US Patent No: 5,557,887

Number of patents in Portfolio can not be more than 2000

Yieldable gearing and safety mechanisms for garage door operators

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Importance

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Abstract

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A garage door operator which senses obstructions and takes corrective action before entrapment can occur. Yieldable gears are utilized as a failsafe mechanism such that when the applied torque exceeds certain limit, the gears disengage so that the garage door can be manually moved. The yieldable gears may also be disengaged by remote control or by hand. Solid state circuitry is provided to achieve soft starts and stops of the electric motor. Test circuitry is provided that tests the operational readiness of the electrical components by simulating an abnormal torque condition. During operation of the electric motor, the torque load is electronically calculated and if an abnormal torque load is encountered, the electric motor reverses direction.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
FELLOWS; JERRY W.MARTINEZ, CA0

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Davis, Richard S Palo Alto, CA 18 298
Fellows, Jerry W 4950 John Muir Rd., Martinez, CA 94553 2 60
Sherlock, Thomas M Los Altos Hills, CA 12 125

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (3)
* 4,428,252 Actuator device for opening a sliding door 2 1981
* 4,732,203 Sectional door with operator 14 1986
* 5,335,307 Precision electric motor speed 8 1993
 
Firmaframe Nominees Pty. Ltd. (1)
* 4,342,354 Mechanism for stopping the drive or reversing the drive of motors of roller shutter doors 32 1980
 
The Chamberlain Group, Inc. (1)
* 4,653,565 Garage door opener 19 1985
 
SIEMENS AKTIENGESELLSCHAFT (1)
* 5,239,252 Method and apparatus for controlling single or multiphase A.C. power controllers 6 1990
 
Firmagroup Australia Pty. Ltd. (1)
* 4,706,727 Door operator 22 1985
 
UUSI, LLC (1)
* 5,334,876 Power window or panel controller 93 1992
 
Everest & Jennings Canadian Limited (1)
* 4,504,094 Drive mechanism for invalid carriages 10 1982
 
GMI HOLDINGS, INC. (1)
* 5,384,495 Wiring error detector for door operator 11 1993
 
Stanley Home Automation (1)
* 5,278,480 Door opener control with adaptive limits and method therefor 148 1992
 
R & S WHOLESALE DOORS, INC. (1)
* 5,222,327 Side mount garage door operator 37 1991
 
ITT CORPORATION (1)
* 5,105,131 Power drive system for sliding door 43 1990
 
CONAX FLORIDA CORPORATION (1)
* 4,680,537 Method and apparatus for testing a conductivity sensing circuit 12 1985
 
BBH, INC. (1)
* 4,553,652 Coupling mechanism 12 1983
 
Effective Flow Ideas, Inc. (1)
* 4,832,184 Live roller conveyor apparatus 20 1987
 
F.LLI CUCCHI S.R.L. (1)
* 4,667,789 Control device for feeding metal bars for supplying an automatic multi-spindle lathe 5 1985
 
MITSUBISHI DENKI KABUSHIKI KAISHA (1)
* 5,080,642 Rotation transmission device with a torque limiting transmission gear mechanism 7 1990
 
FAIVELEY ENTERPRISES (1)
* 4,605,108 Device for releasing a rotational-locking actuating member 17 1983
 
Sundstrand Corporation (1)
* 5,040,643 Radial torque limiter 2 1990
 
JOHNSON CONTROLS TECHNOLOGY COMPANY (1)
* 5,246,095 Output torque sensor and control apparatus 2 1992
 
JOHNSON SERVICE COMPANY (1)
* 4,794,314 Environmental position actuator apparatus having load responsive limit control apparatus 23 1987
 
IVG Australia Pty. Ltd. (1)
* 5,042,315 Gear mechanism 8 1989
 
C. & E. FEIN GMBH (1)
* 4,923,047 Machine with variable torque setting 9 1988
 
Chamnberlain Manufacturing Corporation (1)
* 4,472,910 Integral device for garage door opener 88 1982
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Hydromach Inc. (1)
* 5,698,073 Automatic sectional door opener 55 1996
 
Other [Check patent profile for assignment information] (8)
* 5,937,578 Garage door safety sensor mounting assembly 4 1997
* 6,179,036 Automatic overhead door opening system with dual motor drive and automatic door lock 18 1999
* 2005/0183,236 Sliding replacement door 1 2005
* 2006/0015,398 Intruder, theft and vandalism deterrent management system for controlling a parking area 6 2005
8,375,635 Apparatus for opening and closing overhead sectional doors 1 2009
8,825,535 Management and control system for a designated functional space having at least one portal 1 2011
8,831,970 Virtual attendant system and parking management system 4 2012
* 9,162,094 Door machine mechanism for rolling door having functions of fireproof, smokeproof, and fire escape 0 2013
 
