Patents Assigned to Harper Trucks, Inc.
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Patent number: 12240517Abstract: A hand truck with main wheels and a toe plate also includes a handle assembly that is mounted to the frame of the hand truck so that the handle assembly is able to rotate and slide relative to the truck frame. The hand truck may be arranged in a first upright dolly position in which the handle assembly is generally aligned with the truck frame and a second cart position in which the truck frame is generally horizontal and the handle assembly is extended and rotated so that it is upright and normal relative to the truck frame. A latch assembly mounted to the truck frame is able to releasably receive and secure the handle assembly in the first upright dolly position.Type: GrantFiled: January 16, 2024Date of Patent: March 4, 2025Assignee: Harper Trucks, Inc.Inventor: Jose' Angel Caceres Mendoza
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Patent number: 12221148Abstract: A hand truck includes a frame that is supported by main wheels and a handle having two side members. Two handle brackets are pivotably mounted on opposite sides of the frame. The handle brackets are arranged for rotation in relation to the frame around a handle rotation axis. The handle brackets slidably receive the side members of the handle so that the handle is able to slide between a first retracted position and a second extended positon. The handle is also able to rotate with the handle brackets between first and second rotational positions. A lock mechanism that is mechanically associated with the handle brackets and the handle is able to releasably lock the degree of extension of the handle in at least one position between the retracted and extended positions and is able to lock the rotational position of the handle in at least one rotational position.Type: GrantFiled: January 23, 2023Date of Patent: February 11, 2025Assignee: Harper Trucks, Inc.Inventor: José Angel Caceres Mendoza
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Publication number: 20240343289Abstract: A hand truck with main wheels and a toe plate also includes a handle assembly that is mounted to the frame of the hand truck so that the handle assembly is able to rotate and slide relative to the truck frame. The hand truck may be arranged in a first upright dolly position in which the handle assembly is generally aligned with the truck frame and a second cart position in which the truck frame is generally horizontal and the handle assembly is extended and rotated so that it is upright and normal relative to the truck frame. A latch assembly mounted to the truck frame is able to releasably receive and secure the handle assembly in the first upright dolly position.Type: ApplicationFiled: January 16, 2024Publication date: October 17, 2024Applicant: Harper Trucks, Inc.Inventor: Jose' Angel Caceres Mendoza
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Publication number: 20240067245Abstract: A hand truck includes a base plate assembly that can rotate between an extended position and a retracted position. The base plate assembly includes a base plate and upright extending base plate brackets. At least one of the base plate brackets comes into contact at least indirectly with the frame when the base plate assembly is rotated to the extended position. A biased lock and release member is mounted at least indirectly to the frame. The lock and release member is arranged to rotate to an open position against its bias when pressed upon by the base plate bracket. The base plate bracket is secured when the lock and release member returns to its closed position. If the lock and release member is pressed to the open position, the base plate bracket is released and the base plate assembly may be rotated to the retracted position.Type: ApplicationFiled: August 30, 2023Publication date: February 29, 2024Applicant: Harper Trucks, Inc.Inventor: José Angel Caceres Mendoza
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Publication number: 20230331275Abstract: A hand truck includes a frame that is supported by main wheels and a handle having two side members. Two handle brackets are pivotably mounted on opposite sides of the frame. The handle brackets are arranged for rotation in relation to the frame around a handle rotation axis. The handle brackets slidably receive the side members of the handle so that the handle is able to slide between a first retracted position and a second extended positon. The handle is also able to rotate with the handle brackets between first and second rotational positions. A lock mechanism that is mechanically associated with the handle brackets and the handle is able to releasably lock the degree of extension of the handle in at least one position between the retracted and extended positions and is able to lock the rotational position of the handle in at least one rotational position.Type: ApplicationFiled: January 23, 2023Publication date: October 19, 2023Applicant: Harper Trucks, Inc.Inventor: José Angel Caceres Mendoza
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Publication number: 20230117807Abstract: A hand truck with main wheels and a toe plate also includes a handle assembly that is mounted to the frame of the hand truck so that the handle assembly is able to rotate and slide relative to the truck frame. The hand truck may be arranged in a first upright dolly position in which the handle assembly is generally aligned with the truck frame and a second cart position in which the truck frame is generally horizontal and the handle assembly is extended and rotated so that it is upright and normal relative to the truck frame. A latch assembly mounted to the truck frame is able to releasably receive and secure the handle assembly in the first upright dolly position.Type: ApplicationFiled: September 21, 2022Publication date: April 20, 2023Applicant: Harper Trucks, Inc.Inventor: José Angel Caceres Mendoza
