Abstract: A trolley having two castor wheel assemblies mounted to a trolley frame. The castor wheel assemblies are mounted toward a rear of the trolley frame whereas another pair of conventional castors are mounted to the front of the trolley frame. The castor wheel assemblies are not identical insofar as swiveling of the assemblies is limited in a direction inwardly of the trolley only. It has been found that limited swiveling of one of the castor wheel assemblies only such as at an offset angle provides more efficient guided steering of the trolley.
Type:
Grant
Filed:
March 12, 2013
Date of Patent:
August 23, 2016
Assignee:
INAUTEC PTY LIMITED
Inventors:
Graham Lloyd Dull, Clinton Anthony Dull
Abstract: A trolley having two castor wheel assemblies mounted to a trolley frame. The castor wheel assemblies are mounted toward a rear of the trolley frame whereas another pair of conventional castors are mounted to the front of the trolley frame. The castor wheel assemblies are not identical insofar as swiveling of the assemblies is limited in a direction inwardly of the trolley only. It has been found that limited swiveling of one of the castor wheel assemblies only such as at an offset angle provides more efficient guided steering of the trolley.
Type:
Application
Filed:
March 12, 2013
Publication date:
October 22, 2015
Applicant:
INAUTEC PTY LIMITED
Inventors:
Graham Lloyd DULL, Clinton Anthony DULL
Abstract: A castor wheel assembly on the underside of a shopping trolley comprises a wheel mounted to a wheel mount and rotatable about its rotational axis. A locking device including an engagement element and an actuator element is operatively coupled to the wheel mount for releasably engaging a locking element of the wheel mount to restrict swivelling of the wheel about a swivel axis of the wheel mount. The wheel is freely rotatable about the swivel axis when reversely rotated. Reverse rotation of the wheel urges the actuator element into pressing engagement with the wheel, driving the coupling portion of the engagement element away from the periphery of the wheel for disengagement of the engagement element from the locking element. Engagement of the engagement element and the locking element is only effected when the wheel is forwardly rotated to reduce the pressing engagement.
Type:
Grant
Filed:
May 3, 2005
Date of Patent:
December 20, 2011
Assignee:
Inautec Pty Limited
Inventors:
Graham Dull, Clinton Anthony Dull, Mathew Keith Trainor