Patents by Inventor James G. Morrow, Sr.

James G. Morrow, Sr. 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: 6498938
    Abstract: A system for using a personal wireless communications unit or circuit with a wired telephone system is disclosed herein. In one embodiment, the system permits the user to provide telephone communication on a wired telephone system at a home using signal transmissions provided by a cellular phone instead of the conventional telephone lines. The system includes an interface which facilitates connection of the cellular phone to the system.
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: December 24, 2002
    Inventor: James G. Morrow, Sr.
  • Patent number: 5228735
    Abstract: A hydraulically operated clamshell bucket including left and right bucket halves pivotally supported by a bucket carrier. The bucket halves are opened and closed by the operation of a hydraulic cylinder in cooperation with a compensation link. The clamshell bucket provides an improved structural arrangement for transmitting the force from the hydraulic cylinder to the cutting edges of the bucket halves in that for a given size and rated bucket, the weight of the bucket may be reduced along with the complexity and manufacturing cost of the bucket.
    Type: Grant
    Filed: October 23, 1991
    Date of Patent: July 20, 1993
    Inventor: James G. Morrow, Sr.
  • Patent number: 4625512
    Abstract: A single stage, twin valve, variable torque converter has a vaned input impeller, a vaned, single stage output turbine and a twin valve all disposed in a fluid filled, generally torroid-shaped chamber of a housing. The torque converter by means of its twin valve provides a variable forward output torque for a constant input speed and also provides a low reverse torque. The twin valve consists of two connected, concentric cylindrical sleeves which can be moved axially into and out of the torroid-shaped chamber so that the first sleeve can be interposed between the vanes of the input impeller and the vanes of the output turbine and the second sleeve can surround the vanes of the output turbine and thus seal off the output turbine from the fluid within the torroid-shaped chamber of the torque converter and provide a low reverse torque.
    Type: Grant
    Filed: January 29, 1986
    Date of Patent: December 2, 1986
    Assignee: The Manitowoc Company, Inc.
    Inventor: James G. Morrow, Sr.
  • Patent number: 4601402
    Abstract: Front and rear pairs of crawler assemblies are provided for supporting concentric ring segments disposed forwardly under the boom and rearwardly under the counterweight so the crane can travel under load and swing through at least a partial horizontal arc. One and preferably both crawler assemblies are selectively and reversely powered to facilitate forward and reverse as well as turning movement during travel under loaded and unloaded conditions. The inner ring segment is at least partially surrounded by a rotatable cage structure which provides a connection point for a frame element extending to the forwardly disposed crawler assembly to permit independent steering of the rear crawler assembly.
    Type: Grant
    Filed: May 4, 1981
    Date of Patent: July 22, 1986
    Assignee: The Manitowoc Company, Inc.
    Inventors: Percy R. Helm, James G. Morrow, Sr.
  • Patent number: 4449635
    Abstract: A lift crane having a separated transporter-supported front ring segment and a transporter-supported rear works including a counterweight. The front ring segment is connected by a frame element to the rear works and supports a carrier which pivotally mounts a forwardly-inclined boom and a rearwardly-inclined mast. Movement of the carrier across the front ring segment is permitted by two equal-length links pivotally connected to opposite sides of the carrier and the respective opposite sides of a horizontal bracket mounted on the frame element. The center of rotation of the carrier as it traverses the front ring segment is substantially coincident with the imaginary vertex of a truncated isosceles triangle formed by the carrier and lines running axially along the links. When the carrier is centered on the front ring segment, the center of rotation is also substantially coincident with a vertical axis running through the rearward-most point of the mast.
    Type: Grant
    Filed: August 2, 1982
    Date of Patent: May 22, 1984
    Assignee: The Manitowoc Company, Inc.
    Inventors: Percy R. Helm, James G. Morrow, Sr.
  • Patent number: 4391477
    Abstract: A turntable bearing device having a quick release mounting including inner and outer ball bearing races with the inner race fixed to the lower works and the outer race is detachably connected to the upper works of a load handling device. Gear teeth are provided along the inner circumference of the inner race to engage a pinion gear of the upper works. The quick release feature includes an arcuate beam which is slidably carried on support rails and engages the outer bearing race on one side while a latching means is provided to engage the outer bearing race on its opposite side. The arcuate beam and the latching means prevent rocking or tipping motion of the upper works during machine operation as well as providing the quick release means.
    Type: Grant
    Filed: December 7, 1981
    Date of Patent: July 5, 1983
    Assignee: The Manitowoc Company, Inc.
