Abstract: In one aspect, a track structure usable by a wheeled vehicle for hauling a payload up an inclined enclosed passageway comprises a hollow rigid center rail member configured to act as both a center rail for the wheeled vehicle and as a ventilation duct. Opposite lateral faces of the hollow center rail member have respective wheel contact surfaces grippable by an opposed pair of inwardly-biased drive wheels of the wheeled vehicle. Rail support structure depends from the hollow center rail member. An elevated pair of rails is attached to the rail support structure, the rails being on opposite sides of and substantially parallel to the hollow center rail member. Each rail is supported by the rail support structure so as to provide an upper, lower, and lateral surface suitable for rolling engagement by a weight-bearing wheel, undermount wheel, and guide wheel, respectively, of the wheeled vehicle.

Abstract: In one aspect, a track structure usable by a wheeled vehicle for hauling a payload up an inclined enclosed passageway comprises a hollow rigid center rail member configured to act as both a center rail for the wheeled vehicle and as a ventilation duct. Opposite lateral faces of the hollow center rail member have respective wheel contact surfaces grippable by an opposed pair of inwardly-biased drive wheels of the wheeled vehicle. Rail support structure depends from the hollow center rail member. An elevated pair of rails is attached to the rail support structure, the rails being on opposite sides of and substantially parallel to the hollow center rail member. Each rail is supported by the rail support structure so as to provide an upper, lower, and lateral surface suitable for rolling engagement by a weight-bearing wheel, undermount wheel, and guide wheel, respectively, of the wheeled vehicle.

Abstract: The present disclosure includes barrier devices for use in an apparatus used to form lapping plates. The barrier devices can contain liquid on the surface of the lapping plate platen. The present disclosure also involves related methods.

Abstract: In one aspect, a track structure usable by a wheeled vehicle for hauling a payload up an inclined enclosed passageway comprises a hollow rigid center rail member configured to act as both a center rail for the wheeled vehicle and as a ventilation duct. Opposite lateral faces of the hollow center rail member have respective wheel contact surfaces grippable by an opposed pair of inwardly-biased drive wheels of the wheeled vehicle. Rail support structure depends from the hollow center rail member. An elevated pair of rails is attached to the rail support structure, the rails being on opposite sides of and substantially parallel to the hollow center rail member. Each rail is supported by the rail support structure so as to provide an upper, lower, and lateral surface suitable for rolling engagement by a weight-bearing wheel, undermount wheel, and guide wheel, respectively, of the wheeled vehicle.

Abstract: The present disclosure includes barrier devices for use in an apparatus used to form lapping plates. The barrier devices can contain liquid on the surface of the lapping plate platen. The present disclosure also involves related methods.

Abstract: In one aspect, a track structure usable by a wheeled vehicle for hauling a payload up an inclined enclosed passageway comprises a hollow rigid center rail member configured to act as both a center rail for the wheeled vehicle and as a ventilation duct. Opposite lateral faces of the hollow center rail member have respective wheel contact surfaces grippable by an opposed pair of inwardly-biased drive wheels of the wheeled vehicle. Rail support structure depends from the hollow center rail member. An elevated pair of rails is attached to the rail support structure, the rails being on opposite sides of and substantially parallel to the hollow center rail member. Each rail is supported by the rail support structure so as to provide an upper, lower, and lateral surface suitable for rolling engagement by a weight-bearing wheel, undermount wheel, and guide wheel, respectively, of the wheeled vehicle.

Abstract: The present disclosure includes barrier devices for use in an apparatus used to form lapping plates. The barrier devices can contain liquid on the surface of the lapping plate platen. The present disclosure also involves related methods.

Abstract: The present disclosure includes barrier devices for use in an apparatus used to form lapping plates. The barrier devices can contain liquid on the surface of the lapping plate platen. The present disclosure also involves related methods.

Abstract: The disclosed technology concerns methods, apparatus, and systems for using telemetry data from a large number of remote computing devices to address complex problems otherwise prone to subjective inaccuracies. Particular embodiments disclosed herein involve classifying the difficulty of solving (or completing) an objective presented by a certain item of digital content. For instance, certain example embodiments involve collecting telemetry data from hundreds or thousands of users engaging with a respective content item, and, based at least in part on that telemetry data, assigning a difficulty classification to the content item.

