US Patent No: 7,284,467

Number of patents in Portfolio can not be more than 2000

Apparatus and method for detecting dangerous conditions in power equipment

Stats

ALSO PUBLISHED AS: 20020017336
ATTORNEY / AGENT: (SPONSORED)
 

Importance

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Abstract

Woodworking machines are disclosed having electrically conductive cutting tools adapted to cut workpieces. The machines include a contact detection system capacitively coupled to the cutting tool, and adapted to detect contact between a person and the cutting tool. The machines also include a reaction system configured to cause one or more predetermined actions to take place upon detection of contact between a person and the cutting tool by the contact detection system.

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First Claim

Related Publications

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Patent Owner(s)

Patent OwnerAddressTotal Patents
SD3, LLCWILSONVILLE, OR94

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fulmer, J David Tualatin, OR 87 1843
Gass, Stephen F Wilsonville, OR 203 3776
Jensen, Joel F Redwood City, CA 88 2338

Cited Art

Patent Info (Count) # Cites Year
 
YAMAHA CORPORATION (227)
2003/0023,649 Digital filtering method and device and sound image localizing device 1 2002
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BLACK & DECKER INC. (42)
4,206,910 Table saw fence system 110 1978
4,276,799 Power tool apparatus 86 1979
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4,249,117 Anti-kickback power tool control 104 1979
4,249,442 Elevation setting mechanism for a table saw and the like 80 1979
4,270,427 Bevel angle setting means for a power tool apparatus 77 1980
4,385,539 Articulated dust cover means for table saw or other power-driven apparatus 37 1981
5,094,000 Hand-held power tool with a rotary driven tool 97 1991
5,285,708 Miter saw alignment system 130 1992
5,392,568 Random orbit sander having braking member 92 1993
5,513,548 Chop/table saw with parallelogram arrangement 67 1994
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5,722,308 Movable fence for a machine tool 60 1995
5,724,875 Guard and control apparatuses for sliding compound miter saw 82 1995
5,720,213 Bevel table saw adjustment 40 1995
5,819,619 Dust collection system for compound miter saw 98 1996
5,875,698 Blade and motor carrier with height/angle adjustment mechanism 72 1996
5,857,507 Table saw 52 1996
6,479,958 Anti-kickback and breakthrough torque control for power tool 108 1996
5,787,779 Chop/table saw arrangement 79 1997
5,819,625 Double bevel table saw 46 1997
5,927,857 Movable fence for a machine tool 50 1997
5,943,932 Bevel table saw adjustment 92 1997
6,062,121 Movable fence for a machine tool 42 1997
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2001/0032,534 TABLE SAW WITH SWITCHED RELUCTANCE MOTOR 39 1998
6,250,190 Movable fence for a machine tool 47 1998
6,427,570 Dust collection system for compound miter saw 70 1998
6,244,149 Blade and motor carrier with height/angle adjustment mechanism 68 1998
6,453,786 Blade and motor carrier with height/angle adjustment mechanism 70 1999
6,450,077 Movable fence for a machine tool 67 1999
6,148,703 Movable fence for a machine tool 47 1999
6,161,459 Movable fence for a machine tool 43 1999
6,357,328 Movable fence for a machine tool 44 2000
6,595,096 Blade and motor carrier with height/angle adjustment mechanism 71 2001
D469354 Shrink ring protector for circular saw blades 66 2001
D466913 Base portions of a table saw 65 2002
6,736,042 Work piece guiding system for a table saw 84 2002
D479538 Portions of table saw 66 2002
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D478917 Portions of a table saw 64 2002
2005/0235,793 Table saw guard 47 2004
 
SD3, LLC (19)
6,857,345 Brake positioning system 91 2001
6,920,814 Cutting tool safety system 81 2001
7,024,975 Brake mechanism for power equipment 45 2001
6,945,148 Miter saw with improved safety system 65 2002
6,826,988 Miter saw with improved safety system 87 2002
6,994,004 Table saw with improved safety system 62 2002
6,945,149 Actuators for use in fast-acting safety systems 63 2002
7,000,514 Safety systems for band saws 56 2002
6,997,090 Safety systems for power equipment 57 2004
2005/0139,056 Fences for table saws 74 2004
2005/0139,057 Table saws with safety systems 75 2004
2005/0139,058 Brake cartridges and mounting systems for brake cartridges 74 2004
2005/0139,459 Switch box for power tools with safety systems 65 2004
2005/0155,473 Dectection systems for power equipment 73 2004
2005/0166,736 Table saws with safety systems and systems to mount and index attachments 79 2005
2005/0274,432 Router with improved safety system 43 2005
2006/0032,352 Translation stop for use in power equipment 41 2005
2006/0123,964 Table saw with improved safety system 34 2006
2006/0123,960 Safety systems for power equipment 33 2006
 
