Patent application number | Description | Published |
20090008042 | RETRACTABLE SAFETY BARRIERS AND METHODS OF OPERATING SAME - A retractable barrier system includes an example gear assembly that can be manipulated for rapidly deploying a flexible barrier, exerting high torque for the initial tightening of the barrier, maintaining high static tension in barrier when in use, and/or rapidly retracting barrier for storage. In some examples, the gear assembly is a worm drive with a worm that can be selectively disengaged from a worm gear. Other optional features of the barrier system include selective right-hand/left-hand configurations, an electric switch that can be added to indicate whether the barrier system is in use, an intermediate coupling that joins the distal ends of two barriers for creating an extra long barrier system, and removable vehicle-mounted posts for certain loading dock applications. | 01-08-2009 |
20100034664 | Sprinkler-compatible ceiling fans - In the event of a fire, in some examples, a ceiling fan stops its fan blades at a predetermined position so as to avoid obstructing the spray from an overhead sprinkler head. The fan can be stopped by various means including, but not limited to, a spring loaded roller engaging a lobed member to urge the fan to a chosen stop position, an electromechanical brake that grips a rotating member at certain locations, a stationary magnet attracted to one or more iron pads that rotate to certain locations, and a motor controller responsive to a rotational position sensor. | 02-11-2010 |
20100263286 | TRACK AND GUIDE SYSTEM FOR A DOOR - A vertically operating door and its drive system can be configured to push a door panel along a track to various overhead storage configurations including vertical, horizontal, inclined and coiled. Semi-flexible drive strips extend continuously along lateral edges of the curtain. The system includes a drive gear that engages a series of projections on at least one drive strip so that the gear can push the door between its open and closed positions. To protect the door from being damaged by collisions, the track can include a breakaway feature that allows at least a portion of the panel with its drive strip to separate from the track without permanent distortion. The drive strip and panel remain together as they break away from the track. The threshold of the breakaway force can be changed by selecting a retention strip from a plurality of interchangeable strips having different degrees of flexibility. | 10-21-2010 |
20110067307 | TRACK AND GUIDE SYSTEM FOR A DOOR - A vertically operating door and its drive system can be configured to push a door panel along a track to various overhead storage configurations including vertical, horizontal, inclined and coiled. Semi-flexible drive strips extend continuously along lateral edges of the curtain. The system includes a drive gear that engages a series of projections on at least one drive strip so that the gear can push the door between its open and closed positions. To protect the door from being damaged by collisions, the track can include a breakaway feature that allows at least a portion of the panel with its drive strip to separate from the track without permanent distortion. The drive strip and panel remain together as they break away from the track. The threshold of the breakaway force can be changed by selecting a retention strip from a plurality of interchangeable strips having different degrees of flexibility. | 03-24-2011 |
20110075441 | LIGHT FIXTURES FOR DOORWAYS AND OTHER AREAS - Example light fixtures include one or more light transmitting illuminated rods that emit a series or array of discrete spots of light. Some example light fixtures disclosed herein include optical features that provide an intriguing, attention-getting affect that can be useful particularly in alerting personnel of certain conditions at a doorway of a truck loading dock. In some examples, the light transmitting rods are mechanically coupled to a housing that contains an LED light source. The mechanical coupling allows the illuminated rods to be readily replaced without disrupting with the operation or wiring of the light source. Some example light fixtures illuminate the cargo bay of a vehicle at the loading dock. | 03-31-2011 |
20120061032 | RETRACTABLE SAFETY BARRIERS AND METHODS OF OPERATING SAME - A retractable barrier system includes an example gear assembly that can be manipulated for rapidly deploying a flexible barrier, exerting high torque for the initial tightening of the barrier, maintaining high static tension in barrier when in use, and/or rapidly retracting barrier for storage. In some examples, the gear assembly is a worm drive with a worm that can be selectively disengaged from a worm gear. Other optional features of the barrier system include selective right-hand/left-hand configurations, an electric switch that can be added to indicate whether the barrier system is in use, an intermediate coupling that joins the distal ends of two barriers for creating an extra long barrier system, and removable vehicle-mounted posts for certain loading dock applications. | 03-15-2012 |
20130291455 | SAFETY BARRIER SYSTEMS FOR LOADING DOCKS - Example safety barrier systems for vehicle loading docks comprise a retractable flexible barrier with a special powered latching mechanism that locks the barrier in place and prevents it from being retracted under certain hazardous dock conditions. In some examples, the barrier cannot be retracted when there is no vehicle at the dock while the dock's door is open. In some examples, an alarm is energized when concurrently the door is open, the barrier is retracted and there is no vehicle at the dock. | 11-07-2013 |
20140166950 | PORTABLE TRAILER STANDS - Example portable trailer stands for supporting parked trailers are disclosed herein. Some example portable trailer stands disclosed herein comprise two telescopic posts supporting a generally horizontal beam. Some examples include spring-loaded retractable wheels for selectively installing and removing the trailer stand from underneath a trailer left parked on a driveway. After being positioned under the trailer, the posts extend to lift the beam solidly up against the underside of the trailer. To accommodate conditions where the driveway is not parallel to the trailer's underside, some example posts can be lengthened independently and have angular play that allows the beam to tilt. In some examples, the horizontal axle of the trailer stand wheels is perpendicular to the beam so that the trailer stand can be readily installed from either the front or side of the trailer. Some examples have a kingpin-receiving groove in the beam or have some other kingpin-receiving feature. | 06-19-2014 |