Polymeric External Gear Pump for Hot Cooking Oil

A deep fryer pump, the pump comprising:

• a thermoplastic casing comprising a through bore for accommodating a drive shaft and a pump chamber for accommodating a drive gear and a driven gear, the thermoplastic casing being coupled to a stationary pin, the thermoplastic casing further comprising a proximal end coupled to a motor and a distal end coupled to a thermoplastic head,
• the gears enclosed in the pump chamber by the thermoplastic head,
• the stationary pin coupled to the driven gear, the drive shaft coupled to the drive gear,
• the thermoplastic head consisting essentially of a plate with a plurality of holes for accommodating fasteners that couple the thermoplastic head to the distal end of the thermoplastic casing.

A deep fryer pump, the pump consisting essentially of:

• a casing consisting essentially of
• a through bore for accommodating a drive shaft, a pump chamber for accommodating a drive gear and a driven gear,
• a recess connected to the pump chamber for accommodating a stationary pin,
• a proximal end coupled to a motor, a distal end coupled to a thermoplastic head, and
• a groove that encircles the pump chamber for accommodating a seal that is sandwiched between the distal end of the thermoplastic casing and the thermoplastic head,
• the gears enclosed in the pump chamber by the thermoplastic head, the stationary pin coupled to the driven gear, the drive shaft coupled to the drive gear,
• the thermoplastic head consisting essentially of a plate with a plurality of holes for accommodating fasteners that couple the thermoplastic head to the distal end of the thermoplastic casing, and
• the through bore comprises a distal end connected to the pump chamber and a proximal end connected to the proximal end of the thermoplastic casing, the proximal end of the through bore being recessed to accommodate a seal through which the drive shaft passes