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Patent number: 11560168Abstract: A hand truck includes a frame that is supported by main wheels and a handle having two side members. Two handle brackets are pivotably mounted on opposite sides of the frame. The handle brackets are arranged for rotation in relation to the frame around a handle rotation axis. The handle brackets slidably receive the side members of the handle so that the handle is able to slide between a first retracted position and a second extended positon. The handle is also able to rotate with the handle brackets between first and second rotational positions. A lock mechanism that is mechanically associated with the handle brackets and the handle is able to releasably lock the degree of extension of the handle in at least one position between the retracted and extended positions and is able to lock the rotational position of the handle in at least one rotational position.Type: GrantFiled: December 14, 2020Date of Patent: January 24, 2023Assignee: HARPER TRUCKS, INC.Inventor: José Angel Caceres Mendoza
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Patent number: 11472461Abstract: A hand truck with main wheels and a toe plate also includes a handle assembly that is mounted to the frame of the hand truck so that the handle assembly is able to rotate and slide relative to the truck frame. The hand truck may be arranged in a first upright dolly position in which the handle assembly is generally aligned with the truck frame and a second cart position in which the truck frame is generally horizontal and the handle assembly is extended and rotated so that it is upright and normal relative to the truck frame. A latch assembly mounted to the truck frame is able to releasably receive and secure the handle assembly in the first upright dolly position.Type: GrantFiled: March 8, 2020Date of Patent: October 18, 2022Assignee: HARPER TRUCKS, INC.Inventor: José Angel Caceres Mendoza
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Publication number: 20220227403Abstract: A hand truck includes a frame that is supported by main wheels and a handle having two side members. Two handle brackets are pivotably mounted on opposite sides of the frame. The handle brackets are arranged for rotation in relation to the frame around a handle rotation axis. The handle brackets slidably receive the side members of the handle so that the handle is able to slide between a first retracted position and a second extended positon. The handle is also able to rotate with the handle brackets between first and second rotational positions. A lock mechanism that is mechanically associated with the handle brackets and the handle is able to releasably lock the degree of extension of the handle in at least one position between the retracted and extended positions and is able to lock the rotational position of the handle in at least one rotational position.Type: ApplicationFiled: December 14, 2020Publication date: July 21, 2022Applicant: Harper Trucks, Inc.Inventor: José Angel Caceres Mendoza
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Patent number: 10864933Abstract: A hand truck includes a frame that is supported by main wheels and a handle having two side members. Two handle brackets are pivotably mounted on opposite sides of the frame. The handle brackets are arranged for rotation in relation to the frame around a handle rotation axis. The handle brackets slidably receive the side members of the handle so that the handle is able to slide between a first retracted position and a second extended position. The handle is also able to rotate with the handle brackets between first and second rotational positions. A lock mechanism that is mechanically associated with the handle brackets and the handle is able to releasably lock the degree of extension of the handle in at least one position between the retracted and extended positions and is able to lock the rotational position of the handle in at least one rotational position.Type: GrantFiled: June 1, 2018Date of Patent: December 15, 2020Assignee: HARPER TRUCKS, INC.Inventor: José Angel Caceres Mendoza
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Publication number: 20200283049Abstract: A hand truck with main wheels and a toe plate also includes a handle assembly that is mounted to the frame of the hand truck so that the handle assembly is able to rotate and slide relative to the truck frame. The hand truck may be arranged in a first upright dolly position in which the handle assembly is generally aligned with the truck frame and a second cart position in which the truck frame is generally horizontal and the handle assembly is extended and rotated so that it is upright and normal relative to the truck frame. A latch assembly mounted to the truck frame is able to releasably receive and secure the handle assembly in the first upright dolly position.Type: ApplicationFiled: March 8, 2020Publication date: September 10, 2020Applicant: Harper Trucks, Inc.Inventor: José Angel Caceres Mendoza
