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US 2013/0075678 A1Published application
Low profile jack
AssigneeQuantum Engineered Products, Inc.
InventorsJoseph W. Kozora, Michael J. Albert, Travis R. McDougal
Life of this patent
Estimating the term…
Abstract
A jack assembly includes a dual threaded screw with a right-hand-threaded section and a left-hand-threaded section. A first drive member mates with the right-hand-threaded section, and a second drive member mates with the left-hand-threaded section. The drive members drive an extendible platform that moves to an extended position when the screw is moved in a first direction, or a retracted position when the screw is moved in a second, opposite direction.
Claims21
A jack assembly, comprising:
- a dual threaded screw comprising a right-handed section having a right-hand thread and a left-handed section having a left-hand thread;
- a first drive member having an internal thread that mates with the right-hand thread of the screw;
- a second drive member having an internal thread that mates with the right-hand thread of the screw;
- and
- an extendible platform that is pivotably related to the first drive member and the second drive member and configured so that when the screw is rotated in a first direction, the drive members move toward each other and the platform moves to an extended position, and when the screw is rotated in a second direction the drive members move away from each other and the platform moves to a retracted position.
2 more elements
A jack assembly, comprising:
- a dual threaded screw comprising a right-handed section having a right-hand thread and a left-handed section having a left-hand thread;
- a first drive member having an internal thread that mates with the right-hand thread of the screw;
- a second drive member having an internal thread that mates with the right-hand thread of the screw;
- a frame configured to support the screw, the first drive member and the second drive member;
- and
- an extendible platform comprising:
- a first side wall that is pivotably connected to the first drive member, and
- a second side wall that is pivotably connected to the second drive member,
- wherein the extendible platform that is attached to the first drive member and the second drive member and configured so that when the screw is rotated in a first direction, the drive members move toward each other and the platform is in an extended position, and when the screw is rotated in a second direction, the drive members move away from each other and the platform is in a retracted position.
6 more elements
A jack assembly, comprising:
- a dual threaded screw having an Acme thread form and comprising a right-handed section having a right-hand thread and a left-handed section having a left-hand thread;
- a first drive member having an internal thread that mates with the right-hand thread of the screw;
- a second drive member having an internal thread that mates with the right-hand thread of the screw;
- a frame configured to support the screw, the first drive member and the second drive member;
- and
- an extendible platform comprising:
- a first side wall that is pivotably connected to the first drive member,
- a second side wall that is pivotably connected to the second drive member,
- a support surface positioned between the first side wall and the second side wall,
- a third hinge that connects the support surface to the first side wall, and
- a fourth hinge that connects the support surface to the second side wall;
- wherein the extendible platform that is attached to the first drive member and the second drive member and configured so that when the screw is rotated in a first direction, the drive members move toward each other and the platform is in an extended position, and when the screw is rotated in a second direction, the drive members move away from each other and the platform is in a retracted position.
9 more elements
Dependencies are inferred from the claim text.