Vertically Adjustable Automatic Step Stool
OwnerJerry Dean Worleyinventor
Life of this patent
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Abstract
A step stool includes an inner frame, an outer frame, an actuator, and a coupler. The inner frame includes two inner pillars, and the outer frame includes two outer pillars attached to a platform near opposite ends of the platform and configured to receive the two inner pillars. The actuator is coupled to one of the two inner pillars and one of the two outer pillars, and is operable to raise the outer frame relative to the inner frame. The coupler couples the two outer pillars to each other to evenly lift the opposite ends of the platform when the actuator raises the outer frame.
Claims20
A step stool, comprising:
- an inner frame including two inner pillars;
- an outer frame including two outer pillars attached to a platform near opposite ends of the platform and configured to receive the two inner pillars;
- an actuator coupled to one of the two inner pillars and one of the two outer pillars, and operable to raise the outer frame relative to the inner frame;
- and
- a coupler that couples the two outer pillars to each other to evenly lift the opposite ends of the platform when the actuator raises the outer frame.
A step stool, comprising:
- an inner frame including a single inner pillar;
- an outer frame including a single outer pillar attached to a platform near a first end of the platform and configured to receive the inner pillar;
- an actuator coupled to the inner pillar and the outer pillar, and operable to raise the outer frame relative to the inner frame;
- and
- a coupler that couples the outer pillar and a second end of the platform to evenly lift the first end of the platform and the second end of the platform opposite the first end of the platform when the actuator raises the outer frame.
A step stool, comprising:
- an inner frame including two inner pillars;
- an outer frame including two outer pillars attached to a platform near opposite ends of the platform and configured to receive the two inner pillars;
- an actuator coupled to one of the two inner pillars and one of the two outer pillars, and operable to raise the outer frame relative to the inner frame;
- a slide mechanism including a first bracket, a second bracket, and a bearing ball, the first bracket mounted to the inner frame, the second bracket mounted to the outer frame, and the bearing ball positioned between the first bracket and the second bracket;
- and
- a chain and sprocket mechanism that couples the two outer pillars to each other to evenly lift the opposite ends of the platform when the actuator raises the outer frame.
Dependencies are inferred from the claim text.