Sealing and pumping means and methods environmentally leak-proof pump with misting chamber defined therein
US5340273A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 4, 1993 |
| Grant date | Aug 23, 1994 |
| Priority date | — |
| Expiry date | Aug 4, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2213/09
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An environmentally leak-proof pump is provided including: an environmentally leak-proof motor housing having located therein a motor for rotatably driving a rotating shaft; a piston seal axially forward of the motor; and an oil misting chamber disposed between the motor and the piston seal, the misting chamber for simultaneously providing lubrication to two coaxially disposed spaced apart bearings. The oil mister (34) includes a dispenser (260) fixed to a rotating shaft (23), the dispenser having a plurality of nozzles formed by bores (262 and 263) on opposing sides of the dispenser body. Each bore communicates with a passageway (264) thus allowing each nozzle to continuously direct a flow of lubricating liquid or mist toward adjacent bearings (35 and 36).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.