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Patent number: 10703397Abstract: A hand truck that includes frame assembly, wheels and a toe plate assembly. The frame assembly includes two side members and a base member extending between the lower ends of the side members. The toe plate assembly is rotatably mounted to the frame so that the toe plate is able to rotate between an operating position in which the toe portion extends forward for sliding under and lifting loads and the toe plate rests against the base member of the frame and a storage position in which the toe plate rests upon the wheel axle and an intermediate shipping position such that when the wheels are removed the hand truck may fit into a box having a minimum depth.Type: GrantFiled: February 26, 2019Date of Patent: July 7, 2020Assignee: Harper Trucks, Inc.Inventor: José Angel Caceres Mendoza
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Publication number: 20180346009Abstract: A hand truck includes a frame that is supported by main wheels and a handle having two side members. Two handle brackets are pivotably mounted on opposite sides of the frame. The handle brackets are arranged for rotation in relation to the frame around a handle rotation axis. The handle brackets slidably receive the side members of the handle so that the handle is able to slide between a first retracted position and a second extended position. The handle is also able to rotate with the handle brackets between first and second rotational positions. A lock mechanism that is mechanically associated with the handle brackets and the handle is able to releasably lock the degree of extension of the handle in at least one position between the retracted and extended positions and is able to lock the rotational position of the handle in at least one rotational position.Type: ApplicationFiled: June 1, 2018Publication date: December 6, 2018Applicant: Harper Trucks, Inc.Inventor: José Angel Caceres Mendoza
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Patent number: 6758482Abstract: A multipurpose cart having a hand truck base with a nose extension, a tub, a handle wherein the handle is adjustably mounted in two positions 90 degrees apart, a shelf, caster wheels and a storage device. The multipurpose cart can be modified into various configurations for a variety of functions.Type: GrantFiled: March 27, 2002Date of Patent: July 6, 2004Assignee: Harper Trucks, Inc.Inventor: John J. Stallbaumer
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Publication number: 20030062700Abstract: A multipurpose cart having a hand truck base with a nose extension, a tub, a handle wherein the handle is adjustably mounted in two positions 90 degrees apart, a shelf, caster wheels and a storage device. The multipurpose cart can be modified into various configurations for a variety of functions.Type: ApplicationFiled: March 27, 2002Publication date: April 3, 2003Applicant: Harper Trucks, Inc.Inventor: John J. Stallbaumer
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Patent number: 6481727Abstract: A hand truck toe plate formed from light gauge steel sheet having a load supporting horizontal portion and a mounting vertical portion. The horizontal portion and vertical portion are separated by a 90 degree bend and include a plurality of longitudinal ribs. The vertical portion also includes two lateral ears that each have an end defined by a notch and are adapted to be mounted to side frames of the hand truck.Type: GrantFiled: November 23, 1999Date of Patent: November 19, 2002Assignee: Harper Trucks, Inc.Inventor: John J. Stallbaumer
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Patent number: 6419434Abstract: An adjustable length cargo brace for restraining loads in semi-trailers comprising two legs, one connected to the other for through an offset collar permitting a limited pivotal and sliding movement between the two legs, a pin member on one of the legs approximate the offset collar which releaseably engages one of a series of openings positioned longitudinally along the opposite leg to engage the two legs together in a pivotally toggled action as they move into parallel contacting relation and a releaseable hook member mounted on one of the legs for engaging and retaining the other leg in parallel contacting relation.Type: GrantFiled: May 1, 2000Date of Patent: July 16, 2002Assignee: Harper Trucks, Inc.Inventor: Robert D. Rahn
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Patent number: 6308967Abstract: A dual position hand truck includes a central frame having two side rails and a toe plate. Positioned at an upper end of the central frame is a U-shaped handle bar which has a hand gripping portion and two extended legs with castered wheels attached at their respective bottom ends. The handle bar is pivotally attached to the frame by a fixed shaft and a pair of support brackets. The support brackets also allow the extended legs to slide along their length. Attached to the support brackets is a spring biased locking bar which locks the handle bar against rotational movement relative to the frame.Type: GrantFiled: June 2, 2000Date of Patent: October 30, 2001Assignee: Harper Trucks, Inc.Inventors: John J. Stallbaumer, Robert D. Rahn
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Patent number: 5749588Abstract: A two-wheeled hand truck comprising a pair of side frames molded from highstrength plastic formed in an open truss with compression and tensile members. The side frames are held in a rigid parallel relationship to each other by cross rails, handles and a toe plate with integral stiffeners attached to the side frames.Type: GrantFiled: July 29, 1996Date of Patent: May 12, 1998Assignee: Harper Trucks, Inc.Inventor: John J. Stallbaumer
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Patent number: D395105Type: GrantFiled: February 28, 1997Date of Patent: June 9, 1998Assignee: Harper Trucks, Inc.Inventor: John J. Stallbaumer