Won-Door Corporation (4)
* 7,782,019 Method and apparatus for battery-backed power supply and battery charging 14 2009
* 2010/0078,134 METHOD AND APPARATUS FOR BATTERY-BACKED POWER SUPPLY AND BATTERY CHARGING 2 2009
8,493,033 Method and apparatus for battery-backed power supply and battery charging 1 2010
* 2011/0036,513 METHOD AND APPARATUS FOR BATTERY-BACKED POWER SUPPLY AND BATTERY CHARGING 13 2010
 
SMARTDOOR HOLDINGS, INC. (3)
6,484,784 Door controlling device 52 2000
6,945,303 Intruder, theft and vandalism deterrent management system for controlling a parking area 13 2002
* 2003/0075,287 Intruder, theft and vandalism deterrent management system for controlling a parking area 4 2002
 
The Chamberlain Group, Inc. (8)
* 6,091,217 Safety gate operator which prevents entrapment, and method of its operation 27 1998
* 6,860,065 Remote release for a movable barrier arrangement 6 2002
* 6,995,533 Controlled torque drive for a barrier operator 2 2003
* 7,205,735 Barrier movement operator having obstruction detection 3 2004
* 2005/0156,546 Barrier movement operator having obstruction detection 0 2004
7,610,030 Wireless transmit-only apparatus and method 0 2006
* 2007/0054,644 Wireless Transmit-Only Apparatus and Method 3 2006
7,432,676 Barrier movement operator having obstruction detection 3 2006
 
WAYNEDALTON CORP. (1)
* 2009/0115,366 Pivoting and Barrier Locking Operator System 3 2006
 
WAYNE-DALTON CORP. (2)
6,253,824 Disconnect for powered sectional door 26 1999
6,326,751 System and related methods for detecting and measuring the operational parameters of a garage door utilizing a lift cable system 46 1999
 
HORMANN KG ANTRIEBSTECHNIK (2)
* 7,007,427 Separating device for an overhead door 3 2002
* 2003/0019,157 Separating device 0 2002
 
Kabushiki Kaisha Komatsu Seisakusho (1)
* 5,802,766 Method and apparatus for controlling automatic opening and closing of window of driver's cab of working vehicle 3 1996
 
HOMERUN HOLDINGS CORPORATION (24)
* 5,931,212 Motorized operator for doors 37 1997
* 5,929,580 System and related methods for detecting an obstruction in the path of a garage door controlled by an open-loop operator 71 1997
* 6,164,014 Cable control device for sectional overhead door 49 1998
6,401,792 Motorized operator for doors 35 1999
6,263,947 Cable control device for sectional overhead door 6 2000
* 6,561,255 Overhead door locking operator 15 2000
6,588,156 Sectional door operator alignment method 4 2001
6,845,804 Overhead door locking operator 6 2003
6,851,465 Overhead door locking operator 4 2003
6,880,609 Overhead door locking operator 6 2003
6,739,372 Overhead door locking operator 12 2003
7,397,342 Operating system for a motorized barrier operator with a radio frequency energized light kit and/or switch and methods for programming the same 4 2004
* 2005/0184,854 Operating system for a motorized barrier operator with a radio frequency energized light kit and/or switch and methods for programming the same 5 2004
7,367,160 Door operator system 7 2004
7,143,804 Overhead door locking operator with remote light assembly 3 2005
* 2005/0126,717 Overhead door locking operator with remote light assembly 0 2005
7,061,197 Pivoting and barrier locking operator system 10 2005
7,282,883 Pivoting and barrier locking operator system 2 2006
* 2006/0290,307 PIVOTING AND BARRIER LOCKING OPERATOR SYSTEM 0 2006
7,717,155 Pivoting barrier operator system with integral cable storage drum and transfer assembly 1 2006
* 2007/0215,292 Pivoting barrier operator system with integral cable storage drum and transfer assembly 2 2006
* 7,576,504 Pivoting and barrier locking operator system 3 2006
7,246,647 Overhead door locking operator 4 2006
7,607,263 Door operator system 3 2008
 
REGAL BELOIT AMERICA, INC. (2)
7,271,560 Assembly for moving a barrier and method of controlling the same 1 2004
* 2006/0091,838 Assembly for moving a barrier and method of controlling the same 1 2004
 
MAGNA CLOSURES INC. (1)
* 9,234,377 Powered garage door opener 0 2014
 
RYTEC CORPORATION (1)
* 2013/0112,357 Overhead Roll-Up Door Having At Least Two Motors 1 2011
 
MITSUBISHI DENKI KABUSHIKI KAISHA (1)
* 2006/0144,643 Elevator door control unit 4 2006
 
OVERHEAD DOOR CORPORATION (2)
* 6,118,243 Door operator system 73 1999
6,442,897 Counterbalance system cable drum for sectional doors 9 2000
* Cited By Examiner