Mechanical pumps
AssigneeThe BOC Group, Inc.
InventorHenryk Wycliffe
Life of this patent
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Abstract
A mechanical pump includes a pumping chamber through which extends a pair of parallel shafts 3. Each shaft 3 carries in tandem rotors 4, 5 and 6 at least two of which are the intermeshing "claw" type. The rotors are arranged in complementary pairs and each pair occupies a separate location in the pumping chamber. Each "claw" type rotor 6 of a complementary pair in one location is mounted on its shaft 3 in reverse orientation to the "claw" type rotors 5 of the complementary pairs in the adjacent location.
Claims9
A mechanical pump comprising a pumping chamber having an inlet and an outlet for the passage therethrough of a compressable fluid to be compressed and pumped;
- a pair of parallel shafts extending through the pumping chamber, each shaft supporting for rotary movement therewith in tandem at least two rotors of the intermeshing "claw" type, each rotor forming one of a complementary pair, each complementary pair occupying an individual location in the pumping chamber, adjacent locations being separated by a partition having an opening which permits the passage of the compressable fluid directly from one location to the next adjacent location, each rotor of the complementary pair in one location being mounted on its shaft in reverse orientation to the rotors of the complementary pair in the adjacent location.
Dependencies are inferred from the claim text.