Patents Assigned to Wright Manufacturing, Inc.
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Publication number: 20080034722Abstract: This invention relates to self-propelled lawn mower including at least one cutting blade and at least first and second rear drive wheels. Optionally, a grass collection system may be mounted on the mower, with much of the system being located laterally rearward of the rear drive wheels so that the center of gravity of the mower is shifted rearwardly. In order to compensate for such a center of gravity shift, the respective positions of the rear drive wheels are adjustable. In certain example embodiments of this invention, the lateral positions of the rear drive wheels may be selectively adjusted as desired by the operator (e.g., to move the center of gravity of the mower forward relative to the rear drive wheels in order to compensate for the added rear-heavy weight of the grass collection system).Type: ApplicationFiled: August 14, 2006Publication date: February 14, 2008Applicant: Wright Manufacturing, Inc.Inventors: Edward R. Wright, Luke B. Waesche, William R. Wright
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Publication number: 20080034723Abstract: A power lawn mower includes at least one cutting blade driven, directly or indirectly, by an engine. A cutter deck assembly of the mower includes a cutter deck, cutting blade(s) housed therein, and a pulley/belt system powered by a drive shaft of the engine for driving the cutting blade(s). The cutter deck assembly is selectively adjustable upward/downward to adjust the cutting height of the mower and/or to allow an operator to put the cutter deck assembly in a heightened position for storage and/or transport and thereafter lower the cutter deck assembly to a cutting position. In certain example embodiments of this invention, a latch system is provided as part of a deck lift system for permitting the cutter deck assembly to be more easily and/or efficiently raised/lowered.Type: ApplicationFiled: August 11, 2006Publication date: February 14, 2008Applicant: Wright Manufacturing, Inc.Inventors: Edward R. Wright, Luke B. Waesche, William R. Wright
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Publication number: 20080034721Abstract: A self-propelled lawn mower includes at least one cutting blade, at least first and second drive wheels, and hydro pumps for controlling the drive wheels. At least first and second belts are used to drive the pumps and blade(s) of the cutter deck, respectively. In certain example embodiments of this invention, the belt(s) for driving the hydro pumps is/are provided at an elevation lower than a belt(s) for driving the blade(s) of the cutter deck. In certain example embodiments of this invention, this advantageously permits the center of gravity of the mower to be lowered by permitting the hydro pumps and/or engine of the mower to be positioned at a lower elevation. In certain example embodiments, one or both of the hydro pumps is/are mounted on a pump deck which is at an elevation lower than that of the engine deck where the engine is mounted.Type: ApplicationFiled: August 11, 2006Publication date: February 14, 2008Applicant: Wright Manufacturing, Inc.Inventors: Luke B. Waesche, Edward R. Wright, William R. Wright
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Patent number: 7325388Abstract: A lawn mower is provided. In certain example embodiments, the lawn mower includes an improved steering control system/assembly and/or an improved pump control linkage system/assembly. In certain example embodiments, the mower includes an engine deck supporting an engine that drives the at least one blade for cutting grass, the engine deck also supporting a first hydraulic pump that controls the right rear drive wheel and a second hydraulic pump that controls the left rear drive wheel. A deck lift system is for raising/lowering the engine deck relative to both a frame of the mower and a handle control assembly.Type: GrantFiled: August 30, 2005Date of Patent: February 5, 2008Assignee: Wright Manufacturing, Inc.Inventors: William R. Wright, Glenn T. Hubert, Luke Waesche, James D. Velke
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Patent number: 7318311Abstract: A lawn mower is provided. In certain example embodiments, the lawn mower includes an improved deck lift system and/or an improved brake pump lock-out system. In certain example embodiments, a deck lift system may lift/lower the cutter deck, engine deck, engine, and handle control assembly together at the same time.Type: GrantFiled: August 22, 2005Date of Patent: January 15, 2008Assignee: Wright Manufacturing, Inc.Inventors: Edward R. Wright, William R. Wright, Luke Waesche, James D. Velke
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Patent number: 7272920Abstract: A grass catcher is provided for attachment to a lawn mower such as a commercial lawn mower. In certain example embodiments, the catcher includes at least one baffle for causing a venturi effect during grass cutting operation. The presence of such a baffle may allow for reduced grass clogging and/or improved grass packing in the catcher during mower operation in certain example instances.Type: GrantFiled: February 3, 2004Date of Patent: September 25, 2007Assignee: Wright Manufacturing, Inc.Inventors: William R. Wright, James D. Velke, Glenn T. Hubert
