Harvesters – Motorized harvester – Including driven air-blower unit
Reexamination Certificate
2001-03-13
2002-11-26
Pezzuto, Robert E. (Department: 3671)
Harvesters
Motorized harvester
Including driven air-blower unit
C056S016700, C015S415100
Reexamination Certificate
active
06484483
ABSTRACT:
GENERAL DESCRIPTION
This invention relates to a lawn sweeper and bagger in which the bags are mounted in front of the suction-blower motor assembly and includes means in the leaf pick-up which creates a Bernoulli Effect by positioning a wedge of diamond shape to increase the speed of the materials moving into the suction-blower motor assembly for more effective debris pickup.
HISTORICAL BACKGROUND
In the past, a number of devices have been developed for removing debris from lawns and the like. Lucas U.S. Pat. No. 2,436,011 provided a vacuum pickup which mulched or pulverized the leaves.
Eten U.S. Pat. No. 2,700,863 discloses a device which will pick up the debris and incinerate the debris. Similarly, Boyer U.S. Pat. No. 2,905,963 incinerates but also provides means for collecting the material into a bag.
A number of early developments involve mulching of the material including Gregory U.S. Pat. No. 2,538,643 and Judkins U.S. Pat. No. 2,984,961 who can mulch or bag as desired.
Bag pickup devices are shown in Evanson U.S. Pat. No. 2,930,068 and Nelson U.S. Pat. No. 1,844,785. Nelson is a cotton picker device with more than one nozzle.
Blowers for blowing the leaves in one direction are common and a carrier for such a blower is noted in Zappia U.S. Pat. No. 5,119,619. Hand U.S. Pat. No. 1,483,848 shows the idea of providing a vacuum pickup for cotton which delivers the material into a pair of bags.
Of general interest, also is Finn U.S. Pat. No. 2,990,019.
Where bagging is used, the positioning of the bag has typically been at the rear of the device as generally shown in the patents providing bags. Refer to the above.
OBJECTS AND SUMMARY
It is an object of this invention to provide a lawn sweeper and bagger which positions the bag or bags on the front rather than on the rear of the machine for ease of access.
Yet another object of this invention is to provide a lawn sweeper which will be more efficient in handling the debris coming into the pickup.
Still a further object of this invention is to provide a lawn sweeper and bagger which can be easily and inexpensively manufactured.
Yet a further object of this invention is to provide a lawn sweeper and bagger which requires a minimum of effort during operation of the device.
In summary this invention pertains to a lawn sweeper and bagger which increases the efficiency of the device by utilizing a Bernoulli Effect to increase the pickup capabilities of the device and which also permits handling of the bags more readily by positioning them on the front rather than on the rear of the machine.
REFERENCES:
patent: 929066 (1909-07-01), Williams
patent: 1483848 (1924-02-01), Hand et al.
patent: 1844785 (1932-02-01), Nelson
patent: 2436011 (1948-02-01), Lucas
patent: 2534189 (1950-12-01), Wright
patent: 2538643 (1951-01-01), Gregory
patent: 2700863 (1955-02-01), Etem
patent: 2905963 (1959-09-01), Boyer
patent: 2930068 (1960-03-01), Evanson et al.
patent: 2984961 (1961-05-01), Judkins
patent: 3358315 (1967-12-01), Bennett
patent: 3744653 (1973-07-01), Jensen
patent: 3790986 (1974-02-01), Burger
patent: 3802025 (1974-04-01), Berg
patent: 4475265 (1984-10-01), Berfield
patent: 4564972 (1986-01-01), Varin
patent: 5119619 (1992-06-01), Zappia
patent: 5226757 (1993-07-01), Tarrant
patent: 5245723 (1993-09-01), Sommer
patent: 5685134 (1997-11-01), Thornburg
patent: 5870889 (1999-02-01), Togoshi et al.
patent: 6226970 (2001-05-01), Busboom et al.
Mammen Nathan
Pezzuto Robert E.
Shlesinger & Arkwright & Garvey LLP
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