Adjustable creeper
AssigneeT&L Design, LLC
InventorsJoel Hendrickson, Travis Hendrickson
Life of this patent
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Abstract
An apparatus can include a seat, a backrest, a base frame comprising wheels and an adjustment assembly. The adjustment assembly can be adjustable from a lowered position to a raised position. The adjustment assembly can include an actuator assembly, pairs of scissor legs, and a connector. The actuator assembly can include: an actuator positioned underneath the seat, where the actuator comprises an actuatable shaft; and biasers positioned underneath the backrest. In addition, the connector can be attached to the pairs of scissor legs and the actuatable shaft, the connector being configured to: compress the biasers upon extension of the actuatable shaft away from actuator; and decompress the biasers upon retraction of the actuatable shaft towards the actuator.
Claims20
An adjustable creeper, comprising:
- a seat comprising a seat support member with a cam surface;
- a backrest;
- a base frame comprising:
- four wheels;
- and
- a movable axle;
- and
- an adjustment assembly comprising a continuous range of adjustment resolution to adjust the seat and the backrest from a lowered position to a raised position, the adjustment assembly comprising:
- an actuator assembly configured for motorized actuation;
- a first pair of legs, comprising:
- a first end connected to the backrest;
- and
- a second end opposite the first end, the second end being rotatably anchored to the base frame;
- and
- a second pair of legs, comprising:
- a first end portion comprising a roller configured to engage the cam surface of the seat support member;
- and
- a second end connected to the movable axle of the base frame.
An apparatus, comprising:
- a seat;
- a backrest;
- a base frame comprising wheels;
- and
- an adjustment assembly adjustable from a lowered position to a raised position, the adjustment assembly comprising:
- an actuator assembly, comprising:
- an actuator positioned underneath the seat, the actuator comprising an actuatable shaft;
- and
- biasers positioned underneath the backrest;
- pairs of scissor legs;
- and
- a connector attached to the pairs of scissor legs and the actuatable shaft, the connector being configured to:
- compress the biasers upon extension of the actuatable shaft away from the actuator;
- and
- decompress the biasers upon retraction of the actuatable shaft towards the actuator.
An apparatus, comprising:
- a seat comprising an articulation mechanism;
- a backrest;
- a base assembly comprising:
- a front portion;
- a back portion;
- and
- a movable axle translatable along the base assembly between the front portion and the back portion;
- an electrically powered actuator assembly, comprising:
- a hydraulic actuator comprising an adjustable shaft;
- a motor;
- a bracket positioned adjacent to each side of at least one of the hydraulic actuator or the motor, the bracket supporting at least one end of the hydraulic actuator or the motor opposite the adjustable shaft;
- a set of support rods connected to the bracket;
- and
- raise-assist members comprising central axes positionally aligned with the set of support rods;
- and
- a support assembly movably attached to the seat, the backrest, the base assembly, and the electrically powered actuator assembly, the support assembly comprising:
- a first pair of support members positioned parallel to each other, each support member of the first pair of support members comprising:
- a first end connected to the backrest;
- and
- a second end opposite the first end, the second end being rotatably connected to the front portion of the base assembly;
- and
- a second pair of support members positioned parallel to each other and forming a scissor connection with the first pair of support members, each support member of the second pair of support members, comprising:
- a first end connected to the bracket;
- and
- a second end connected to the movable axle.
Dependencies are inferred from the claim text.