Patent ID: 6843349

Claim:
A trolley wheel mechanism comprising at least one caster wheel, a user actuator, a brake mechanism for applying a brake to the at least one castor wheel according to user control of the user actuator, and a retainer mechanism for retaining the at least one castor wheel in an in-line position in response to user control of the user actuator, the user actuator comprises an apply actuator and a release actuator, the apply actuator and the release actuator being movable independent of each other, the brake mechanism applying a brake to the at least one castor wheel in response to a user input on only the apply actuator and releasing the brake in response to a user input on only the release actuator, the retainer mechanism retaining the at least one castor wheel in the in-line position in response to simultaneous user inputs on both the apply actuator and the release actuator.