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Publication number: 20070107403Abstract: A walk-behind lawn mower includes at least one of: (a) a latch assembly for receiving a folded-up sulky for storage during transport and the like; (b) inboard mounted control rods extending downwardly from a handle control assembly area of the mower, so that actuator shafts for the hydraulic pumps are located on inboard sides of the pumps so as to oppose one another; (c) a handle control assembly for allowing the mower to be operated in an efficient manner with operator comfort during turns and the like; and/or (d) a pump lock-out system including a lever(s) for actuating both a braking force to be applied to at least one wheel of the mower and a pump lock-out system for causing the pumps to be locked in a neutral position.Type: ApplicationFiled: January 9, 2007Publication date: May 17, 2007Applicant: Wright Manufacturing Inc.Inventors: James Velke, William Wright
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Publication number: 20070044446Abstract: A lawn mower is provided. In certain example embodiments, the lawn mower includes an improved steering control system/assembly and/or an improved pump control linkage system/assembly.Type: ApplicationFiled: August 30, 2005Publication date: March 1, 2007Applicant: Wright Manufacturing, Inc.Inventors: William Wright, Glenn Hubert, Luke Waesche, James Velke
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Publication number: 20070039302Abstract: This invention relates to a lawn mower. In certain example embodiments, the lawn mower includes one or more of: (a) a cooling baffle for efficiently cooling a hydraulic fluid tank and/or fluid therein using air flow caused by a combustion engine used for driving mower cutting blade(s); (b) improved cockpit structure including fenders; (c) improved drive wheel(s) adjustment structure or assembly; (d) improved idler arm assembly for use in connection with the cutter deck and/or pump driving belt; and/or (e) improved hose routing structure.Type: ApplicationFiled: August 22, 2005Publication date: February 22, 2007Applicant: Wright Manufacturing, Inc.Inventors: James Velke, William Wright, Luke Waesche
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Publication number: 20070039301Abstract: This invention relates to a lawn mower. In certain example embodiments, the lawn mower may be of the walk-behind type. In certain example embodiments of this invention, the lawn mower may have one or more of: (a) an improved handlebar weldment assembly, (b) an improved operator presence control (OPC) system and structure, (c) an improved speed control system structure, (d) an improve cam bar system for hydraulic pump control, (e) a return-to-neutral biasing system that biases hand lever(s) toward a neutral position but only from a reverse position (not from a forward position), and/or (f) an improved tracking adjustment system.Type: ApplicationFiled: August 22, 2005Publication date: February 22, 2007Applicant: Wright Manufacturing, Inc.Inventors: James Velke, William Wright, Luke Waesche
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Publication number: 20070039304Abstract: A lawn mower is provided. In certain example embodiments, the lawn mower includes an improved deck lift system and/or an improved brake pump lock-out system. In certain example embodiments, a-deck lift system may lift/lower the cutter deck, engine deck, engine, and handle control assembly together at the same time.Type: ApplicationFiled: August 22, 2005Publication date: February 22, 2007Applicant: Wright Manufacturing, Inc.Inventors: Edward Wright, William Wright, Luke Waesche, James Velke
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Patent number: 6935093Abstract: A self-propelled power lawn mower deck lift system for raising and lowering the cutter deck assembly together with the engine deck and engine as a single unit in order to adjust the cutting height of the mower. Control arms may be of short enough length so that pivoting of the control arms an angle ? of fifteen degrees during raising or lowering of the cutter deck assembly causes the cutter deck assembly to move a vertical distance “d” of no more than about 2.5 inches.Type: GrantFiled: July 2, 2002Date of Patent: August 30, 2005Assignee: Wright Manufacturing, Inc.Inventors: James D. Velke, William R. Wright
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Patent number: 6935092Abstract: A self-propelled power lawn mower for operation by an operator. The operator can operate the mower while standing on a foot platform, or alternatively when sitting down on a selectively deployable seat. Thus, the mower includes both sitting and standing modes. In certain embodiments, at least a portion of the foot platform is located between first and second rear drive wheels. The rear drive wheels are independently driveable in both forward and reverse directions at variable speeds so as to allow for approximate zero radius turning of the mower about a vertical turning axis. The foot platform is positioned near this vertical axis so that the operator when standing may be substantially unaffected by centrifugal force created during approximate zero radius turning of the mower.Type: GrantFiled: March 14, 2003Date of Patent: August 30, 2005Assignee: Wright Manufacturing, Inc.Inventors: James D. Velke, William R. Wright, William D. Patton
