Class 49/387 - Distinct weight

Subclass of Class 49 - Movable or removable closures
Definition: Device wherein the biasing means includes a disparate weight,
No. of patents: 23
Last issue date: 04/15/2008

Number	Title	Issue Date
7356968	Polymer composite basement door Cellar or bulk head doors having sidewalls are provided which are made of a polymer and which are strong, durable, attractive, virtually maintenance free, easily assembled, have connection and anchorage points which allow the door assembly to be used over a wide tem...	04/15/2008
7114706	Frame for mounting a gate on a slope A frame for bracing a gate includes a first and second upright brace having respective outboard edges positioned flush to opposite vertical edges of the gate. First upper and lower cross braces have respective opposite ends received within upper and lower ends of th...	10/03/2006
6896244	Gate bracket systems and methods A bracket system for forming gate assemblies. Four separate brace members are provided, and two of the brace members are rigidly attached to hinge assemblies. The brace members are adapted to be attached to support members to form the corners of a gate box functioni...	05/24/2005
6792716	Barrier gate A barrier gate includes a crossbar selectively pivoting between a saddle post and anchor post. The crossbar includes a first end and a second end. The first end of the cross bar is pivotally secured to the anchor post such that the second end of the crossbar may be ...	09/21/2004
6751906	Adjustable tension gate Z-bracket An adjustable tension gate bracket for application to fencing panels, specifically gate panel, applied to the frame components of the gate panel with diagonally adjustable interlocking and engaging upper and lower members for adjusting the swing and pitch of the gat...	06/22/2004
5850672	Apparatus or kit for closing sliding closure Apparatus or kit is provided for use in a sliding closure for the automatic return of the sliding closure to its closed position after being moved to an open position, and includes a corner insert member adapted to fit within an upper corner structure of ...	12/22/1998
5788406	Double pivot semi-automatic manhole cover lifting device A device to assist in the opening of a manhole cover has a biasing member such as a spring and a pivot rod or rods. The rods and spring are each pivotably attached to first and second mounting brackets. The first mounting bracket is attached to a skirt fo...	08/04/1998
5605014	Door apparatus for rest room A door apparatus for a rest room includes a wall member defining a predetermined space and an opening for an entrance and an exit thereof; a door body for opening or shutting the opening, having a substantially half-cylindrical shape, being rotatable abou...	02/25/1997
5564514	Adjustable tractor hood lift mechanism A pivotally mounted hood for a tractor is disclosed wherein a gas spring, provided to offset the weight of the hood to facilitate the movement of the hood between opened and closed positions, is mounted to the chassis via a multi-position bracket having m...	10/15/1996
4669625	Easy opening lid A simple, compact counterweight mechanism for a lid for a sub-surface container. A straight rigid beam extends from front to rear within the container. Front portions of the beam are connected to the overlying lid, middle portions of the beam are pivotall...	06/02/1987
4649598	Energy saver sliding door closer including a valved weight An energy saver door closer for use with a sliding door. A long cylindrical housing is attached to one vertical edge of the sliding door, a weight is in the cylinder and a cable connects the weight over a pulley in the top of the cylinder to an anchor in ...	03/17/1987
4616444	Radio controlled gate opener A swinging gate is operated in one direction between open and closed positions by a winch and cable system driven by an electric motor which may be controlled remotely by radio, the winch and motor being carried on a support arm extending from a gatepost ...	10/14/1986
4574523	Vehicle barricade or maximum security barrier A vehicle barricade has two concrete walls contiguously disposed along either side of a roadway for defining a checkpoint. A shaft is pivotally secured to the roadway and extends transversely between the concrete walls. A barrier plate is pivotal with the...	03/11/1986
4516354	Counterweight door structure A counterweight door structure includes a door having a pair of upwardly extending arms for supporting counterweights at positions in spaced relation above the top edge of the door. The door is mounted for pivotal movement about a generally horizontal axi...	05/14/1985
4475310	Bump gate A gate member has its lower end pivotally coupled to the lower ends of two spaced apart posts for pivotal movement about a horizontal axis whereby the gate member may be moved between an upright closed position and a lower open position. Closing means is ...	10/09/1984
4463665	Pressure plate adjusting device for grain whitening apparatus Disclosed is an improvement in a pressure plate adjusting device for grain whitening apparatus which is capable of automatically and precisely adjusting the pressure of a pressure plate disposed at a rice outlet of a whitening chamber. The automatic adjus...	08/07/1984
4341344	Automatic draft controller A draft control plate, which automatically opens or closes to provide efficient draft conditions in a furnace, is provided with both horizontal and vertical counterbalance devices which respectively permit adjustment of the initial position of the plate a...	07/27/1982
4334389	Panel with counterweight A panel with a counterweight for opening and closing and/or bridging an opening or a space. In a preferred embodiment the construction is such that when the panel is in its closed position, the counterweight lies substantially in the same plane as the pan...	06/15/1982
4152871	Vehicle barricade A vehicle barricade including a barrier plate which can be raised or lowe and a counterweighted sector mounted near the side of the barrier plate. The counterweight is mounted on the sector so that the barrier plate will remain in the raised or lowered p...	05/08/1979
4083150	Door construction An improved, one piece, counterbalanced, canopy-type door. The door has a counterweight tube fixed to and extending along the upper edge thereof, which tube contains a counterweight mass. The counterweight tube projects outwardly beyond the front surface ...	04/11/1978
4035955	Boom gate A boom gate comprises a first-class lever counterweighted at one end adjacent to which is the lever fulcrum. The fulcrum is displaceable lengthwise of the lever through a short distance sufficient to cross the center of gravity of the lever. This movement...	07/19/1977
4014486	Door activated airborne stair structure An air stair-door combination for an aircraft is described in which interference between the door and the stairway in opening and closing thereof is eliminated by delayed motion of the stairway until the door is moved through a significant portion of its ...	03/29/1977

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Class 49/387 - Distinct weight