Gear pump or motor units with sleeve coupling for shafts

Details Gear pump or motor units with sleeve coupling for shafts Gear pump or motor units with sleeve coupling for shafts

1978-11-24

1981-03-31

Vrablik, John J.

Rotary expansible chamber devices

Interengaging rotating members

Multiple units

418212, 418213, 291564R, 403 6, F03C 208, F04C 218, F04C 1100

Patent

active

042590450

ABSTRACT:
A gear pump or motor wherein at least two pump or gear units are arranged in coaxial relationship and have their axially inwardly extended driven and driving shafts journalled in a common intermediate casing, the driving shafts being splined together with an internally splined sleeve. The inlet port opened in the intermediate casing is communicated through low-pressure passages with the pump chambers of the respective pump or motor units (and with the assembly chamber or pocket formed to accommodate the opposing ends of the axially inwardly extended driving shafts). The diameter of the inlet port is made larger than the size of the sleeve for interconnecting the driving shafts so that the sleeve may be inserted through the inlet opening into the assembly chamber or pocket and interconnect the driving shafts. Thus, in assembly the interconnection between the driving shafts may be much facilitated. Furthermore, the correct axial alignment between them may be ensured because the axially inwardly extended driven and driving shafts are journalled in common holes or bores, respectively.

REFERENCES:
patent: 2750891 (1956-06-01), Berry
patent: 2751846 (1956-06-01), Lapsley
patent: 3101673 (1963-08-01), Clark et al.
patent: 3291052 (1966-12-01), Weaver et al.

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