Title:
DOUBLE-HELICAL GEAR ROTARY POSITIVE DISPLACEMENT PUMP
Document Type and Number:
WIPO Patent Application WO/2013/011535
Kind Code:
A3
Abstract:
The invention relates to a double-helical gear rotary positive displacement pump comprising a pump housing (14) rotatably supporting at least a driving shaft (2) and at least a driven shaft (3), at least a first toothing (4) and a second toothing (5) being associated to said driving shaft (2) and at least a third toothing (6) and a fourth toothing (7) being associated to said driven shaft (2). The toothings (4, 5, 6, 7) have individually a helical profile that allows their mutual herringbone meshing. Three of toothings (4, 5, 6) are rigidly connected to their respective shafts (2, 3): the fourth toothing (7), or other suitable one, is idle on the shaft and axially constrained.
Inventors:
MORSELLI MARIO ANTONIO (IT)
Application Number:
PCT/IT2012/000224
Publication Date:
January 23, 2014
Filing Date:
July 19, 2012
Export Citation:
Assignee:
MORSELLI MARIO ANTONIO (IT)
International Classes:
F04C2/16
Foreign References:
| GB559729A | 1944-03-02 | |||
| US2319374A | 1943-05-18 | |||
| GB119130A | 1918-09-26 | |||
| DE1104262B | 1961-04-06 |
Attorney, Agent or Firm:
CICCARELLO, Basilio (Largo Appio Claudio 395, Roma, IT)
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