Abstract: The present disclosure includes barrier devices for use in an apparatus used to form lapping plates. The barrier devices can contain liquid on the surface of the lapping plate platen. The present disclosure also involves related methods.

Abstract: A method is disclosed for using crowdsourcing to identify known-solvable data states which have been identified by users as leading to a solution to a scenario with defined constraints. In one example where the scenario is a computer card game, a number of users may be provided with an initial data state in the form of the cards being in a particular order. Where a user successfully completes the card game to a desired solution state, the initial data state of the cards may be stored as a known-solvable data state.

Abstract: An apparatus and associated method are provided for positioning a workpiece. A workpiece positioner has a fixed base, and a support member is connected to the base by a joint that permits selectively articulating the support member with respect to the base. A plate defines a feature sized for operably supporting the workpiece. A connector is used to connect the plate to the support member. The connector fixes the plate in articulation with the support member so that a selected articulation of the support member with respect to the base defines a corresponding plane in which the plate is disposed. The connector also permits sliding movement of the plate in any direction within the corresponding plane to orient the workpiece in a desired position.

Abstract: An apparatus and associated method are provided for positioning a workpiece. A workpiece positioner has a fixed base., and a support member is connected to the base by a joint that permits selectively articulating the support member with respect to the base. A plate defines a feature sized for operably supporting the workpiece. A connector is used to connect the plate to the support member. The connector fixes the plate in articulation with the support member so that a selected articulation of the support member with respect to the base defines a corresponding plane in which the plate is disposed. The connector also permits sliding movement of the plate in any direction within the corresponding plane to orient the workpiece in a desired position.

Abstract: The universal vase holder is an article for holding a vase, pot, or ornament to a supporting object. The universal vase holder comprises: a base; a brace attached to said base and extending downward from said base; a first telescoping member telescopically attached to said base; a second telescoping member telescopically attached to said base; a first arm attached to said first telescoping member and extending rearward from said first telescoping member; a second arm attached to said second telescoping member and extending rearward from said second telescoping member; and a support attached to said base and extending forward from said base.

Abstract: A system and method for selective regression testing is described. The system and method provides a test script database identifying multiple portions of a first low level code (e.g., assembly code) and tests associated with at least one of the multiple portions of first low level code. A comparator may identify a change set between the multiple portions of the first low level code and corresponding portions of modified low level code. After the database has been queried by a changed set query module, using the identified change set as key, an optimum or reduced test suite is identified from the database, to be run on the modified low level code, thereby to verify the change set.

Abstract: An actuator assembly including one or more actuator arms, wherein each of the actuator arms defines a clasp hole and a clamp-opening hole and a slot running between the clasp hole and clamp-opening hole, and optionally, a second slot running from the clasp hole to a distal end of the actuator arm, thereby creating two clasp fingers. A flex suspension assembly is included with a protrusion, such as a boss and a head on a distal end. The flex suspension assembly is coupled to the actuator arm by resiliently increasing the diameter of the clasp hole so as to allow the boss on the flex suspension assembly to be inserted into the clasp hole. With the boss is inserted, the clasp hole is allowed to revert to its original diameter, thereby clamping the boss in the clasp hole. A method for assembly is also provided.

Abstract: An actuator assembly including one or more actuator arms, wherein each of the actuator arms defines a clasp hole and a clamp-opening hole and a slot running between the clasp hole and clamp-opening hole, and optionally, a second slot running from the clasp hole to a distal end of the actuator arm, thereby creating two clasp fingers. A flex suspension assembly is included with a protrusion, such as a boss and a head on a distal end. The flex suspension assembly is coupled to the actuator arm by resiliently increasing the diameter of the clasp hole so as to allow the boss on the flex suspension assembly to be inserted into the clasp hole. With the boss is inserted, the clasp hole is allowed to revert to its original diameter, thereby clamping the boss in the clasp hole. A method for assembly is also provided.