Rotary cutter for mowers
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 19, 1988
Grant Date -
N/A
app pub date -
May 28, 1986
filing date -
Apr 22, 1986
priority date (Note) -
Expired
status (Latency Note)
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Importance

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Abstract
A rotary cutter head for use with a rotating filament trimmer in which a reel for winding cords or filaments is held between a housing covering a lower portion thereof and a retainer or hub fixed on the driven rotating shaft of the trimmer unit and is rotatably disposed within the housing. Within the bore of the reel, an axially movable slider is normally biased toward the retainer by the elastic force of a spring so that meshing engagement occurs between a peripheral array of axially projecting tongues formed on one end of the slider and a plurality of radial teeth-like ribs formed on the inner side of the retainer and establishes a driving connection to rotate the reels. By applying an axial impact against the housing, the slider is moved axially by inertial forces against the biasing force of the spring to release that engagement, and axially projecting detent fingers formed around the other end of the slider press against the opposed slopes of a circular rib formed on the inner side of the housing and bring about both positive relative rotation of the reel and fix a limit to such rotation to a predetermined amount thereby to play out a limited length of fresh cords. In order that the reel may rotate in an opposite direction to rewind the cords, moreover, the radial ribs formed on the retainer and the tongues of the slider are formed with opposed cooperating cam slopes which force the slider axially until the tongues are clear of the ribs during backward rotation.
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 | |
---|---|---|
STARTING INDUSTRY COMPANY LIMITED 4-4-4 MOMOI SUGINAMI-KU TOKYO JAPAN | Not Provided |
International Classification(s)

- 1986 Application Filing Year
- A01D Class
- 172 Applications Filed
- 1 Patents Issued To-Date
- 0.59 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Nishio, Tadashi | Tokyo, JP | 15 | 173 |
# of filed Patents : 15 Total Citations : 173 | |||
Osakabe, Mitsuo | Tokyo, JP | 7 | 70 |
# of filed Patents : 7 Total Citations : 70 | |||
Shimizu, Keizo | Tokyo, JP | 17 | 147 |
# of filed Patents : 17 Total Citations : 147 | |||
Sonoda, Akihiro | Tokyo, JP | 6 | 31 |
# of filed Patents : 6 Total Citations : 31 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 14 Citation Count
- A01D Class
- 0 % this patent is cited more than
- 37 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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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 |
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Nov 08, 2021 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY |
Nov 08, 2021 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Oct 06, 2021 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Oct 06, 2021 |
May 24, 2021 | FEPP | FEE PAYMENT PROCEDURE | free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY |
May 11, 2017 | FPAY | FEE PAYMENT | year of fee payment: 8 |
May 11, 2017 | SULP | SURCHARGE FOR LATE PAYMENT | year of fee payment: 7 |
May 22, 2013 | SULP | SURCHARGE FOR LATE PAYMENT | |
May 22, 2013 | FPAY | FEE PAYMENT | year of fee payment: 4 |
May 17, 2013 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Sep 07, 2010 | CC | CERTIFICATE OF CORRECTION | |
Oct 06, 2009 | I | Issuance | |
Sep 16, 2009 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Oct 26, 2007 | AS� | SECURITY INTEREST | free format text: SECURITY AGREEMENT;ASSIGNOR:SMARTER AGENT, LLC;REEL/FRAME:020064/0123 Owner name: SOVEREIGN BANK, PENNSYLVANIA Effective Date: Oct 26, 2007 |
Oct 26, 2007 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SMARTER AGENT, INC.;REEL/FRAME:020024/0532 Owner name: SMARTER AGENT, LLC, NEW JERSEY Effective Date: Oct 26, 2007 |
Oct 01, 2007 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BLUMBERG, ERIC;BLUMBERG, BRAD;REEL/FRAME:020018/0796 Owner name: SMARTER AGENT, INC., NEW JERSEY Effective Date: Oct 01, 2007 |
Oct 14, 2005 | F | Filing | |
Feb 29, 2000 | PD | Priority Date |

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