Sweeper with precleaner and/or demister United States Patent 04557739

04557739 is referenced by 21 patents and cites 10 patents.

This is concerned with a sweeper of the type that has a power operated brush that sweeps debris off of a floor or other surface to be cleaned and throws it into a hopper with a vacuum fan arranged to draw air from the hopper through a filter and exhaust it to the atmosphere. More particularly, the sweeper is provided with a precleaner and/or demister which separates the larger particles, and possibly moisture, from the airstream as it moves through the hopper, thereby protecting and/or aiding the filter.

Title
Sweeper with precleaner and/or demister
Application Number
6/644626
Publication Number
4557739
Application Date
August 27, 1984
Publication Date
December 10, 1985
Inventor
Mark D Kinter
Spring Park
MN, US
Lloyd D Fortman
Minneapolis
MN, US
Agent
Kinzer Plyer Dorn & McEachran
Assignee
Tennant Company
MN, US
IPC
B01D 50/00
View Original Source

Citations: 21 (view full list)

  1. Robert D Hennessey, Timothy G La Rocque: Hopper and filter chamber for direct forward throw sweeper. Tennant Company, Kinzer Plyer Dorn McEachran & Jambor, April 19, 1994: US05303448 (150 worldwide citation)
  2. Steven L Boomgaarden: Scrubber vac-fan seal. Tennant Company, Dorn McEachran Jambor & Keating, August 31, 1999: US05943730 (130 worldwide citation)
  3. Jeffrey J Beaufoy, Robert C Aigner, Steven A Burke: Unattended air cleaning system for surface maintenance machine. Tennant Company, Kinzer Plyer Dorn McEachran & Jambor, May 7, 1991: US05013333 (50 worldwide citation)
  4. Bruce F Field, Daniel L Joynt, Jeffrey A Johnson, Joseph K Krueger, Bryan L Christensen: Cleaner cartridge. Tennant Company, Westman Champlin & Kelly, May 30, 2006: US07051399 (48 worldwide citation)
  5. Mark J Fleigle, Robert A Geyer, Mark D Kinter: Apparatus for cleaning an air filter. Tennant Company, Kinzer Plyer Dorn McEachran & Jambor, November 29, 1988: US04787923 (27 worldwide citation)
  6. Gerhard Langer: Particle impactor assembly for size selective high volume air sampler. The United States of America represented by the United States Department of Energy, Anne D Daniel, James H Chafin, Judson R Hightower, August 16, 1988: US04764186 (26 worldwide citation)
  7. Bruce F Field: Mobile floor cleaner data communication. Tennant Company, Westman Champlin & Kelly P A, April 3, 2007: US07199711 (18 worldwide citation)
  8. Bruce F Field, Joseph L Pouliot: Ultraviolet sanitation device. Tennant Company, Westman Champlin & Kelly P A, October 4, 2011: US08029739 (16 worldwide citation)
  9. D Franklin Howeth: Rotary broom sweeper hopper. Hubbard Thurman Turner & Tucker, November 24, 1987: US04708723 (14 worldwide citation)
  10. Jeffrey J Beaufoy: Means for emptying a filter box. Tennant Company, Kinzer Plyer Dorn McEachran & Jambor, October 19, 1993: US05254146 (12 worldwide citation)

References: 10

  1. Daniel S Cvacho: Coating filter, separator and collector system. Belgium Tool & Die Co, Low & Matthews, September 12, 1978: US04113454 (9 worldwide citation)
  2. Steven G Brandau, Larry D Shinn: Internal combustion engine gas-oil separator. Deere & Company, May 29, 1979: US04156406 (12 worldwide citation)
  3. Paul W Kimzey, Sherman B Frederick: Surface maintenance equipment. Tennant Company, Merchant Gould Smith Edell Welter & Schmidt, February 15, 1983: US04373227 (15 worldwide citation)
  4. Harley E Kroll, Donald L Thomsen: Surface maintenance machine having air recirculation. Tennant Company, Norman P Friederichs, June 10, 1980: US04206530 (17 worldwide citation)
  5. Delao Alexander: Corrugated board paint filter. July 10, 1973: US3744222 (20 worldwide citation)
  6. May, 1901: US675276
  7. March, 1907: US846034
  8. August, 1942: US2292665
  9. December, 1965: US3221358
  10. February, 1967: US3304572