    Inventor: James G. Morrow, Sr.
  • Patent number: 4387813
    Abstract: A front and rear pair of crawler assemblies are provided for supporting the ring of a ring supported crane so the crane can travel under load. The front pair of crawler assemblies which form an independent transporter mechanism are selectively and reversely powered to facilitate forward and reverse as well as turning movement. The rear pair of crawler assemblies are disposed in idling arrangement.
    Type: Grant
    Filed: September 8, 1981
    Date of Patent: June 14, 1983
    Assignee: The Manitowoc Company, Inc.
    Inventors: Daniel E. Beduhn, James G. Morrow, Sr.
  • Patent number: 4387814
    Abstract: A traveling attachment including two pairs of crawler assemblies and frame elements are provided for interconnection to the ring of a ring supported crane so the crane can travel under load. The crawler assemblies may be pivotally mounted and reversely and independently powered to facilitate turning.
    Type: Grant
    Filed: February 1, 1982
    Date of Patent: June 14, 1983
    Assignee: The Manitowoc Company, Inc.
    Inventors: Daniel E. Beduhn, James G. Morrow, Sr.
  • Patent number: 4382519
    Abstract: A traveling attachment including a pair of crawler assemblies and frame elements are provided for interconnection to the ring of a ring supported crane so the crane can travel under load. The crawler assemblies may be pivotally mounted and reversely powered to facilitate turning.
    Type: Grant
    Filed: September 25, 1981
    Date of Patent: May 10, 1983
    Assignee: The Manitowoc Company, Inc.
    Inventors: Daniel E. Beduhn, James G. Morrow, Sr.
  • Patent number: 4381060
    Abstract: A ring supported mobile lift crane includes a load carrier and a counterweight carrier in riding contact with the ring and a tower mounted on the carrier for pivotal movement between generally horizontal and vertical positions with a boom pivoted to the outer end of the tower and a rearwardly inclined mast mounted on said carrier and connected to the counterweight carrier by rigging a mast pendant, a tower backstay connected to the top of the tower and through tower hoist rigging to the top of the mast.
    Type: Grant
    Filed: July 9, 1980
    Date of Patent: April 26, 1983
    Assignee: The Manitowoc Company, Inc.
    Inventors: James G. Morrow, Sr., Michael C. Anderson
  • Patent number: 4358021
    Abstract: Front and rear pairs of crawler assemblies are provided for supporting separated ring segments disposed forwardly under the boom and rearwardly under the counterweight so the crane can travel under load and swing through at least a partial horizontal arc with separate pivots for the boom and counterweight. One and preferably both crawler assemblies are selectively and reversely powered to facilitate forward and reverse as well as turning movement during travel under loaded and unloaded conditions.
    Type: Grant
    Filed: March 7, 1980
    Date of Patent: November 9, 1982
    Assignee: The Manitowoc Company, Inc.
    Inventors: Percy R. Helm, James G. Morrow, Sr.
  • Patent number: 4316548
    Abstract: Front and rear pairs of crawler assemblies are provided for supporting concentric ring segments disposed forwardly under the boom and rearwardly under the counterweight so the crane can travel under load and swing through at least a partial horizontal arc. One and preferably both crawler assemblies are selectively and reversely powered to facilitate forward and reverse as well as turning movement during travel under loaded and unloaded conditions.
    Type: Grant
    Filed: March 7, 1980
    Date of Patent: February 23, 1982
    Assignee: The Manitowoc Company, Inc.
    Inventors: Percy R. Helm, James G. Morrow, Sr.
  • Patent number: 4284265
    Abstract: Separate torque converters are selectively clutched to the hoist and drag drums of a dragline machine with a selectively engageable clutch providing a power interlock of the output of both torque converters to either one of the drums as desired. The application and control of torque from the two torque converters to the hoist drum is in parallel and to the drag drum is in series progressive, i.e., the drag converter being engaged first and going from zero to maximum while the hoist converter goes from zero to about fifty percent of capacity as the drag converter reaches maximum. The reserve torque in the hoist converter may be selectively applied to the hoist drum to step the drag bucket up if the drag drum approaches a stall condition. The hoist converter may also be selectively engaged to apply a predetermined hold back force during bucket lowering. Another clutch may be engaged to interlock the two drums together for joint operation by the hoist converter.
    Type: Grant
    Filed: December 3, 1979
    Date of Patent: August 18, 1981
    Assignee: The Manitowoc Company, Inc.
