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US 10,788,245 B2Granted
Refrigerant recovery pump with an improved input port
AssigneeFieldpiece Instruments, Inc.
InventorsTinggui Hong, Jason Corbett Gilley, David M. Hines
Life of this patent
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Abstract
A refrigerant recovery system includes a direct current (DC) motor and digital display and controls enabling an automatic self-test mode to insure proper operation prior to starting to service an HVAC system and a maintenance assist mode to diagnose and suggest maintenance for optimum performance of the refrigerant recovery system.
Claims6
A refrigerant recovery system comprising:
- a direct current (DC) motor;
- a refrigerant pump operably connected to the DC motor, the refrigerant pump having at least an input port and an output port;
- an input connector with a shoulder, the input connector operably engaged to the input port;
- an input nipple having a lock nut, the input nipple operably engaged to the input connector with the lock nut oriented to frictionally engage the input connector shoulder;
- and
- a mesh filter and an O-ring secured between the input nipple and the input connector.
3 more elements
Dependencies are inferred from the claim text.