WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |
PATENTSCOPE

Search International and National Patent Collections
World Intellectual Property Organization
Search
 
Browse
 
Translate
 
Options
 
News
 
Login
 
Help
 
Machine translation
1. (WO1980000174) GEAR PUMP HAVING FLUID DEAERATION CAPABILITY
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/000174    International Application No.:    PCT/US1979/000141
Publication Date: 07.02.1980 International Filing Date: 07.03.1979
IPC:
F04C 2/08 (2006.01)
Applicants:
Inventors:
Priority Data:
918123 22.06.1978 US
Title (EN) GEAR PUMP HAVING FLUID DEAERATION CAPABILITY
(FR) POMPE A ENGRENAGE AVEC DESAERATION DE FLUIDES
Abstract: front page image
(EN)A gear pump (10) has a pair of intermeshing gears (12, 14) located in a corresponding pair of intersecting cavities (16, 18) in a housing (20), and air bleed passages (60) are defined in the housing (20) for passing entrained air collected in the fluid at the tooth roots (42) of the gears (12, 14) as a result of centrifugal force away from a preselected region (61, 62) of each of the gear cavities (16, 18). Preferably, a pair of arcuate air bleed passages (64) are formed in the housing (20) and are located in a trailing portion (62) of the preselected region, and a pair of grooves (70) transmit pressure from a discharge opening (48) back to the tooth roots (42) to positively encourage movement of fluid with entrained air toward the arcuate air bleed passages (64).
(FR)Une pompe a engrenage (10) possede une paire d"engrenages en prise (12, 14) logee dans une paire correspondante de cavites (16, 18) d"un carter (20), et des passages de purge d"air (60) sont definis dans le carter (20) pour le passage d"air entraine recupere dans le fluide au niveau des racines des dents (42) des engrenages (12, 14) sous l"influence d"une force centrifuge a partir d"une region preselectionnee (61, 62) de chacune des cavites des engrenages (16, 18). De preference, une paire de passages de purge d"air en forme d"arc (64) sont formes dans le carter (20) et sont situes dans une partie de fluide (62) de la region preselectionnee, et une paire de rainures (70) transmet la pression d"une ouverture de decharge (48) aux racines des dents (42) pour favoriser le mouvement du fluide avec l"air entraine vers les passages arques de purge d"air (64).
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)