Patent ID: 7240909

Claim:
A paint pump cart assembly comprising: a) a paint pump frame having at least one upwardly projecting standtube; b) a handle having at least one downwardly projecting handle extension received in the standtube; c) a standtube knob at an intersection of the standtube and handle extension, the knob having: i) at least a limited range of rotational movement with respect to the standtube, ii) at least one internal ramp movable with respect to the handle extension; d) a standtube bushing supporting and retaining the standtube knob while permitting the rotational movement of the knob with respect to the standtube; and e) a resiliently mounted projection located internal to the handle extension and movable between i) a locking position wherein the handle extension is maintained in an extended position with respect to the standtube, and ii) a released position wherein the handle extension is allowed to telescope into the standtube towards a storage position, wherein the internal ramp of the standtube knob moves the resiliently mounted projection between the locking position and the released position in response to the rotational movement of the standtube knob with respect to the standtube.