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| Number | Title | Issue Date |
| 7204463 | Balancer device for hanging article A balancer device, which is adapted for incorporating with a hanging article having two sidewalls, a front side, and an opposed rear side facing towards a supporting surface, includes two balancing wings each having an inner end, and two connecting units provided at... | 04/17/2007 |
| 7093322 | Counter-balance weight for a modular safety rail A counter-balance weight for a modular safety rail comprises a substantially solid body which defines a passage to receive an end of an elongate spacer member, a recess region to house a retainer of a kind selectively securable to the elongate spacer member, an acce... | 08/22/2006 |
| 7055215 | Hinge assembly In one exemplary embodiment, a hinge assembly having a counterbalance spring, a friction mechanism, and an independent pop-up element attached to a shaft. In one embodiment, a hinge assembly having a counterbalancing spring and an independent pop-up element attaches... | 06/06/2006 |
| 7028371 | Safety brake for block and tackle window balance The present invention relates to inertial braking system for spring-loaded devices, such as block and tackle window balances incorporated in single and double hung window assemblies. In one embodiment, a block and tackle window balance includes a translatable block ... | 04/18/2006 |
| 6142426 | Crossing gate counterweight adjustment A screw-threaded counterweight adjustment apparatus is journaled in end journals provided with brackets for attachment to the interior of a railroad crossing gate arm casing preferably by jam-type threaded fittings. A traveler is threaded over an elongate... | 11/07/2000 |
| 6112336 | Hinged cover lifting and lowering device An apparatus for manipulating a cover or lid between horizontal and upright positions. A foot-actuated device is connected by a first cable to a lift mechanism positioned about the lid's pivot. The first cable lies over the profile of an oblong cam in the... | 09/05/2000 |
| 5845916 | Handle for infant stroller A handle for an infant stroller includes a pair of substantially parallel opposed arms connected with the frame of the stroller and extending upwardly therefrom. A gripping section interconnects the upper ends of the arms. The gripping section includes a ... | 12/08/1998 |
| 5704672 | Stand-up snow shovel with flexible auxiliary handle A snow shovel having a conventional blade (10) and handle (13) includes an auxiliary handle (18) tethered to the shovel by means of a resilient and/or flexible cord (19). The cord may be a folded bungee cord, the ends (20, 21) of which are secured to hole... | 01/06/1998 |
| 5456130 | Load balancing arm A load balancing arm is shown and described as having improved control including a programmable control element and electronic air regulation to provide precise and controllable lifting force on a load. The disclosed load balancing arm responds to slight ... | 10/10/1995 |
| 5415057 | Balancer device for a robot arm A balancer device for balancing the moment generated by gravity on a robot arm, which is mounted at the one end thereof for rotation about a rotation axis and having an articulation on the opposite end, comprises a fluid-pressure operated spring means (7)... | 05/16/1995 |
| 5134805 | Fabric treatment tenter device with counterbalanced roof A fabric tenter device having a pivotally mounted roof which may carry a nozzle box is provided with a counterbalance assembly enabling the roof and box to be pivotally shifted from the tenter covering to an open position by manual lifting forces. The cou... | 08/04/1992 |
| 5048153 | Spa cover lift mechanism A lift mechanism (15) for the cover (13) of a portable spa or hot tub (11) comprising a pair of compressible struts (21) and upper and lower hinge mechanisms (24 and 23) is disclosed. The preferred lower hinge mechanism (23) includes a torque tube (25) ro... | 09/17/1991 |
| 4901591 | Device for balancing forces, in particular weight, acting on a robot arm or the like A device for balancing the forces acting on a robot arm (10) hinged to rotate about an axis (A), said device comprising an even number of auxiliary parts (241, 242) hinged about respective mutually parallel axes (B1, B | 02/20/1990 |
| 4019442 | Bulkhead assembly and counterbalance mechanism therefor A movable bulkhead for partitioning a truck body or the like is pivotally supported on an overhead shaft. The shaft extends transversely between a pair of trolleys which ride along tracks and are capable of differential movement thereon. A second pair of ... | 04/26/1977 |
