Patent ID: 11913439
Assignee: KING NUTRONICS, LLC
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  G  Y | IPC F  G

Claim 14:
15. The calibration pressure device of claim 14, wherein the volume adjuster comprises:
a volume adjuster housing comprising a first port configured to fluidly connect to the pump and a second port configured to fluidly connect to the manifold;
a primary piston that is threadably engaged with the volume adjuster housing with a primary thread type;
a primary knob coupled with the primary piston;
a secondary piston that is threadably engaged with the primary piston with a secondary thread type, the secondary thread type having a pitch that is less than the pitch of the primary thread type; and
a secondary knob coupled with the secondary piston;
wherein the variable volume chamber is configured to fluidly communicate with the first port and the second port;
wherein the primary piston and the secondary piston together form a movable boundary that partially bounds the variable volume chamber; and
wherein, in response to movement of the primary knob, the primary and secondary pistons move relative to the volume adjuster housing, thereby varying the volume of the variable volume chamber.