Sweeper hood with transverse air duct and broom compartments
Patent 4110864 Issued on September 5, 1978. Estimated Expiration Date: 
September 26, 1997. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 26, 1997. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 514678 2913744 3189932 3605170 3808632 Sweeper pickup hood with air lock Patent #: 4044422 InventorAssigneeApplicationNo. 05/836647 filed on 09/26/1977US Classes:15/346, Closed circuit systems, i.e., air recirculating15/383Rotary agitatorExaminersPrimary: Moore, Christopher K.Attorney, Agent or FirmInternational ClassesE01H 1/08 (20060101)E01H 1/00 (20060101) AbstractA street sweeper hood has a transverse main compartment with an intermediate transverse partition that stops short of the swept surface and divides the main compartment into a front transverse air duct compartment and a rear broom compartment. Air and debris enter an inlet port at the curb end of the air duct and are withdrawn at the opposite end by a blower, the stream of air and entrained debris being accelerated along the air duct by an inclined top plate. A flexible scoop at the curb side of the inlet port and a windrower at the opposite side deflect debris into a tunnel that forms the inlet port. | |
