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| Number | Title | Issue Date |
| 8014966 | Calibration and setup unit for barrier operator control system A setup and calibration unit for a barrier operator is operable to communicate with the operator's own controller. The calibration unit includes a control circuit connected to a visual display and to a set of switches controlled by switch actuators for placing the o... | 09/06/2011 |
| 7996231 | Speech activated door operator system A barrier operator system, such as a garage door operator system, includes one or more remote control units, such as an inside remote control unit, an external wall mounted remote control unit and portable vehicle disposed remote control units which include speech r... | 08/09/2011 |
| 7600550 | Automatic barrier operator system An automatic barrier operator system for operating a gate or upward acting garage door, for example, includes a controller for operating a reversible motor, a base radio frequency transmitter and a base radio frequency receiver. One or more remote control units incl... | 10/13/2009 |
| 7557690 | Device including light emitting diode as light sensor and light source A battery operated controller for a door operator includes a keypad backlit by a light emitting diode operably connected to a microcontroller which also controls operation of the controller. The microcontroller periodically measures ambient light as sensed by the li... | 07/07/2009 |
| 7555867 | Swing door operator A motorized universal swing door operator includes a motor driving a gear reduction drive mechanism having an output shaft adapted to be connected to a swing door operating arm. The output shaft supports a sprocket around which is trained a chain having opposite end... | 07/07/2009 |
| 6776210 | Sectional door reinforcing post assembly A reinforcing post assembly for use with a sectional upward acting door to reinforce the door against high windloads includes an elongated C-channel shaped post reinforced with spaced apart gusset plates, and including retractable anchor pin members at its lower end... | 08/17/2004 |
| 6772818 | Insulated sectional door panel A sectional garage door panel includes a skin part formed of a rolled metal sheet forming an outer wall and opposed top and bottom edges which may form a pinch resistant joint when adjacent panels are interconnected. Elongated prefabricated insulation parts are inse... | 08/10/2004 |
| 6745814 | Guide track assemblies and mounting brackets for upward acting doors Guide track assemblies for upward acting doors include identical vertical and horizontal linear track sections and a curvilinear transition track section. The linear track sections include spaced-apart elongated slots formed at acute angles with respect to the longi... | 06/08/2004 |
| D490333 | Wall mountable controller and message recorder for garage door operator | 05/25/2004 |
| 6737823 | Door operator control system and method A control system for controlling the operation of an electric motor driven door or gate operator unit having a speed reducing gear drive mechanism and a brake unit for positive braking of the motor output shaft. A programmable microcontroller is operably connected t... | 05/18/2004 |
| 6729380 | Guide member silencers for track guided doors Track guided doors, such as upward acting multipanel garage doors are provided with roller guide member support brackets on opposite side edges of the panels for supporting guide rollers disposed in the opposed guide tracks. The support brackets include bearing bore... | 05/04/2004 |
| 6722416 | Flexible curtain rollup door with combination stiffening struts and windlocks A flexible curtain rollup door includes a drum mounted on a door frame and drivenly connected to an electric right angle gear motor unit. The frame includes opposed channel shaped guide tracks for receiving opposed side edges of a door curtain. Spaced apart elastica... | 04/20/2004 |
| 6667684 | Remote controlled garage door opening system A remote control system for opening and closing a barrier, such as a garage door, includes an RF receiver and a plurality of RF transmitters. The transmitters and receiver include circuitry programmed to provide transmission of encrypted code signals each... | 12/23/2003 |
| 6629387 | Sectional upward acting door and method of assembly Sectional door panels include formed metal or plastic skin parts with opposed upper and lower edges configured to form pinch resistant connections between adjacent panels. The skin part edges include spaced-apart slots for receiving locating flanges forme... | 10/07/2003 |
| 6626226 | Upward acting sectional door with pinch resistant edge profile between door panels A sectional upward acting door includes interconnected door panels which are formed with generally planar outer and inner wall parts and upper and lower edges which cooperate to provide a pinch resistant joint between door panels when they are pivoted rel... | 09/30/2003 |
| 6578235 | Universal inside-outside door handle A handle assembly, particularly adapted for a sectional door panel includes identical handle parts each having a grip portion and spaced apart transversely extending legs. One of the legs of each handle part has an elongated shank extending therefrom and ... | 06/17/2003 |
| 6553618 | Dual durometer roller guide member for track guided door Guide rollers for upward-acting track guided doors are formed of dual durometer plastic materials wherein a hub portion of the guide roller is formed of a relatively hard moldable plastic material having a durometer of about Rockwell R 120. A tire or trea... | 04/29/2003 |
| 6554047 | Guide track assemblies and mounting brackets for upward acting doors Guide track assemblies for upward acting doors include substantially linear vertical and horizontal track sections and curvilinear transition sections formed as portions of each of the vertical and horizontal linear sections. The track assemblies are supp... | 04/29/2003 |
| 6530863 | Door operator unit A door operator unit includes a drive motor connected to a speed reduction differential planetary gear drive mechanism having a drive unit output shaft. An electromagnetic brake is interposed the motor output shaft and the planetary gear drive mechanism a... | 03/11/2003 |
| 6527035 | Guide track assemblies and mounting brackets for upward acting doors Guide track assemblies for upward acting doors include identical vertical and horizontal linear track sections and a curvilinear transition track section. The linear track sections include spaced-apart elongated slots formed at acute angles with respect t... | 03/04/2003 |