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Patent number: 6912831Abstract: A zero turning radius power lawn mower for operation by a standing occupant includes first and second independently driven and controlled rear drive wheels mounted on separate drive axles. A riding platform for supporting the standing occupant or operator is located between the first and second rear drive wheels. The rear drive wheels are independently driveable in both the forward and reverse directions at variable speeds so as to allow for substantially zero radius turning of the mower about a central turning point. The riding platform is positioned near this turning point or axis so that the standing occupant remains substantially unaffected by centrifugal force created during approximate zero radius is turning of the mower thereby allowing the mower to take such turns at higher speeds. The low center of gravity created by the position of the riding platform for the standing operator also results in the mower having improved traction and being less likely to pop “wheelies” upon acceleration.Type: GrantFiled: November 17, 2003Date of Patent: July 5, 2005Assignee: Wright Manufacturing, Inc.Inventors: James D. Velke, William R. Wright
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Publication number: 20050126146Abstract: A walk-behind lawn mower includes at least one of: (a) a latch assembly for receiving a folded-up sulky for storage during transport and the like; (b) inboard mounted control rods extending downwardly from a handle control assembly area of the mower, so that actuator shafts for the hydraulic pumps are located on inboard sides of the pumps so as to oppose one another; (c) a handle control assembly for allowing the mower to be operated in an efficient manner with operator comfort during turns and the like; and/or (d) a pump lock-out system including a lever(s) for actuating both a braking force to be applied to at least one wheel of the mower and a pump lock-out system for causing the pumps to be locked in a neutral position.Type: ApplicationFiled: November 14, 2003Publication date: June 16, 2005Applicant: Wright Manufacturing, Inc.Inventors: James Velke, William Wright
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Patent number: 6868658Abstract: A self-propelled power lawn mower is provided with a deck lifting system. The operator can lift the cutter deck (and optionally the engine deck as well) by pulling upward/backward on a deck-lifting lever. Moreover, a latch system is provided for permitting the deck to be lowered and/or adjusted.Type: GrantFiled: November 17, 2003Date of Patent: March 22, 2005Assignee: Wright Manufacturing, Inc.Inventors: James D. Velke, William R. Wright
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Patent number: 6862872Abstract: A zero-turning-radius power lawn mower for operation by a standing-occupant includes first and second independently driven and controlled rear drive wheels mounted on separate drive axles. A riding platform for supporting the standing-occupant or operator is located between the first and second rear drive wheels. The rear drive wheels are independently driveable in both the forward and reverse directions at variable speeds so as to allow for substantially zero-radius-turning of the mower about a central turning point. The riding platform is positioned at this turning point so that the standing-occupant remains substantially unaffected by centrifugal force created during approximate zero-radius-turning of the mower thereby allowing the mower to take such turns at higher speeds.Type: GrantFiled: September 23, 2003Date of Patent: March 8, 2005Assignee: Wright Manufacturing, Inc.Inventors: William R. Wright, James Velke
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Publication number: 20040200202Abstract: A grass catcher is provided for attachment to a lawn mower such as a commercial lawn mower. In certain example embodiments, the catcher includes at least one baffle for causing a venturi effect during grass cutting operation. The presence of such a baffle may allow for reduced grass clogging and/or improved grass packing in the catcher during mower operation in certain example instances.Type: ApplicationFiled: February 3, 2004Publication date: October 14, 2004Applicant: Wright Manufacturing, Inc.Inventors: William R. Wright, James D. Velke, Glenn T. Hubert
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Publication number: 20040093840Abstract: A self-propelled power lawn mower is provided with an improved deck lifting system. The operator can efficiently lift the cutter deck (and optionally the engine deck as well) in an efficient manner by pulling upward/backward on a deck-lifting lever. Moreover, a latch system is provided for enabling the deck to be lowered and/or adjusted in an efficient manner.Type: ApplicationFiled: November 17, 2003Publication date: May 20, 2004Applicant: Wright Manufacturing, Inc.Inventors: James D. Velke, William R. Wright
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Publication number: 20040055267Abstract: A zero-turning-radius power lawn mower for operation by a standing-occupant includes first and second independently driven and controlled rear drive wheels mounted on separate drive axles. A riding platform for supporting the standing-occupant or operator is located between the first and second rear drive wheels. The rear drive wheels are independently driveable in both the forward and reverse directions at variable speeds so as to allow for substantially zero-radius-turning of the mower about a central turning point. The riding platform is positioned at this turning point so that the standing-occupant remains substantially unaffected by centrifugal force created during approximate zero-radius-turning of the mower thereby allowing the mower to take such turns at higher speeds.Type: ApplicationFiled: September 23, 2003Publication date: March 25, 2004Applicant: Wright Manufacturing, Inc.Inventors: William R. Wright, James D. Velke