Title:
VANE SLOT ROLLER ASSEMBLY FOR ROTARY VANE PUMPING MACHINE AND METHOD FOR INSTALLING SAME
Document Type and Number:
WIPO Patent Application WO2000026507
Kind Code:
A9
Abstract:
A vane slot assembly and installation method for a rotary vane pumping machine including a rotor (100) with a rotor axis of rotation. The rotor (100) has a vane slot (130) with two opposing, azuimuthally separated, slot side walls (138a and 138b). The rotor (100) has a primary slot gear rack (129) disposed radially along a first slot side wall. A radially reciprocating vane is movably disposed between the slot side walls. The vane (120) §& has side walls (128a and 128b) facing the slot side walls (138a and 138b), and has a primary vane gear rack (129) disposed radially along a first vane side wall (128a and 128b) facing the first slot side wall (138a and 138b). A plurality of vane slot rollers (135) are movably disposed between the first slot side wall and the first vane side wall. The rollers (133) have axes of rotation substantially parallel to the rotor axis and include an aligned roller (132) having a primary roller gear (133). The primary roller gear (133) engages the primary vane gear rack (136) and the primary slot gear rack (136b). As a result, friction-reducing roller bearings between the vane (120) and the rotor slot (130) are properly aligned radially.
Inventors:
MALLEN BRIAN D (US)
Application Number:
PCT/US1999/026097
Publication Date:
November 23, 2000
Filing Date:
November 04, 1999
Export Citation:
Assignee:
MALLEN BRIAN D (US)
International Classes:
F01C1/344; F01C21/08; (IPC1-7): F01C21/00
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