Matches 1 - 50 out of 109 1 2 3 >
Match Document Document Title
7343958 Overhead door lift system  
A garage door cable drum is disclosed for a sectional overhead door of a type having a substantially non-linear lift-weight to lift-height characteristic. The drum includes a generally spiral cable...
7155778 Block and tackle window balance with bottom guide roller  
Disclosed are apparatus for a block and tackle window balance to be incorporated in single and double hung window assemblies. In one embodiment the block and tackle window balance includes a roller...
7059379 Low head room overhead door system with adjustable short radius track section  
A universal overhead door system includes a pair of horizontal track members, a pair of vertical track members and a pair of track radius members interconnecting the horizontal and vertical track...
6598264 Block and tackle window balance with bottom guide roller  
Disclosed are apparatus for a block and tackle window balance to be incorporated in single and double hung window assemblies. In one embodiment the block and tackle window balance includes a roller...
6502281 Plug for operatively connecting torsion springs to overhead shafts of counterbalancing systems used for garage doors and the like  
A plug for use in a counterbalancing mechanism of a cable-operated door. The plug is mounted about an overhead shaft and used for operatively connecting the overhead shaft to a torsion spring...
5949810 Laser guide line system with cylindrical optic element  
A robust and simple laser guideline system provides a precisely located line image by passing a laser beam through a perpendicularly oriented transparent cylinder. The cylinder may be rotated into...
5930865 Extension spring-type assembly for raising sectional door  
The assembly comprises an extension spring anchored at one end to a winch mounted to the door opening frame. A double-grooved pulley is mounted on a plate secured to the free end of the spring. A...
4953256 Counterbalance mechanism  
A counterbalance mechanism for negating the force of gravity when moving a display cabinet shelf up or down. The mechanism has a torsion spring counterbalance on a shaft extending the width of the...
4882806 Counterbalancing torsion spring mechanism for devices which move up and down and method of setting the torsion springs thereof  
Counterbalancing mechanism for a garage door or other device in which a torsion spring end member is fastened to a second member to which it is connected during normal operation of the...
4784010 Electric robotic work unit  
An electric robot having a base unit which is rotatable about a vertical first axis is provided with a horizontal second axis to which is pivotally mounted a vertical arm. At the other end of the...
4768762 Means and method to counterbalance the weight of a body  
The weight of a pivoted body is counterbalanced by a spring acting on a cam connected to that body to pivot therewith. A band, connected to that spring, attaches to the cam and wraps around the...
4756204 Counterbalance assembly for rotatable robotic arm and the like  
A counterbalance assembly for use with a rotatable arm in a robotic manipulator, wherein such arm is rotated about a rotation axis. The assembly further includes one or more compression springs for...
4753128 Robot with spring pivot balancing mechanism  
A robot including a balancing mechanism or balancer with a compression spring which flexes to compensate for the gravitational moment between an arm assembly and a base of the robot. The...
4383455 Arm with gravity-balancing function  
Arm having a gravity-balancing function effective for use in welding robots as well as robots employed in a variety of industrial fields. Projectively provided over the fulcrum of an arm (1) is a...
4346787 Energy recovery device  
The energy recovery device includes a housing having a central shaft which is connected to a lever operating a work-load system capable of generating work-load forces. The central shaft is also...
4165121 Device for opening and closing a side plate of a loading box on a motor truck under no-load condition  
In a device for opening and closing a side plate of a loading box on a motor truck under no-load condition wherein the side plate is outwardly openably hinged at its bottom edge to the outer side...
4133074 Spring assisted door construction  
A spring assisted cover construction for an opening is disclosed which is easily opened and which can be laid back adjacent the opening essentially parallel to the plane of the opening if desired....
3766600 LID COUNTERBALANCE MECHANISM  
A counter balance mechanism including a cabinet mounted stationary hinge part; a movable hinge part pivotally mounted on the stationary hinge part and connected for conjunctive vertical swinging...
3745608 COUNTER BALANCE SUPPORT  
A mechanism for counterbalancing a cabinet lid for swinging movements about an independent, relatively spaced hinge support; the mechanism being characterized as producing substantially no...
3503092 DOOR BALANCE MECHANISM  
3447190 COUNTERBALANCING LID SUPPORT  
3375545 Hinge construction for swinging overhead door  
3254364 Jamb type hinge for overhead doors  
3199140 Gate for conveyors  
3122775 Counterbalance spring retainer  
3051523 Counterbalanced truck bed lid  
3038535 Upwardly acting door having a torsion spring counterbalance  
2973561 Panel mounted for movement between a vertical position, a horizontal position, and a position extended horizontally therefrom  
2844431 Booster arm for drop head sewing machine  
2839938 Balancing mechanism  
2827003 Combination skylight and fire vent construction  
2751624 Spring anchor unit for overhead swinging doors  
2743476 Lift hinge for automobiles  
2742662 Door operator  
2732966 Title is not available  
2731011 Stove construction  
2725003 Sheet metal closures for hatchways  
2724857 Control arm and counterbalance for overhead door  
2721547 Closure mechanism for a cooking range oven  
2712670 Garage door hinge  
2704376 Door counterbalance structure  
2695604 Cooking range door mounting  
2686340 Self-balancing door  
2684238 Spring connecting means  
2668980 Garage door opening means  
2660765 Door latch  
2652584 Garage door supporting hardware  
2612396 Lock for upward acting doors  
2603842 Tilting door assembly  
2603826 Multiple pintle hinge for overhead doors  
Matches 1 - 50 out of 109 1 2 3 >