HITACHI, LTD. (14)
2005/0186,696 Gas flowmeter and manufacturing method thereof 2005
2005/0186,696 Gas flowmeter and manufacturing method thereof 2005
2005/0186,696 Gas flowmeter and manufacturing method thereof 2005
2005/0186,696 Gas flowmeter and manufacturing method thereof 2005
2005/0186,696 Gas flowmeter and manufacturing method thereof 2005
2005/0186,696 Gas flowmeter and manufacturing method thereof 2005
2005/0186,696 Gas flowmeter and manufacturing method thereof 2005
2005/0186,696 Gas flowmeter and manufacturing method thereof 2005
2005/0186,696 Gas flowmeter and manufacturing method thereof 2005
2005/0186,696 Gas flowmeter and manufacturing method thereof 2005
2005/0186,696 Gas flowmeter and manufacturing method thereof 2005
2005/0186,696 Gas flowmeter and manufacturing method thereof 2005
2005/0186,696 Gas flowmeter and manufacturing method thereof 2005
2005/0186,696 Gas flowmeter and manufacturing method thereof 2005
 
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5,623,860 Adjustable/bypassable bevel stop for compound miter saw 81 1994
2002/0050,201 TABLE SAW 45 1999
6,986,370 Table saw 57 2000
6,502,493 Table saw blade heel adjuster 55 2001
2003/0000,359 TABLE SAW BLADE HEEL ADJUSTER 41 2001
 
ONE WORLD TECHNOLOGIES LIMITED (6)
5,116,249 Table saw 76 1991
5,331,875 Anti-kick forward device for power driven saws 68 1992
5,293,802 Table saw 54 1993
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6,543,324 Table saw throat plate with blade height scale 71 2001
2004/0255,745 Table saw guard assembly 58 2003
 
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6,484,614 Worktable of workpiece processing machine 42 2001
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6,644,157 Table saw having adjustable worktable 77 2001
6,840,144 Quick-detachable blade guard mounting structure 60 2002
6,826,992 Detachable saw blade guard mounting structure for bench saw 43 2003
 
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5,392,678 Miter saw 96 1993
5,791,057 Electromotive chain saw 80 1996
6,009,782 Table saw 47 1998
2005/0211,034 Mountings for riving knives of table saws 54 2005
 
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4,906,962 Fuse wire switch 75 1989
 
BENEDICT, CHARLES E. (1)
5,950,514 Miter saw blade guards 76 1997
 
BRES LLC (1)
5,921,367 Safety device for a kneading machine using rolls 85 1997
 
CAE MACHINERY LTD. (1)
4,606,251 Adjustable sawdust shear for bandmills 70 1985
 
CHANG TYPE INDUSTRIAL COMPANY, LTD. (1)
6,405,624 Splitter and cutting member guard assembly 80 1998
 
CONRAD TECHNOLOGIES, INC. (1)
6,366,099 Differential capacitance sampler 107 1999
 
DENSO CORPORATION (1)
6,257,061 Capacitive physical-quantity detection apparatus 100 1999
 
EASTLEX MACHINE CORPORATION (1)
6,148,504 Operator safety device for attaching apparatus 69 1996
 
EATON CORPORATION (1)
4,291,794 Power transmission and energy absorbing systems 109 1979
 
EIGENPOINT COMPANY (1)
6,734,581 Programmable emergency-stop circuit with testing 47 2002
 
ENICHEM ELASTOMERI S.R.L. (1)
5,199,343 Power saw with louvered blade guard 82 1991
 
F. L. SMIDTH & CO. A/S (1)
4,936,876 Method and apparatus for detecting back corona in an electrostatic filter with ordinary or intermittent DC-voltage supply 76 1987
 
FOOD INDUSTRY EQUIPMENT INTERNATIONAL, INC. (1)
5,272,946 Safety control system for power operated equipment 89 1992
 
GAUS, HARRY (1)
4,589,047 Protective mechanism in electrically operated devices 92 1983
 
GE MEDICAL TECHNOLOGY SERVICES, INC. (1)
6,492,802 Apparatus and method for detecting defects in a multi-channel scan driver 70 2000
 