    Inventor: James G. Morrow, Sr.
  • Patent number: 4195740
    Abstract: A lift crane in which the upper works is mounted on a platform that rides on a large diameter ring which is fixed to a generally square, planar and rigid frame. The frame is rigidly secured directly to the cross members which interconnect the crawlers of a crawler-transporter, with the securement being releasable by pin connections to permit the ring and its frame to be removed from the crawler-transporter and used as a fixed crane mounting pad.
    Type: Grant
    Filed: April 24, 1978
    Date of Patent: April 1, 1980
    Assignee: The Manitowoc Company, Inc.
    Inventors: Daniel E. Beduhn, James G. Morrow, Sr.
  • Patent number: 4194638
    Abstract: A tower crane is carried on a platform rotatably mounted on a large ring with the tower pivotally mounted on the forward portion of the platform above the ring and a mast mounted on the platform adjacent the boom and extending upwardly and rearwardly therefrom. A counterweight support at the rear end of the platform also rides on the ring and is connected to the top of the mast by a backstay. At the top of the tower is a pivotally mounted, forwardly projecting boom and an upwardly and rearwardly inclined boom strut whose upper end is pin-connected to the top of the mast by a backstay strut. A tower backstay is connected to an upper part of the tower and extends generally horizontally rearwardly to the top of the mast where it is also pin-connected. By removing the pin-connections at the top of the mast, the tower, boom, boom strut, backstay strut and tower backstay can be pivotally raised and lowered as a unit by powered erection rigging mounted on the platform.
    Type: Grant
    Filed: June 7, 1978
    Date of Patent: March 25, 1980
    Assignee: The Manitowoc Company, Inc.
    Inventors: James G. Morrow, Sr., Michael C. Anderson, Richard L. Siehr
  • Patent number: 4143856
    Abstract: Separate torque converters are selectively clutched to the hoist and drag drums of a dragline machine with a selectively engageable clutch providing a power interlock of the output of both torque converters to either one of the drums as desired. Another clutch may be engaged to interlock the two drums together for joint operation by one of the torque converters. Dragline holdback may be achieved by the drag drum brakes, the drag drum converter or the drum interlock thereby providing the operator with considerable flexibility in controlling the path of the drag bucket during hoisting.
    Type: Grant
    Filed: September 23, 1977
    Date of Patent: March 13, 1979
    Assignee: The Manitowoc Company, Inc.
    Inventor: James G. Morrow, Sr.
  • Patent number: 4136855
    Abstract: A hoist drum drive control is provided with both variable displacement and fixed displacement motors geared to the drum and connected in parallel to a variable displacement pump. During high speed hoisting the variable displacement motor is shifted to zero displacement until the back pressure reaches a certain level at which time the displacement is automatically increased until a balanced condition is achieved. When lowering heavy loads a feedback to the variable pump decreases its displacement to prevent over speeding the engine.
    Type: Grant
    Filed: December 3, 1976
    Date of Patent: January 30, 1979
    Assignee: The Manitowoc Company Inc.
    Inventors: James G. Morrow, Sr., David J. Pech, Charles A. Hunter, II
  • Patent number: 4131078
    Abstract: An energy absorbing backhitch for a lift crane including a hollow deformable element which is collapsed between squeeze rollers when the crane is over loaded a predetermined amount with respect to its rated capacity. The backhitch also includes a lift pin and means for sensing deflection of the lift pin and actuating visual and audio signals at predetermined load conditions.
    Type: Grant
    Filed: April 29, 1977
    Date of Patent: December 26, 1978
    Assignee: The Manitowoc Company, Inc.
    Inventor: James G. Morrow, Sr.
  • Patent number: 4103783
    Abstract: A crane assembly which, in heavy lifting configuration, has a platform with boom carrier and counterweight support rotatably mounted on a ring with the mounting including a king pin removably secured to the ring. The platform will easily accept a variety of hoisting machinery. Not only are the boom, mast and ring suitable for other crane configurations, but also the counterweight support and boom carrier are standard subcombinations held rigid with the platform through links defining triangular frames.
    Type: Grant
    Filed: November 25, 1977
    Date of Patent: August 1, 1978
    Assignee: The Manitowoc Company, Inc.
    Inventors: Daniel E. Beduhn, James G. Morrow, Sr., David J. Pech
  • Patent number: D309816
    Type: Grant
    Filed: March 27, 1987
    Date of Patent: August 7, 1990
    Assignee: F. C. Heiden
    Inventor: James G. Morrow, Sr.