Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Reexamination Certificate
2011-02-22
2011-02-22
Muller, Bryan R (Department: 3727)
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
C015S340200, C015S340300, C015S340400, C037S231000
Reexamination Certificate
active
07891048
ABSTRACT:
A scraper truck includes a main scraper mounted to a wheeled vehicle and side scrapers pivoted to the main scraper at its ends. The side scrapers are pivotally movable between extended lateral positions where the side scrapers extend outboard of the opposite ends for collecting debris located outboard of the vehicle's width, and a retracted position where the side scrapers are in overlapped juxtaposed storage positions close to and in front of the main scraper. The main scraper has a front face that is concavely shaped. The scraper mount defines a vertical pivot axis and the scraper assembly is rotatable about the vertical pivot axis upon striking an object toward an end of the scraper. A biasing mechanism is provided for biasing the scraper toward a centered forwardly-facing position, and a shear pin is configured to break prior to damage to the scraper or vehicle frame.
REFERENCES:
patent: 1514248 (1924-11-01), Bergman
patent: 1572913 (1926-02-01), Finnell
patent: 2610351 (1952-09-01), Howard
patent: 2876484 (1959-03-01), Wells
patent: 2986826 (1961-06-01), Timmons
patent: 3189932 (1965-06-01), Daneman
patent: 3231991 (1966-02-01), Wandscheer et al.
patent: 3585670 (1971-06-01), MacKinnon
patent: 3634903 (1972-01-01), Larsen
patent: 3722025 (1973-03-01), Gledhill
patent: 4289439 (1981-09-01), Hansson
patent: 5010620 (1991-04-01), Young
patent: 5241763 (1993-09-01), Dynan
patent: 5839157 (1998-11-01), Strauser et al.
patent: 6000647 (1999-12-01), Hardy
patent: 6446298 (2002-09-01), Berg, Jr. et al.
patent: 2006/0236498 (2006-10-01), Nuhn
Muller Bryan R
Price Heneveld Cooper DeWitt & Litton LLP
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