GENERAL DYNAMICS LAND SYSTEMS, INC. (1)
5,320,382 Pulsed pressure source particularly adapted for vehicle occupant air bag restraint systems 97 1991
 
GENERAL MOTORS CORPORATION (1)
5,700,165 Fused high ampacity electrical quick disconnect 75 1995
 
GET GESELLSCHAFT FUR ELEKTRONIKTECHNOLOGIES MBH (1)
4,661,797 Electronic warning and monitoring apparatus and electrode arrangement therefor 53 1985
 
GIBEN IMPIANTI S.P.A. (1)
4,334,450 Sawing machines 32 1980
 
GRIZZLY INDUSTRIAL, INC. (1)
6,601,493 Band saw fence systems and methods 68 2000
 
HGST NETHERLANDS B.V. (1)
6,430,007 Air-activated spindle/disk pack locking system 70 1999
 
HIRSH INDUSTRIES, LLC (1)
4,625,604 Splitter and blade guard assembly 89 1985
 
HITACHI KOKI CO., LTD. (1)
5,572,916 Desk-top cutting machine 59 1994
 
HUI CHUAN LIAO (1)
6,283,002 Table saw apparatus 44 2000
 
HUSQVARNA AB (1)
6,336,273 Device to hold and guide an annular shaped saw blade 47 1998
 
HYDRO-AIRE, INC. (1)
6,659,233 System and method for aircraft braking system usage monitoring 85 2001
 
HYDRO-QUEBEC (1)
4,675,664 Alarm system and method for detecting proximity of an object to electrical power lines 54 1986
 
I.C.P. S.R.L. (1)
6,564,909 Wear detector for a vehicle braking member 45 2000
 
IDENTITECH CORPORATION (1)
4,510,489 Surveillance system having magnetomechanical marker 240 1982
 
IMO INDUSTRIES INC., BOSTON GEAR DIVISION (1)
5,423,232 Self-lubricating gear system 47 1993
 
INDIAN HEAD INDUSTRIES, INC. (1)
6,352,137 Brake monitoring system 74 2000
 
INGERSOLL-RAND COMPANY (1)
4,276,459 Paddle switch safety button 74 1980
 
INSTITUT DE RECHERCHE EN SANTE ET EN SECURITE DU TRAVAIL DU QUEBEC (1)
5,436,613 System for detecting human presence in hazardous situations 81 1993
 
INTELLECTUAL PROPERTY LLC (1)
6,471,106 Apparatus and method for restricting the discharge of fasteners from a tool 79 2001
 
INVENTIO AG (1)
5,648,644 Brake regulating apparatus for an elevator car 82 1994
 
JAMES JOSEPH MORRISON MANAGEMENT LTD. (1)
4,206,666 Press control system 43 1978
 
JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITED (1)
6,800,819 Tactile switch unit 45 2003
 
JBS USA, LLC (1)
5,989,116 High-speed bone-in loin slicer 57 1998
 
KABUSHIKI KAISHA KINDAI (1)
4,512,224 Slitter device 80 1983
 
KADANT BLACK CLAWSON INC. (1)
6,617,720 Integrated paper pulp and process machinery having integrated drive and control and methods of use thereof 62 2000
 
KANEFUSA KABUSHIKI KAISHA (1)
6,330,848 Circular saw cutting machine 49 2000
 
KUNREUTHER AND BERINGHAUSE (1)
4,235,161 Automatic tag attaching apparatus 104 1979
 
LEATHA BLAZETIC (1)
5,791,223 Angled power saw for railroad rails 71 1997
 
LOCKHEED MARTIN CORPORATION (1)
5,695,306 Fusible member connection apparatus and method 76 1996
 
MCKEON ROLLING STEEL DOOR CO., INC. (1)
5,245,879 Fail-safe fire door release mechanism having automatic reset 93 1992
 
MILWAUKEE ELECTRIC TOOL CORPORATION (1)
5,937,720 Lower blade guard actuating mechanism for a slide compound miter saw 78 1996
 
MOTOROLA, INC. (1)
4,975,798 Voltage-clamped integrated circuit 69 1989
 
MURATA MANUFACTURING CO., LTD. (1)
5,231,359 Ceramic resonance type electrostatic sensor apparatus 84 1990
 
NARTRON CORPORATION (1)
4,831,279 Capacity responsive control circuit 98 1988
 
NATIONAL RAILROAD PASSENGER CORPORATION (1)
6,052,884 Conveyorized system for rebuilding tread and disc brake actuator units for use in railway cars 65 1997
 
