Street sweeper recirculation flap
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 21, 2009
Grant Date -
Mar 11, 2004
app pub date -
Sep 6, 2002
filing date -
Sep 6, 2002
priority date (Note) -
In Force
status (Latency Note)
![]() |
A preliminary load of PAIR data current through [] has been loaded. Any more recent PAIR data will be loaded within twenty-four hours. |
PAIR data current through []
A preliminary load of cached data will be loaded soon.
Any more recent PAIR data will be loaded within twenty-four hours.
![]() |
Next PAIR Update Scheduled on [ ] |

Importance

US Family Size
|
Non-US Coverage
|
Patent Longevity
|
Forward Citations
|
Abstract
A street sweeper system is used typically in a motorized vehicle. The sweeper utilizes a cylindrical brush rotating about an axis generally perpendicular to the vehicle's direction of motion. A conveyor belt catches debris thrown forwards and upward by the brush and moves the debris to a hopper. A recirculation flap is mounted contacting a lower rear portion of the brush. The recirculation flap deflects debris that has traveled over the top of the brush back into the brush to be recollected at the conveyor.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
CURBTENDER INC | 701 PERFORMANCE DRIVE CEDAR FALLS IA 50613 |
International Classification(s)

- 2002 Application Filing Year
- E01H Class
- 92 Applications Filed
- 31 Patents Issued To-Date
- 33.70 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Engel, Gregory J | Plymouth, US | 13 | 208 |
# of filed Patents : 13 Total Citations : 208 | |||
Wilmo, Michael S | Crystal, US | 14 | 188 |
# of filed Patents : 14 Total Citations : 188 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 7 Citation Count
- E01H Class
- 0 % this patent is cited more than
- 16 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

Legal Events
Date | Code | Event | Description |
---|---|---|---|
Jul 31, 2023 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 8TH YR, SMALL ENTITY (ORIGINAL EVENT CODE: M2552); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY year of fee payment: 8 |
Aug 01, 2019 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 4TH YR, SMALL ENTITY (ORIGINAL EVENT CODE: M2551); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY year of fee payment: 4 |
Feb 02, 2016 | I | Issuance | |
Jan 13, 2016 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Dec 10, 2015 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HOWLAND, CHARLES A;HOWLAND, VIRGINIA HOUSTON;REEL/FRAME:037349/0350 Owner name: WARWICK MILLS INC., NEW HAMPSHIRE Effective Date: Dec 10, 2015 |
Mar 26, 2015 | P | Published | |
Sep 26, 2014 | F | Filing | |
Sep 26, 2013 | PD | Priority Date |

Matter Detail

Renewals Detail
