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| Number | Title | Issue Date |
| 7007858 | Compact boiler with tankless heater for providing heat and domestic hot water and method of operation A small and compact boiler for providing hot water for indoor heating and domestic hot water and method of operation are provided. The boiler includes a three way valve configured to circulate boiler water through a heating circuit when indoor heat is required, and ... | 03/07/2006 |
| 6804850 | Loading dock with lip protecting bumpers A dock leveler and installation thereof having a bumper assembly to protect the deck and the lip of the leveler. In one embodiment the dock leveler comprises a pivotable deck and a lip attached to the deck at one end thereof. A bumper is operably connected to the de... | 10/19/2004 |
| 6782634 | Sensor and method for locating a discontinuity A method and apparatus for locating a discontinuity such as a hole in a work piece is provided. The apparatus includes a probe having a shaft attached to a handle for locating a discontinuity in relation to a coordinate system. The probe includes an end unit attache... | 08/31/2004 |
| 6783342 | Method and apparatus for timing rotors in a rotary lobe pump A rotary lobe pump includes two geared-together, counter-rotating shafts, to which are affixed rotors with interdigital lobes. Adjustment of the angular relationship of the rotors uses a clamping device within each rotor. The clamping device consists of a tapered, s... | 08/31/2004 |
| 6781516 | Master control panel for loading dock equipment A unified docking apparatus is provided. It includes a single set of controls to operate a vehicle restraint, a dock door, a barrier device, a dock seal, and a loading light. Some optional embodiments include selector switch to select which apparatus the single set ... | 08/24/2004 |
| 6772713 | Method and apparatus for providing and utilizing outside air for boiler combustion A method and apparatus for sealing a combustion intake for a boiler from inside air is provided. A method and apparatus for providing a transition piece for venting fresh air to and combusted air away from a boiler is also provided. A method of connecting a transiti... | 08/10/2004 |
| 6769149 | Multi-position releasable lip latch for a dock leveler A dock leveler having a frame and a deck pivotably mounted at one end thereof to the frame. A lip is pivotably mounted to the deck at another end thereof. A lip latch and lip extension mechanism are mounted to the leveler and comprises a lip latch pivotably connecte... | 08/03/2004 |
| 6647932 | Compact boiler with tankless heater for providing heat and domestic hot water A small and compact boiler for providing hot water for indoor heating and domestic hot water and method of operation are provided. The boiler includes a three way valve configured to circulate boiler water through a heating circuit when indoor heat is req... | 11/18/2003 |
| 6594842 | Loading dock with segmented wide lip A dock leveler that is mounted in a recessed pit and having a deck as wide as necessary to provide access to the transport vehicle. A lip is mounted to the front of the deck of the leveler and pivoted in a conventional manner. At each side of the lip are ... | 07/22/2003 |
| 6546946 | Short-length reduced-pressure backflow preventor A double check valve reduced pressure backflow preventor assembly is configured to have a relatively small length, volume and/or weight. The assembly defines parallel, preferably coaxial, inlet and outlet directions. In one aspect, first and second check ... | 04/15/2003 |
| 6378548 | Varying size diaphragm valve assemblies utilizing diaphragm of uniform size A diaphragm valve assembly includes a valve housing having two or more fluid ports and defining both a valve chamber extending therebetween for fluid flow therethrough and an access port leading into the valve chamber. A bonnet covers the access port and ... | 04/30/2002 |
| 6370719 | Dock leveler lip construction A lip assembly for a dock leveler comprises a substantially flat plate forming a lip, and an integral hinge extending for substantially the width of the lip. The integral hinge in a first embodiment is formed by shaping a plate into an arcuate configurati... | 04/16/2002 |
| 6273175 | Overhead door and track therefor An overhead door for occluding an opening in a structure. The door includes a pair of tracks having inwardly facing surfaces which define a channel. A door panel is located intermediate the pair of tracks and moveable along a predetermined path of travel ... | 08/14/2001 |
