Patents by Inventor David R. Maas

David R. Maas 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: 7575064
    Abstract: A soil aeration apparatus may include aeration tines that are actuated by a relatively compact gear system that reduces the size and weight of the apparatus. In addition, a soil aeration apparatus may operate without a centrally disposed support shaft, thus enabling the tine-holder shafts to be positioned closer to one another and reducing the size of the apparatus.
    Type: Grant
    Filed: September 26, 2007
    Date of Patent: August 18, 2009
    Assignee: PlanetAir Turf Products, LLC
    Inventors: David R. Maas, Scott W. Bjorge
  • Publication number: 20090154401
    Abstract: A method is provided for allocating initial ranging opportunities in a series of frames. According to the method, a number of initial ranging opportunities are allocated in frame N that occurs after a triggering event, and k frames after frame N the number of initial ranging opportunities is selectively reduced. The triggering event is one of system startup and broadcast of an Uplink Channel Descriptor message. Also provided is a base station that includes a controller for allocating a number of initial ranging opportunities in frame N that occurs after a triggering event. The controller selectively reduces the number of initial ranging opportunities k frames after frame N. The triggering event is one of system startup, broadcast of an Uplink Channel Descriptor message, broadcast of a page message, or broadcast of a signature for an overhead configuration message.
    Type: Application
    Filed: December 18, 2007
    Publication date: June 18, 2009
    Applicant: MOTOROLA, INC.
    Inventors: Rishi R. Arora, David R. Maas, John M. Harris, Jun Wang, Robert V. Stephens, Samir S. Vaidya
  • Publication number: 20090141677
    Abstract: A technique for handling service flows in a wireless communication system includes receiving a first packet over a first service flow. In this case, the first service flow has a first quality of service. Next, a packet classifier associated with the first packet is determined. A second service flow with a selected quality of service is then created when the packet classifier for the first packet corresponds to a selected classifier.
    Type: Application
    Filed: December 3, 2007
    Publication date: June 4, 2009
    Applicant: Motorola, Inc.
    Inventor: David R. Maas
  • Publication number: 20090038814
    Abstract: A soil aeration apparatus may include aeration tines that are actuated by a relatively compact gear system that reduces the size and weight of the apparatus. In addition, a soil aeration apparatus may operate without a centrally disposed support shaft, thus enabling the tine-holder shafts to be positioned closer to one another and reducing the size of the apparatus.
    Type: Application
    Filed: October 14, 2008
    Publication date: February 12, 2009
    Applicant: PLANETAIR TURF PRODUCTS, LLC
    Inventors: Scott W. Bjorge, David R. Maas
  • Publication number: 20090008108
    Abstract: A soil aeration device may include a plurality of arcuate blades mounted to an assembly adapted to rotate and translate the blades proximate a ground surface, thereby forming aeration pockets in the soil. In certain embodiments, the arcuate tines penetrate and fracture the soil while minimizing the amount of soil lifted from the pocket deposited on the top of the soil. In various embodiments, a planetary gear assembly imparts to the tine a translational and rotational movement which creates a fractured pocket in the soil while minimizing the amount of soil lifted from the pocket and deposited on the surface of the soil. In still other embodiments, the arcuate tine may have mounted thereon a coring tube that cuts and removes a plug from the pocket formed in the soil.
    Type: Application
    Filed: September 11, 2008
    Publication date: January 8, 2009
    Applicant: PLANETAIR LLC
    Inventors: Scott W. Bjorge, David R. Maas
  • Patent number: 7451831
    Abstract: A soil aeration apparatus may include aeration tines that are actuated by a relatively compact gear system that reduces the size and weight of the apparatus. In addition, a soil aeration apparatus may operate without a centrally disposed support shaft, thus enabling the tine-holder shafts to be positioned closer to one another and reducing the size of the apparatus.
    Type: Grant
    Filed: October 6, 2005
    Date of Patent: November 18, 2008
    Assignee: PlanetAir Turf Products, LLC
    Inventors: Scott W. Bjorge, David R. Maas
  • Patent number: 7438136
    Abstract: A soil aeration device may include a plurality of arcuate blades mounted to an assembly adapted to rotate and translate the blades proximate a ground surface, thereby forming aeration pockets in the soil. In certain embodiments, the arcuate tines penetrate and fracture the soil while minimizing the amount of soil lifted from the pocket deposited on the top of the soil. In various embodiments, a planetary gear assembly imparts to the tine a translational and rotational movement which creates a fractured pocket in the soil while minimizing the amount of soil lifted from the pocket and deposited on the surface of the soil. In still other embodiments, the arcuate tine may have mounted thereon a coring tube that cuts and removes a plug from the pocket formed in the soil.
    Type: Grant
    Filed: October 11, 2005
    Date of Patent: October 21, 2008
    Assignee: PlanetAir Turf Products, LLC
    Inventors: David R. Maas, Scott W. Bjorge
  • Publication number: 20080109693
    Abstract: A method is described for providing Hybrid Automatic Repeat Request (HARQ) transmission feedback to a higher layer protocol in a communication system. The method includes a step of detecting HARQ retransmissions in a first layer protocol. This can be used to determine a HARQ failure or an HARQ ACK after a delay of some retransmissions. A next step includes providing feedback information about the detecting step from the first layer protocol to a higher layer protocol. A next step includes instituting corrections at the higher layer protocol, in response to the information transferred from the first layer protocol. These corrections can include immediate retransmission of those bursts of a HARQ failure, or correcting timers to match the delay of eventually ACK'ed data.
    Type: Application
    Filed: October 23, 2007
    Publication date: May 8, 2008
    Applicant: MOTOROLA, INC.