NEOPOST INDUSTRIE (1)
5,659,454 Thermal protection apparatus for a secure electronic appliance, in particular a postage meter 58 1994
 
ONE WORLD TECHNOLOGIES (1)
2004/0194,594 Machine safety protection system 98 2004
 
OUTBOARD MARINE CORPORATION (1)
4,195,722 Circuit for a power operated machine 80 1978
 
OWENS-CORNING FIBERGLAS CORPORATION (1)
4,637,188 Splicing means for faced insulation batts 71 1986
 
PACCAR INC (1)
4,937,554 Electronic brake monitoring system and method 85 1989
 
RAFF, TERRY, AS TRUSTEE OF THE MAIN CHILDREN'S TRUST (1)
4,644,832 Method for monitoring saw blade stability and controlling work feed rate on circular saw and bandsaw machines 73 1985
 
REITECH CORPORATION (1)
5,510,587 Electric circuit actuating mechanism 53 1994
 
RENFRO; JULIAN C. (1)
4,560,033 Multifunction wheelchair handbrake especially adapted for ramp climbing 90 1981
 
RITE-HITE HOLDING CORPORATION (1)
6,325,195 Machine safety guard 48 2001
 
ROBERT BOSCH GMBH (1)
4,722,021 Safety circuit for hand tools, and method for safe operation thereof 82 1986
 
ROBERT BOSCH TECHNOLOGY CORPORATION (1)
4,262,278 Diagnostic brake system warning circuit 56 1979
 
ROLLS-ROYCE PLC (1)
4,718,229 Failsafe electronic control systems 53 1986
 
ROSS OPERATING VALVE COMPANY (1)
4,372,202 Emergency brake for presses 66 1980
 
RYOBI NORTH AMERICA, INC. (1)
5,207,253 Plunge router 113 1992
 
S-B POWER TOOL CORPORATION (1)
5,174,349 Power table saw assemblies having integral spare part storage 85 1991
 
SAF-T-MARGIN, INC. (1)
5,081,406 Proximity responsive capacitance sensitive method, system, and associated electrical circuitry for use in controlling mechanical and electro-mechanical equipment 147 1990
 
SAMES S.A. (1)
4,672,500 Protective device for electrostatic sprayer equipment 65 1984
 
SANDIA NATIONAL LABORATORIES (1)
6,922,153 Safety detection and protection system for power tools 68 2003
 
SENCO BRANDS, INC. (1)
6,431,425 Pneumatic fastener driving tool and an electronic control system therefore 93 2000
 
SENCO PRODUCTS, INC. (1)
4,679,719 Electronic control for a pneumatic fastener driving tool 79 1985
 
SENSORMATIC ELECTRONICS CORPORATION (1)
5,534,836 Deactivator for theft-deterrent markers 76 1994
 
SHANKLIN CORPORATION (1)
5,321,230 Seal wire heat control system 79 1993
 
SHOPSMITH, INC. (1)
4,615,247 Anti-kickback system 70 1985
 
SIMATELEX MANUFACTORY CO., LTD. (1)
4,751,603 Safety devices 93 1987
 
SKF KUGELLAGERFABRIKEN GMBH (1)
4,589,860 Gear and method for making the same 77 1984
 
SOCIETE D'ASSISTANCE TECHNIQUE AUX INDUSTRIES ELECTRONIQUES, PNEUMATIQUES, HYDRAULIQES (1)
4,845,476 Proximity detector between a metallic mass and an element to which is applied an electric voltage 51 1987
 
SOCIETE D'EXPLOITATION SOREMEC-CHESS (1)
4,599,597 Circuit protection devices 67 1984
 
SOMMERVILLE DESIGN & MANUFACTURING INC. (1)
6,170,370 Circular saw splitter device with integral anti-kick back 78 1999
 
SONY CORPORATION (1)
6,404,098 Drive unit using shape memory alloy 123 2000
 
SPACE SYSTEMS/LORAL, LLC (1)
6,133,818 Redundant fuse wire release device 70 1999
 
STEELCASE DEVELOPMENT CORPORATION (1)
4,321,841 Press safety device 73 1980
 
SUMITOMO CHEMICAL COMPANY, LIMITED (1)
6,376,939 Sensor apparatus and safety apparatus for protecting approach to machines 99 2000
 
TECHTRONIC POWER TOOLS TECHNOLOGY LIMITED (1)
2004/0159,198 Table saw with cutting tool retraction system 92 2003
 