| 6183231 | Clean-in-place gear pump A gear pump having shafts mounted with rolling element bearings and having mechanical seals on the face of the gears provides improved "clean-in-place" ability. Preferably, washer-like seals are mounted on the face of the gears with a suitable adhesive an... | 02/06/2001 |
| 6152163 | Switching valve for multi-chamber adsorbent air and gas fractionation system A unique switching valve for use with a multi-chamber adsorbent air and gas fractionation system for controlling the flow of fluid which comprises a valve housing including an inlet port, two outlet ports and an exhaust port and first valve and second val... | 11/28/2000 |
| 6139242 | Vehicle restraint with security device A vehicle restraint for preventing movement of a vehicle from a parked position has a frame mountable at a loading dock to position a vehicle restraint mechanism operably coupled to the frame. The vehicle restraint mechanism has a restraining member with ... | 10/31/2000 |
| 6125491 | Counterbalance for mechanical dock leveler A dock leveler has a deck pivotally mounted to a frame. A counterbalance mechanism uses a pair of pivoting links connected together at a common point with a tension spring that is coupled at the other end to the deck. The links together with the frame and... | 10/03/2000 |
| 6119307 | Overhead door with a plunger assembly having a wear indicator and improved panel construction An overhead door having two tracks each of which is designed to be mounted on the side of an opening in a building. Each track has a script-v shape in cross-section, and a groove or channel that runs along its longitudinal axis. One or more panels are pos... | 09/19/2000 |
| 6112471 | Adapter for mounting strike within cavity of door arrangement A prison door arrangement includes a cavity formed in a side edge of a door; an adapter releasably secured to the door and extending within the cavity; and a strike disposed within the cavity and releasably secured to the adapter. A method for installing ... | 09/05/2000 |
| 6095229 | Overhead door and track therefor An overhead door for occluding an opening in a structure. The door includes a pair of tracks having inwardly facing surfaces which define a channel. A door panel is located intermediate the pair of tracks and moveable along a predetermined path of travel ... | 08/01/2000 |
| 6046582 | Self-powered digital clamp meter A self-powered electrical clamp meter measures AC voltages in the range of 6 volts to 600 volts and AC currents in the range of 1 ampere to 300 amperes, and receives operating power from the source of the voltage or current being measured. The clamp meter... | 04/04/2000 |
| 6041844 | Overhead door and track therefor An overhead door for occluding an opening in a structure. The door includes a pair of tracks having inwardly facing surfaces which define a channel. A door panel is located intermediate the pair of tracks and moveable along a predetermined path of travel ... | 03/28/2000 |
| 5926890 | Dock leveler lip construction A dock leveler having a frame, a deck hingedly mounted at on end to the frame and a lip hingedly mounted to the deck at another thereof. The lip has a hinge tube affixed to the lip and a gusset joined to both the lip and the hinge tube. The gusset has an ... | 07/27/1999 |
| 5832554 | Dock leveler with cam assisted lip extension A dock leveler, typically powered by an electric actuator or other motive source has a frame and a deck pivotally mounted to the frame. The source of power to move the deck is coupled to the underside of the deck. An extendable lip is pivotally mounted to... | 11/10/1998 |
| 5826291 | Electrically actuated dock leveler A dock leveler having a frame adapted to be fixedly mounted at a dock with a deck, pivotally mounted to the frame at one end thereof, and having a pivotable lip at the other end. A spring is mounted to the deck and the frame and supports the deck. An elec... | 10/27/1998 |
| 5774920 | Electrically actuated dock leveler A dock leveler having a frame adapted to be fixedly mounted at a dock with a deck, pivotedly mounted to the frame at one end thereof, and having a pivotable lip at the other end. A spring is mounted to the deck and the frame and supports the deck. An elec... | 07/07/1998 |
