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US 6,908,087 B2Granted
Mobile load carrier with castor mounting arrangement
AssigneeDynamic Products, Inc.
InventorsStephen Wintersgill, John Robinson
Life of this patent
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AssigneeDynamic Products, Inc.
InventorsStephen Wintersgill, John Robinson
Estimating the term…
A mobile load carrier comprises a castor mounting arrangement comprising two or swivellable castors mounted on a first member (7), characterized in that said first member (7) is rotatably attached to a second member or member (5), along a fixed, substantially horizontal axis (6) substantially perpendicular to the primary direction of travel of the mobile load carrier, said second member(s) (7) being attached to, or forming part of, the structure of the mobile load carrier, such that any movement of the castors' swivel axes, relative to the chassis, is synchronous, with movement only being possible via the rotatable attachment of the first member (7) to the second member(s) (5). Preferably the rotation is load dependent with the load dependency optionally being provided by one or more biasing members (10).
A mobile load carrier comprising a load carrying portion and a castor mounting arrangement, the arrangement comprising a first member on which two or more castors are rotationally mounted, each castor being rotatable about a substantially upright swivel axis, and a second member fixed to, or forming part of, the load carrying portion, the second member being rotationally connected to the first member, characterised in that significant movement of the first member relative to the second member is restricted to rotation about a substantially horizontal axis of rotation which is transverse to a primary direction of travel of the mobile load carrier, the rotation effecting synchronous tilting of the swivel axes of the castors.
A castor mounting arrangement for attachment to a mobile load carrier, the arrangement comprising a first member on which two or more castors are rotationally mounted, each castor being rotatable about a substantially upright swivel axis, and a second member for fixed attachment to the mobile load carrier, the second member is rotationally connected to the first member characterised in that significant movement of the first member relative to the second member restricted to rotation about a substantially horizontal rotational axis which is transverse to a primary direction of travel of the mobile load carrier, the rotation of the first member relative to the second member effecting synchronous tilting of the swivel axes of the castors.
A mobile load carrier intended to have a primary direction of travel, the carrier comprising a load carrying portion and a castor mounting assembly, the assembly comprising:
Dependencies are inferred from the claim text.