Apparatus for indicating remaining life expectancy of a...

Rotary expansible chamber devices – With signal – indicator or transparent inspection means

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C418S180000, C418S268000

Reexamination Certificate

active

06877966

ABSTRACT:
The present invention is directed to an apparatus for determining vane wear in rotary sliding vane pumps that operate using slideable vanes, while the pump is in operation. The invention includes a structure that allows a predetermined amount of leakage from a pumping chamber after a predetermined amount of vane length is worn away. The leakage produces a decrease in pump efficiency that is indicated by an indicating device. The indicating device serves to warn that an amount of vane wear has occurred that indicates pump inspection is warranted. The invention also includes a view port formed in the pump housing to allow inspection of the vanes without having to disassemble the pump.

REFERENCES:
patent: 706158 (1902-08-01), Charles
patent: 2781000 (1957-02-01), Thomas et al.
patent: 3036527 (1962-05-01), Peterson
patent: 3102493 (1963-09-01), Davin
patent: 3191852 (1965-06-01), Kaatz et al.
patent: 3301194 (1967-01-01), Brunson
patent: 3398884 (1968-08-01), Kaatz et al.
patent: 3463384 (1969-08-01), Kilbane
patent: 3469500 (1969-09-01), Lutz et al.
patent: 3552895 (1971-01-01), Bayley
patent: 3565558 (1971-02-01), Tobacman
patent: 4804317 (1989-02-01), Smart et al.
patent: 4820140 (1989-04-01), Bishop
patent: 5318409 (1994-06-01), London et al.
patent: 5720598 (1998-02-01), de Chizzelle
patent: 6318147 (2001-11-01), Steinruck et al.
patent: 6368066 (2002-04-01), Aiyama et al.
patent: 53868 (1912-06-01), None
patent: 626762 (1991-10-01), None
patent: 3321380 (1984-12-01), None
patent: 2596107 (1987-09-01), None
Fruitland Tool and MFG., Fruitland Vacuum Pump Operation and Maintenance Manual, Stoney Creek, ON, Canada, including drawings dated 1978 to 2002. Accessed at www.fruitland-mfg.co on Sep. 9, 2003. See p. 5.
Mannesmann-Demag, Instruction Manual and Spare Parts List for Air-Cooled Rotary Compressors and Vacuum Pumps, Nr. BE 10/1982/3US, 1982, Schopfheim, Germany. See p. 14.
Blackmer, Blackmer Rotary Vane Compressors Installation, Operation and Maintenance Instructions, Model:E56, E106, E156, Oct. 1999, Grand Rapids, MI, USA. See pp. 7-8.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Apparatus for indicating remaining life expectancy of a... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for indicating remaining life expectancy of a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for indicating remaining life expectancy of a... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3375843

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.