    Inventors: David R. Maas, Ravi M. Adatrao, Pramod Karnam, Mark J. Marsan
  • Patent number: 7341115
    Abstract: In certain embodiments a soil aerator may include a hinged frame assembly that cooperates with one or more weight transferring systems adapted to permit an aeration subassembly to lift off the ground when an aeration tine impacts a hard obstacle such as a rock in the soil. The weight transferring systems may in the preferred embodiments be calibrated so that only minimal upward force, such as that caused by impact of an aeration tine with a rock, may cause the aeration subassembly to lift thereby significantly reducing or preventing damage to the aeration tines and drive assemblies and substantially prolonging the life of the aerator.
    Type: Grant
    Filed: May 2, 2006
    Date of Patent: March 11, 2008
    Assignee: PlanetAir Turf Products, LLC
    Inventors: David R. Maas, Scott W. Bjorge
  • Patent number: 7290619
    Abstract: A soil aeration apparatus may include aeration tines that are actuated by a relatively compact gear system that reduces the size and weight of the apparatus. In addition, a soil aeration apparatus may operate without a centrally disposed support shaft, thus enabling the tine-holder shafts to be positioned closer to one another and reducing the size of the apparatus.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: November 6, 2007
    Assignee: PlanetAir Turf Products, LLC
    Inventors: David R. Maas, Scott W. Bjorge
  • Patent number: 7204317
    Abstract: Certain embodiments of the invention include an aerator that provides a shifting means adapted to alter the path of the aeration tines so that they do not impact the ground surface, the shifting being effected without lifting the entire aerator from the ground surface. Some embodiments of an aerator further include an energy modulation system that is capable of relieving a shock to the gear system caused by an aeration tine impacting debris, rocks or a hardened portion in the ground.
    Type: Grant
    Filed: June 14, 2004
    Date of Patent: April 17, 2007
    Assignee: PlanetAir Turf Products, LLC
    Inventors: David R. Maas, Scott W. Bjorge
  • Patent number: 7152691
    Abstract: A soil aeration device may include a plurality of arcuate blades mounted to an assembly adapted to rotate and translate the blades proximate a ground surface, thereby forming aeration pockets in the soil. In certain embodiments, the arcuate tines penetrate and fracture the soil while minimizing the amount of soil lifted from the pocket deposited on the top of the soil. In various embodiments, a planetary gear assembly imparts to the tine a translational and rotational movement which creates a fractured pocket in the soil while minimizing the amount of soil lifted from the pocket and deposited on the surface of the soil. In still other embodiments, the arcuate tine may have mounted thereon a coring tube that cuts and removes a plug from the pocket formed in the soil.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: December 26, 2006
    Assignee: PlanetAir Turf Products, LLC
    Inventors: David R. Maas, Scott W. Bjorge
  • Patent number: 7096968
    Abstract: A soil aeration device may include a plurality of arcuate blades mounted to an assembly adapted to rotate and translate the blades proximate a ground surface, thereby forming aeration pockets in the soil. In certain embodiments, the arcuate tines penetrate and fracture the soil while minimizing the amount of soil lifted from the pocket deposited on the top of the soil. In various embodiments, a planetary gear assembly imparts to the tine a translational and rotational movement which creates a fractured pocket in the soil while minimizing the amount of soil lifted from the pocket and deposited on the surface of the soil. In still other embodiments, the arcuate tine may have mounted thereon a coring tube that cuts and removes a plug from the pocket formed in the soil.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: August 29, 2006
    Assignee: PlanetAir Turf Products, LLC
    Inventors: David R. Maas, Scott W. Bjorge
  • Patent number: 7070005
    Abstract: In certain embodiments a soil aerator may include a hinged frame assembly that cooperates with one or more weight transferring systems adapted to permit an aeration subassembly to lift off the ground when an aeration tine impacts a hard obstacle such as a rock in the soil. The weight transferring systems may in the preferred embodiments be calibrated so that only minimal upward force, such as that caused by impact of an aeration tine with a rock, may cause the aeration subassembly to lift thereby significantly reducing or preventing damage to the aeration tines and drive assemblies and substantially prolonging the life of the aerator.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: July 4, 2006
    Assignee: PlanetAir Turf Products, LLC
    Inventors: David R. Maas, Scott W. Bjorge
  • Patent number: 7055617
    Abstract: A soil aeration apparatus may include aeration tines that are actuated by a relatively compact gear system that reduces the size and weight of the apparatus. In addition, a soil aeration apparatus may operate without a centrally disposed support shaft, thus enabling the tine-holder shafts to be positioned closer to one another and reducing the size of the apparatus.
    Type: Grant
    Filed: August 11, 2003
    Date of Patent: June 6, 2006
    Assignee: PlanetAir Turf Products, LLC
    Inventors: Scott W. Bjorge, David R. Maas
  • Publication number: 20030230417
    Abstract: A soil aeration device may include a plurality of arcuate blades mounted to an assembly adapted to rotate and translate the blades proximate a ground surface, thereby forming aeration pockets in the soil. In certain embodiments, the arcuate tines penetrate and fracture the soil while minimizing the amount of soil lifted from the pocket deposited on the top of the soil. In various embodiments, a planetary gear assembly imparts to the tine a translational and rotational movement which creates a fractured pocket in the soil while minimizing the amount of soil lifted from the pocket and deposited on the surface of the soil. In still other embodiments, the arcuate tine may have mounted thereon a coring tube that cuts and removes a plug from the pocket formed in the soil.
    Type: Application
    Filed: March 12, 2003
    Publication date: December 18, 2003
    Inventor: David R. Maas