TEKONSHA TOWING SYSTEMS, INC. (1)
5,741,048 Controller for electric braking system 67 1994
 
THE BOEING COMPANY (1)
5,046,426 Sequential structural separation system 85 1989
 
THE COOKSON COMPANY (1)
5,082,316 Release mechanism and method with alarm circuit 69 1990
 
THE ENGINEERING CONSORTIUM, INC. (1)
4,756,220 Safety mechanism for saws 67 1987
 
THE GILLETTE COMPANY (1)
4,199,930 Alarm switch for an alarm circuit in a horological device 61 1978
 
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE ARMY (1)
4,190,000 Mine proximity fuse 78 1962
 
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY (1)
5,239,978 Oscillatory abrasive cable power saw 58 1992
 
THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL (1)
6,420,814 Spiral wound transducer 73 1999
 
THE WILL-BURT COMPANY (1)
4,319,146 Power driven equipment safety device 35 1980
 
THESMAN INDUSTRIES, INC. (1)
4,466,233 Mower drive assembly 82 1982
 
TOSHIBA GLOBAL COMMERCE SOLUTIONS HOLDINGS CORPORATION (1)
6,889,585 Cutter blade position detection mechanism and method of reporting cutter malfunction 51 2000
 
TOSHIBA STORAGE DEVICE CORPORATION (1)
5,592,353 Power supply system 71 1994
 
TOWNSEND ENGINEERING COMPANY (1)
5,025,175 Safety means for powered machinery 82 1989
 
TSUNE SEIKI CO., LTD. (1)
5,974,927 Circular saw cutting machine 64 1997
 
TUSCARORA DESIGNS INC. (1)
5,074,047 Anti-pinch device for chain saw 58 1990
 
TYCO FIRE & SECURITY GMBH (1)
5,963,173 Antenna and transmitter arrangement for EAS system 86 1997
 
WAGNER ELECTRONIC PRODUCTS, INC. (1)
5,671,633 Plate array for moisture sensor with reduced sensitivity to loading effects 67 1996
 
WHIRLWIND, INC. (1)
4,637,289 Work presence controller 75 1984
 
WOOD-MIZER PRODUCTS, INC. (1)
4,559,858 Portable band saw saw mill apparatus 54 1982
 
OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (58)
4,326,313 Method of making footwear 68 1979
4,305,442 Saw including resiliently mounted flexible guard means 68 1980
4,391,358 Hardware press and punch apparatus 86 1980
4,466,170 Adjustable circular insulation saw system 45 1981
4,576,073 Saw blade guard 58 1983
4,532,844 Device for supporting a circular saw of sawing machine 70 1984
4,503,739 Table saw with multiple blade turret 29 1984
4,621,300 Safety monitoring system for punch press operators 74 1984
4,566,512 Router attachment 77 1985
4,657,428 Quick change mechanism for circular saw blades and other spinning disc devices 106 1985
4,792,965 Oscillator system for detecting a selected one of a plurality of tuned circuits 82 1987
5,201,110 Pallet dismantler 50 1988
4,962,685 Production table saw 55 1988
4,907,679 Catch device for a roll-up door, grate, grill or the like 45 1989
5,052,255 Speed brake 76 1989
5,146,714 Process and arrangement for removing excess material from castings 29 1989
4,964,450 Extension for table saw 70 1989
5,206,625 Brake wear indicator 46 1991
5,265,510 Material working and tool control system 70 1992
5,231,906 Table saw guard 65 1992
5,401,928 Safety control for power tool 68 1993
5,377,571 Safety guard system for band saws and similar equipment 68 1993
5,447,085 Table saw accessories for improved operability 55 1994
6,418,829 Power tool safety device 97 1994
5,510,685 Electric motor control based on conductive contact of machine component with operator for injury prevention 71 1994
5,503,059 Vehicle disabling device and method 79 1995
5,587,618 Direct current homopolar machine 74 1995
5,667,152 Safety system for a wood chipper 99 1995
5,619,896 Base of a sawing machine 51 1995
5,880,954 Continous real time safety-related control system 87 1995
5,782,001 Circular saw guard hold and release device 90 1996
5,791,441 Brake failure monitoring system 69 1996
5,797,307 Portable combination table, cross-cut, rip-cut, and miter saw 37 1996
5,942,975 Method and a device for sensing the distance between a first object and a second object 132 1998
6,095,092 Apparatus and method for confining an animal within a boundary 82 1999
6,796,208 Sawdust collection hood for table saw 58 1999
6,112,785 Work table having auxiliary sliding table 50 1999
6,536,536 Power tools 177 2000
6,578,460 Blade guard assembly 72 2000
6,578,856 Collapsible portable saw stand 88 2000
6,546,835 Saw blade adjusting device for table saw 81 2001
2003/0037,655 Catch structure of rotary cover plate of circular sawing machine 58 2001
2002/0043,776 Mobile machinary base 44 2001
6,722,242 Transmission device of a table saw 41 2001
6,619,348 Adjustable and extendible platform for working table 76 2002
6,684,750 Structure of a connection seat and a suspension seat of the connection seat for a suspension round saw 51 2002
2003/0213,349 Table saw having a workpiece positioning and push cutting device 29 2002
6,874,399 Cutting machine with built-in miter cutting feature 62 2002
6,854,371 Device for smooth sliding of a positioning rod of a sawing device platform 40 2002
6,968,767 Saw machine having two saw blades 41 2003
2009/0132,648 CONTENT DELIVERY AND GLOBAL TRAFFIC MANAGEMENT NETWORK SYSTEM 2009
2009/0132,648 CONTENT DELIVERY AND GLOBAL TRAFFIC MANAGEMENT NETWORK SYSTEM 2009
2009/0132,648 CONTENT DELIVERY AND GLOBAL TRAFFIC MANAGEMENT NETWORK SYSTEM 2009
2009/0132,648 CONTENT DELIVERY AND GLOBAL TRAFFIC MANAGEMENT NETWORK SYSTEM 2009
2009/0132,648 CONTENT DELIVERY AND GLOBAL TRAFFIC MANAGEMENT NETWORK SYSTEM 2009
2009/0132,648 CONTENT DELIVERY AND GLOBAL TRAFFIC MANAGEMENT NETWORK SYSTEM 2009
2009/0132,648 CONTENT DELIVERY AND GLOBAL TRAFFIC MANAGEMENT NETWORK SYSTEM 2009
2009/0132,648 CONTENT DELIVERY AND GLOBAL TRAFFIC MANAGEMENT NETWORK SYSTEM 2009

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
ROBERT BOSCH GMBH (9)
8,327,744 Table saw with reset mechanism 0 2009
8,316,748 Table saw with alignment plate 0 2009
8,297,159 Table saw with dropping blade 0 2009
8,291,801 Table saw with ratchet mechanism 0 2009
8,286,537 Table saw with pressure operated actuator 0 2009
8,250,957 Table saw with linkage drop system 0 2009
8,245,612 Table saw with swing arm support 0 2009
8,210,076 Table saw with mechanical fuse 0 2009
8,186,258 Table saw with actuator reset mechanism 0 2009
 
POWER TOOL INSTITUTE (6)
7,628,101 Pyrotechnic drop mechanism for power tools 14 2006
7,739,934 Detection system for power tool 2 2008
8,122,798 Power cutting tool with proximity sensing system 1 2009
8,074,546 Pyrotechnic drop mechanism for power tools 0 2009
7,888,826 Capacitive sensing system for power cutting tool 0 2010
8,186,253 Detection system for power tool 0 2010
 
AURORA OFFICE EQUIPMENT CO., LTD. SHANGHAI (5)
8,201,766 Pins or staples removable structure of automatic shredders 0 2009
8,146,845 Automatic shredder without choosing the number of paper to be shredded 1 2009
8,087,599 Anti-paper jam protection device for shredders 0 2009
8,018,099 Touch-sensitive paper shredder control system 0 2009
8,008,812 Paper shredder control system responsive to touch-sensitive element 0 2010
 
SD3, LLC (3)
7,640,835 Apparatus and method for detecting dangerous conditions in power equipment 2 2007
8,006,595 Apparatus and method for detecting dangerous conditions in power equipment 0 2010
8,413,559 Apparatus and method for detecting dangerous conditions in power equipment 0 2011
 
KIMBERLY-CLARK WORLDWIDE, INC. (1)
7,484,261 Spot cleaner 2 2004
 
ROBERT BOSCH TOOL CORPORATION (1)
8,316,747 Table saw riving knife 0 2010

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
7.5 Year Payment $3600.00 $1800.00 $900.00 Apr 23, 2015
11.5 Year Payment $7400.00 $3700.00 $1850.00 Apr 23, 2019
Fee Large entity fee small entity fee micro entity fee
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
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