a master database, with their associated serial number, which are pending for the zone.
    Type: Grant
    Filed: June 2, 1998
    Date of Patent: August 1, 2000
    Assignee: Enhanced Messaging Systems, Inc.
    Inventor: Joel E. Sandahl
  • Patent number: 5689808
    Abstract: Apparatus for effecting simulcast data broadcasting includes a source of information, a network control unit, and a plurality of transmitters. The network control unit includes a high-stability timebase which is coupled to the source of information to produce a signal clocked from the high-stability timebase and containing data and digital identifying information. Each of the plurality of transmitters is coupled to the network control unit to receive the signal, and each has a modulation-generating timebase. Each modulation-generating timebase is phase locked to the high-stability timebase by way of synchronization information included in the signal, and each is adjusted by a corresponding correction value provided by the network control unit, thereby providing a highly accurate coincident modulation of the plurality of transmitters during a radio broadcast containing the signal.
    Type: Grant
    Filed: March 10, 1994
    Date of Patent: November 18, 1997
    Assignee: Motorola, Inc.
    Inventors: Joel E. Sandahl, Scott A. McFarland, John F. Nagel
  • Patent number: 4525685
    Abstract: A disciplined oscillator system having a standard oscillator which is automatically corrected for both frequency errors and time error accumulation to a constant frequency signal which is derived from the WWVB carrier frequency and the WWVB TIME CODE to maintain overall frequency accuracy within one part in 10.sup.9 notwithstanding oscillator aging and in spite of jitter and distortion due to propagation delays and noise which may cause loss of, or time jitter in, the WWVB signals. Frequency errors are detected through the use of a counter (24) having a measurement accuracy greater than one part in 10.sup.10. An error detector (26) derives correction signals by averaging a plurality of frequency variances obtained in successive measurement cycles.
    Type: Grant
    Filed: May 31, 1983
    Date of Patent: June 25, 1985
    Assignee: Spectracom Corp.
    Inventors: Robert J. Hesselberth, Thomas P. Donaher, Joel E. Sandahl
  • Patent number: 4055730
    Abstract: A circuit for detecting dial pulses at a receiving telephone transmitted from a sending telephone after the telephones are interconnected. Detecting circuits, including bandpass filters and summing and threshold circuits transmit a probable pulse signal. A probable pulse signal indicates that the signals on the telephone line have the characteristics present whenever the dialing mechanism at the sending telephone is actuated. A digital correlation circuit receives all the probable pulse signals and advances a counter which stores the number representing the dialed digit if a correlation exists.
    Type: Grant
    Filed: May 29, 1975
    Date of Patent: October 25, 1977
    Assignee: Comex Systems, Inc.
    Inventors: Gary N. Stapleford, Joel E. Sandahl