Patents by Inventor Darrell Long

Darrell Long 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: 11565924
    Abstract: A system for a pallet truck load wheel mechanism comprises a logic device and first and second sensor arrangements. The first and second sensor arrangements include first and second sensing fields that define first and second edges of an operability window, respectively. The logic device has an operable state indicating that the load wheel mechanism can raise a pallet lifting device and an inoperable state indicating that the load wheel mechanism should not raise the pallet lifting device. The logic device is initialized in the operable state and is configured to change to the inoperable state in response to each time the first sensor arrangement detects an edge of a board intersecting, the first edge of the operability window and to change to the operable state in response to each time the second sensor arrangement detects an edge of a board intersecting the second edge of the operability window.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: January 31, 2023
    Assignee: Hyster-Yale Group, Inc.
    Inventor: Darrell Long
  • Publication number: 20210002114
    Abstract: A system for a pallet truck load wheel mechanism comprises a logic device and first and second sensor arrangements. The first and second sensor arrangements include first and second sensing fields that define first and second edges of an operability window, respectively. The logic device has an operable state indicating that the load wheel mechanism can raise a pallet lifting device and an inoperable state indicating that the load wheel mechanism should not raise the pallet lifting device. The logic device is initialized in the operable state and is configured to change to the inoperable state in response to each time the first sensor arrangement detects an edge of a board intersecting, the first edge of the operability window and to change to the operable state in response to each time the second sensor arrangement detects an edge of a board intersecting the second edge of the operability window.
    Type: Application
    Filed: June 29, 2020
    Publication date: January 7, 2021
    Applicant: Hyster-Yale Group, Inc.
    Inventor: Darrell Long
  • Patent number: 9692656
    Abstract: A policy distribution server provides, on a subscription basis, policy updates to effect desired behaviors of network intermediary devices. The policy updates may specify caching policies, and may in some instances, include instructions for data collection by the network intermediary devices. Data collected in accordance with such instructions may be used to inform future policy updates distributed to the network intermediary devices.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: June 27, 2017
    Assignee: Symantec Corporation
    Inventors: Kevin Porter, Thomas J. Kelly, Marcin Lukasz Lizon, Darrell Long, Eric Maki, Kim Tremblay, Jennifer Vance
  • Publication number: 20160127189
    Abstract: A policy distribution server provides, on a subscription basis, policy updates to effect desired behaviors of network intermediary devices. The policy updates may specify caching policies, and may in some instances, include instructions for data collection by the network intermediary devices. Data collected in accordance with such instructions may be used to inform future policy updates distributed to the network intermediary devices.
    Type: Application
    Filed: January 8, 2016
    Publication date: May 5, 2016
    Inventors: Kevin Porter, Thomas J. Kelly, Marcin Lukasz Lizon, Darrell Long, Eric Maki, Kim Tremblay, Jennifer Vance
  • Patent number: 9237068
    Abstract: A policy distribution server provides, on a subscription basis, policy updates to effect desired behaviors of network intermediary devices. The policy updates may specify caching policies, and may in some instances, include instructions for data collection by the network intermediary devices. Data collected in accordance with such instructions may be used to inform future policy updates distributed to the network intermediary devices.
    Type: Grant
    Filed: January 30, 2011
    Date of Patent: January 12, 2016
    Assignee: Blue Coat Systems, Inc.
    Inventors: Kevin Porter, Thomas J. Kelly, Marcin Lukasz Lizon, Darrell Long, Eric Maki, Kim Tremblay, Jennifer Vance
  • Patent number: 8793307
    Abstract: A cache logically disposed in a communication path between a client and a server receives a request for a content item and, in response thereto, requests from the server header information concerning the content item and an initial portion of data that makes up the content item. The cache then computes a first hashing value from the header information and a second hashing value from the initial portion of data. A content identifier is created by combining the first hashing value and the second hashing value. Using the content identifier, the cache determines whether a copy of the content item is stored by the cache; and, if so provides same to the client. Otherwise, the cache requests the content item from the server and, upon receipt thereof, provides it to the client.
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: July 29, 2014
    Assignee: Blue Coat Systems, Inc.
    Inventors: Wei Lu, Jamshid Mahdavi, Darrell Long
  • Patent number: 8316429
    Abstract: A host computer system is categorized according to uniform resource locator (URL) information extracted from a digital certificate purportedly associated with said host. Thereafter, a secure communication session (e.g., an SSL session) with said host may be granted or denied according to results of the categorizing. If granted, messages associated with the secure session may be tunneled through a proxy without decryption, or, in some cases, even though the secure communication session was authorized messages may be decrypted at the proxy.
    Type: Grant
    Filed: January 31, 2006
    Date of Patent: November 20, 2012
    Assignee: Blue Coat Systems, Inc.
    Inventors: Darrell Long, Lee Dolsen, Doug Moen
  • Publication number: 20120198038
    Abstract: A policy distribution server provides, on a subscription basis, policy updates to effect desired behaviors of network intermediary devices. The policy updates may specify caching policies, and may in some instances, include instructions for data collection by the network intermediary devices. Data collected in accordance with such instructions may be used to inform future policy updates distributed to the network intermediary devices.
    Type: Application
    Filed: January 30, 2011
    Publication date: August 2, 2012
    Applicant: BLUE COAT SYSTEMS, INC.
