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US 12,472,773 B2Granted
Caster assemblies having cam-operated brakes
AssigneeThe Boeing Company
InventorsMatthew James Frizzell, Richard Kurt Wagner, Joseph Edward Flach
Life of this patent
Estimating the term…
Abstract
Caster assemblies are disclosed herein. An example caster assembly includes a caster frame assembly including a caster frame, a caster mounting plate, and a brake arm; a pin having a first end and a second end opposite the first end, the second end to engage the brake arm; and a lever arm having a third end and a fourth end opposite the third end, the lever arm to pivot relative to the caster frame assembly between a first position and a second position, movement of the lever arm to the first position to cause the fourth end of the lever arm to actuate the pin in a first direction to move the brake arm to the engaged position to restrict rotation of the wheel.
Claims20
A caster assembly comprising:
- a caster frame assembly including a caster frame, and a caster mounting plate, the caster frame rotatably coupled to the caster mounting plate to enable a wheel to swivel relative to the caster mounting plate, the caster frame assembly including a swivel lock adjustable between an unlocked condition to enable the wheel to swivel relative to the mounting plate and a lock condition to prevent the wheel from swiveling relative to the mounting plate, the caster assembly including a wheel lock that operates independently from the swivel lock, the wheel lock including:
- a brake arm rotatably coupled to the caster frame, the brake arm to engage the wheel when the brake arm is in an engaged position;
- a pin having a first end and a second end opposite the first end, the second end to engage the brake arm;
- and
- a lever arm having a third end and a fourth end opposite the third end, the lever arm to pivot relative to the caster frame assembly between a first position and a second position, movement of the lever arm to the first position to cause the fourth end of the lever arm to actuate the pin in a first direction to move the brake arm to the engaged position to restrict rotation of the wheel, movement of the lever arm to the second position to cause the fourth end of the lever arm to actuate the pin in a second direction to move the brake arm to a released position to enable rotation of the wheel, the second direction opposite the first direction.
2 more elements
A caster assembly comprising:
- a caster frame assembly including a caster frame, a caster mounting plate, and a brake arm, the caster frame rotatably coupled to the caster mounting plate to enable a wheel to swivel relative to the caster mounting plate, the brake arm rotatably coupled to the caster frame, the brake arm to engage the wheel when the brake arm is in an engaged position;
- a pin having a first end and a second end opposite the first end, the second end to engage the brake arm;
- and
- a lever arm having a third end and a fourth end opposite the third end, the lever arm to pivot relative to the caster frame assembly between a first position and a second position, the lever arm includes a base portion defining the fourth end and a handle portion defining the third end, the handle portion oriented at an angle relative to the base portion, the angle being between 25 degrees and 35 degrees.
1 more element
A transport dolly comprising:
- a dolly frame;
- and
- a plurality of caster assemblies, the caster assemblies each including:
- a wheel;
- a caster frame assembly including a caster mounting plate, a caster frame and a brake arm, the wheel coupled to the caster frame, the brake arm rotatably coupled to the caster frame, the brake arm to rotate between an engaged position and a released position, the brake arm to engage the wheel when in the engaged position to restrict rotation of the wheel relative to the caster frame, the brake arm to disengage the wheel when in the released position to enable rotation of the wheel relative to the caster frame;
- a first pin having a first end extending at least partially through the dolly frame and a second end opposite the first end extending at least partially through the caster frame;
- a lever arm rotatably coupled to the dolly frame, the lever arm including a handle and a cam, the lever arm to move the brake arm between an engaged position to restrict rotation of the wheel relative to the dolly frame and a released position to enable rotation of the wheel relative to the dolly frame via the cam and the first pin when the lever arm is rotated relative to the dolly frame;
- a first sleeve to couple to the caster mounting plate;
- a second sleeve to couple to the caster frame;
- and
- a second pin to couple to the first sleeve and the second sleeve when the first sleeve is radially aligned with the second sleeve, the second pin to fix a swivel position of the wheel when the second pin is coupled to the first sleeve and the second sleeve.
8 more elements
Dependencies are inferred from the claim text.