| 6481038 | Self releasing holddown mechanism for dock leveler A self releasing holddown mechanism for a dock leveler includes an elongated bar member adapted for connection to a dock leveler ramp and engageable with a roller lock member mounted on a body connected to an anchor rod which is connected at one end to th... | 11/19/2002 |
| 6478308 | Replaceable door seal and retainer assemblies Door edge seal and retainer assemblies, particularly adapted for swing doors of motor truck and similar cargo containers, include elongated channel shaped retainer parts adapted to be mounted on the panel edges of the cargo container doors and comprising ... | 11/12/2002 |
| 6476572 | Power supply system and method for dock equipment An electric power supply system for dock equipment at a freight loading dock, such equipment including dock levelers and truck restraints which are powered by electric motors. The emergency power supply system utilizes electric powered freight moving vehi... | 11/05/2002 |
| 6473926 | Cross traffic legs for dock leveler Cross traffic legs for a dock leveler having a ramp mounted for pivotal movement between inclined, declined and cross traffic positions include first leg members mounted for pivotal movement on the ramp and second leg members which are supported on and mo... | 11/05/2002 |
| 6422965 | Door operator unit A door operator unit includes a drive motor connected to a speed reduction differential planetary gear drive mechanism having a drive unit output shaft for connection to a further door drive mechanism. An electromagnetic brake is interposed between the mo... | 07/23/2002 |
| 6409452 | Electrically actuated vehicle restraint apparatus A vehicle restraint apparatus includes a frame supporting an articulated arm assembly which is pivotable between a retracted or stored position and an extended operative position for engagement with the ICC bar or other restraint member connected to a tru... | 06/25/2002 |
| 6408926 | Sectional door reinforcement system and method Sectional garage door panels are provided with elongated reinforcing beams secured to the inside surface of the panels by supporting a beam on a panel with spaced apart support brackets secured to the panel and securing the beam to the panels at spaced ap... | 06/25/2002 |
| 6388412 | Door operator control system and method An operator control system for controlling the operation of an electric motor driven door or gate operator unit having a speed reducing gear drive mechanism and a brake unit for positive braking of the motor output shaft. A programmable microcontroller is... | 05/14/2002 |
| 6328091 | Upward acting sectional door with pinch resistant edge profile between door panels A sectional upward acting door includes interconnected door panels which are formed with generally planar outer and inner wall parts and upper and lower edges which cooperate to provide a pinch resistant joint between door panels when they are pivoted rel... | 12/11/2001 |
| 6263948 | Bottom bracket for upward acting door Bottom edge brackets for an upward acting door each include a base part including fastener receiving bores for securing the brackets to the bottom edge of the door, a flange projecting substantially normal to the base part including a connecting lug mount... | 07/24/2001 |
| 6205606 | Vertically stored dock leveler A vertically storable dock leveler apparatus includes a generally planar ramp member mounted on a frame by a hinge connection which includes spaced apart hinge plates secured to the frame, each having hinge pin receiving bores formed therein. An elongated... | 03/27/2001 |
| 6175988 | Bypass vacuum cleaner with flexible vacuum hose stored over motor cooling air shroud and carrying handle An electric motor driven bypass type vacuum cleaner apparatus, particularly adapted for wet/dry debris collection includes an open top debris collection tank having opposed integrally formed cup-shaped feet for supporting said apparatus in a stable positi... | 01/23/2001 |
| 6163913 | Dock leveler A dock leveler includes a pivotally mounted ramp and a lip member pivotally mounted to the distal end of the ramp and moveable between an extended position and a depending position for forming a path between a loading dock and a loadbed of a vehicle. A mo... | 12/26/2000 |
| 6158171 | Swing door seal and retainer assembly having a seal with interior webs Resilient seal and retainer assemblies for the side edges of a swing door panel of a cargo container. Each assembly includes, in one embodiment, a resilient seal member and a relatively rigid retainer member, coextruded of polyvinyl chloride. The retainer... | 12/12/2000 |
| 6155327 | Counterbalance system adjustment mechanism for rollup door A counterbalance spring adjustment mechanism, particularly adapted for a rollup type upward-acting door which is supported between spaced apart wall brackets on a rotatable shaft. One end of the torsion spring is connected to a hub including a tubular hub... | 12/05/2000 |
| 6134835 | Counterbalance system for upward acting door A counterbalance system for an upward-acting door includes spaced-apart wall brackets and cable drums supported on the brackets and connected to flexible cables which depend from the drums and connected to the lower side edges of an upward-acting sectiona... | 10/24/2000 |
| 6125582 | Spring winder support for door counterbalance system A counterbalance system for an upward acting door includes spaced apart wall brackets supporting a tubular shaft for spaced apart cable drums operable to wind counterbalance cables thereon to counterbalance the weight of the door. Torsion springs intercon... | 10/03/2000 |
| 6118243 | Door operator system A door operator system for an upward acting sectional or one piece (California-type) garage door includes a DC variable speed motor directly connected to a drive mechanism for moving the door between open and closed positions. A motor control circuit incl... | 09/12/2000 |
| 6112464 | Bracket for counterbalanced garage door An upward acting sectional door formed of rectangular door sections which are interconnected to form a closure over a door opening. Opposed somewhat L-shaped bottom brackets are secured to opposed lower side edges of the bottom door section by fasteners w... | 09/05/2000 |
| 6112353 | Dock leveler lip actuating mechanism A dock leveler lip extension mechanism includes a bellcrank pivotally mounted on the leveler ramp and connected to a pull chain, a pushrod for extending the lip and to a counterbalance spring assembly at spaced apart points on the bellcrank. The bellcrank... | 09/05/2000 |