| 5749282 | Building panel with double interlock joint and internal gutter A building panel particularly adapted for horizontal application. The panel presents inner and outer male connectors at the upper edge of the panel, and complimentary inner and outer female connectors at the lower edge of the panel. Gutter means is provid... | 05/12/1998 |
| 5709518 | Automatic wheel chock system A chocking device for securing a vehicle at a loading dock having a guide rail mountable to a driveway and a carriage movable on the guide rail. A drive mechanism, which may be hydraulic or electric is employed to advance said carriage from a stored posit... | 01/20/1998 |
| 5699825 | Double seat flow control valve A double seat flow control valve includes three pneumatic pistons enclosed within two air chambers to operate upper and lower valve disks for venting operations in addition to valve opening and valve closing operations. An air boost is provided for the up... | 12/23/1997 |
| 5653481 | Pipe clamp with live loading nut assembly A clamp with a live loading clamp nut assembly is provided for pipe joints and the like. The nut assembly includes a body member movable within a cage. A plurality of springs, such as spring washers, are employed in the cage to provide a stored spring ene... | 08/05/1997 |
| 5586356 | Automatic return to dock mechanism for mechanical dock leveler An automatic return to dock mechanism for a dockboard having a frame, a deck pivotally mounted to the frame and a lip pivotally mounted to an outboard end of said deck. The lip has an arm mounted to a lower surface. A crank mechanism comprises a pivoting ... | 12/24/1996 |
| 5586355 | Safety device for a vertically stored dock leveler A vertically storing dock leveler comprises a deck, a pivot coupling the leveler to the mounting pit to allow the deck the rotate from a stored vertical position to an operative horizontal position and a source of power to rotate the deck. A sensor is mou... | 12/24/1996 |
| 5553343 | Dock leveler with folding barrier lip A dock leveler has a frame mounted at a dock, a deck pivoted at one end to said frame and a lip pivotally attached to said deck at the other end thereof. The deck is movable between a first operable position where the deck is substantially horizontal and ... | 09/10/1996 |
| 5544381 | Dock leveler hydraulic circuit A dock leveler having a deck-assembly, a first hydraulic cylinder to power said deck assembly to a raised position, lip mounted to said deck assembly, and a second hydraulic cylinder for powering said lip into an extended position. An hydraulic power circ... | 08/13/1996 |
| 5409727 | Process for the production of low-calorie spreads This invention is for a process for producing a water-in-oil emulsion and edible margarine-like spread composition having a fat content of less than 80 percent by weight and having the approximate consistency of margarine, the process comprising forming a... | 04/25/1995 |
| 5352475 | Process for the production of low-calorie spreads This invention is for a process for producing a water-in-oil emulsion and edible margarine-like spread composition having a fat content of less than 80 percent by weight and having the approximate consistency of margarine, the process comprising forming a... | 10/04/1994 |
| 5344364 | Circulation air distribution system A circulation air distributing system for supplying fresh conditioned, hot or cold air through the use of cells metal cellular flooring. Distribution box inserts are uniformly distributed along the cellular flooring units prior to concrete placement. Sele... | 09/06/1994 |
| 5317846 | Underfloor wire distributing reinforced concrete floor structure A reinforced concrete floor structure having reinforced concrete beams and girders supporting a metal subfloor and a monolithic concrete layer. The metal subfloor comprises alternating first and second flooring units wherein the first flooring units span ... | 06/07/1994 |
| 5181360 | Standing-seam roof panel system A standing-seam roof system with elevated sub-purlins supported on concealed slip assemblies is provided. A uniform thermal-insulating value of the roof system is maintained by elevating the roof panels substantially above the undeformed depth of the ther... | 01/26/1993 |
| 5177868 | Process of making an insulated door A door assembly and method for making a door assembly that has a front steel skin with a predetermined embossed pattern, a back steel skin that has a substantially textured flush surface and a polystyrene core one side of which has an embossed design subs... | 01/12/1993 |