    Inventors: Kevin Porter, Thomas J. Kelly, Marcin Lukasz Lizon, Darrell Long, Eric Maki, Kim Tremblay, Jennifer Vance
  • Publication number: 20100191805
    Abstract: A cache logically disposed in a communication path between a client and a server receives a request for a content item and, in response thereto, requests from the server header information concerning the content item and an initial portion of data that makes up the content item. The cache then computes a first hashing value from the header information and a second hashing value from the initial portion of data. A content identifier is created by combining the first hashing value and the second hashing value. Using the content identifier, the cache determines whether a copy of the content item is stored by the cache; and, if so provides same to the client. Otherwise, the requests the content item from the server and, upon receipt thereof, provides it to the client.
    Type: Application
    Filed: January 28, 2010
    Publication date: July 29, 2010
    Inventors: Wei Lu, Jamshid Mahdavi, Darrell Long
  • Publication number: 20080209216
    Abstract: A first computer-based device is authenticated at a second computer-based device communicatively coupled thereto through use of a unique identifier and an encrypted token, each received from the first device. Following the authentication, configuration information for the first device is sent from the second device to the first device and the first device authorized to join a network that includes the second device. Further, permissions related to the network may be granted to the first device.
    Type: Application
    Filed: January 31, 2008
    Publication date: August 28, 2008
    Inventors: Thomas J. Kelly, Samuel H. McLane, Ronald Frederick, Dharmendra Mohan, Darrell Long
  • Publication number: 20070180510
    Abstract: A host computer system is categorized according to uniform resource locator (URL) information extracted from a digital certificate purportedly associated with said host. Thereafter, a secure communication session (e.g., an SSL session) with said host may be granted or denied according to results of the categorizing.
    Type: Application
    Filed: January 31, 2006
    Publication date: August 2, 2007
    Inventors: Darrell Long, Lee Dolsen, Doug Moen
  • Publication number: 20070027941
    Abstract: A resource utilization enforcement system enforces resource quotas in a distributed system. A bank on a central server maintains an account for each principal; the account is equivalent to a resource quota for the principal. Quotas are tracked through the use of digital coins that represent resource consumption. The bank is allowed coin generation privileges. At initiation of a computing session, a purse manager on the client accesses the account of the principal and requests coins to exchange for consumed resources. The purse manager manages the coins withdrawn in a “purse” for the principal. The purse manager submits coins to a cashier on the storage device to “purchase” storage for the principal. Refunds are provided if the storage consumption event frees storage.
    Type: Application
    Filed: July 27, 2005
    Publication date: February 1, 2007
    Inventors: Ralph Attila Becker-Szendy, Richard Golding, Darrell Long
  • Publication number: 20050132154
    Abstract: A method and system for election of a cluster leader in a storage area network is provided Each node in a grouping of storage area network nodes communicates with each of the nodes on a periodic basis to determine if any of the nodes have failed (42). In the event of a cluster fault, each node may request a position of cluster leader. A pruning protocol (60) is invoked to ensure efficient convergence of a single cluster leader candidate to favor a majority grouping leader candidate to become the new cluster leader. In the event the leader candidate from the majority grouping has failed to become the new cluster leader, a minority grouping leader candidate can become the cluster leader. Following the pruning protocol, a voting protocol (100) is invoked followed by lock of the quorum disk (138) by the elected cluster leader candidate.
    Type: Application
    Filed: October 3, 2003
    Publication date: June 16, 2005
    Applicant: International Business Machines Corporation
    Inventors: Sudhir Rao, Robert Rees, Randal Burns, Darrell Long
  • Patent number: 6792424
    Abstract: A data management system for storage area networks (SANs) includes an authentication and directory service that integrates the management of cache coherency and synchronization into an authentication mechanism, referred to herein as a ticket. The data in the system is notionally classified into colors. When a principal computer requests a read or a write access to data of a particular “color”, the service determines whether the principal is authorized for the requested access, and if so, the service issues a ticket to the principal that specifies a data color that the bearer of the ticket is authorized to access using the type of access mechanism specified on the ticket. A hidden “hue” can also be specified on the ticket. The service can variously inform principals to cancel tickets based on color or time of issue and can also variously inform storage devices not to honor tickets of a certain hue or time of issue as appropriate to thereby maintain cache coherency and data consistency.
    Type: Grant
    Filed: April 23, 1999
    Date of Patent: September 14, 2004
    Assignee: International Business Machines Corporation
    Inventors: Randal Chilton Burns, Darrell Long
  • Patent number: 6405315
    Abstract: A decentralized file system based on a network of remotely encrypted storage devices is disclosed. The file system includes a network to which a network client, a secure remotely encrypted storage device, a key manager, and a lock manager are attached. The system organizes data as files and directories. Files or directories are composed of one or more streams, which logically partition the data associated with the files or directories. The device serves as a repository of the system's data. The key manager controls data access keys while the lock manager handles consistency of the files. A network user may have read or write access to a file. Access is controlled using keys and access lists maintained by the key manager.
    Type: Grant
    Filed: September 11, 1997
    Date of Patent: June 11, 2002
    Assignee: International Business Machines Corporation
    Inventors: Randal Chilton Burns, Edward Gustav Chron, Darrell Long, Benjamin Clay Reed
  • Patent number: 5931947
    Abstract: A network storage device is disclosed for use in a secure array of such devices to support a distributed file system. Each device is an independent repository of remotely encrypted data objects to be accessed by authorized network clients. All encryption is done by the clients, rather than by the devices. In order for the system to revoke access to an object on the device, the object must be re-encrypted. Each storage device has a device owner for controlling access to the device's data. All data requests from the clients and responses to them are authenticated using keys derived from the owner key and hashed message authentication codes.
    Type: Grant
    Filed: September 11, 1997
    Date of Patent: August 3, 1999
    Assignee: International Business Machines Corporation
    Inventors: Randal Chilton Burns, Edward Gustav Chron, Darrell Long, Benjamin Clay Reed