Abstract: In an aspect, a pivot joint for a collapsing foot-deck-based vehicle is described, comprising a foot deck, at least two wheels coupled to the foot deck, and a handlebar assembly coupled to the foot deck via a locking pivot joint, also referred to as a locking swivel joint, the handlebar assembly comprising at least one handle, the locking pivot joint having a pivot axis that is generally unparallel with a horizontal plane defined by the lowermost surfaces of the at least two wheels, the handlebar assembly being selectively pivotable via the locking pivot joint between a riding configuration in which the handle is generally distal from the foot deck and a collapsed configuration in which the handle is generally proximal to the foot deck.

Abstract: In an aspect, a pivot joint for a collapsing foot-deck-based vehicle is described, comprising a foot deck, at least two wheels coupled to the foot deck, and a handlebar assembly coupled to the foot deck via a locking pivot joint, also referred to as a locking swivel joint, the handlebar assembly comprising at least one handle, the locking pivot joint having a pivot axis that is generally unparallel with a horizontal plane defined by the lowermost surfaces of the at least two wheels, the handlebar assembly being selectively pivotable via the locking pivot joint between a riding configuration in which the handle is generally distal from the foot deck and a collapsed configuration in which the handle is generally proximal to the foot deck.

Abstract: In an aspect, a pivot joint for a collapsing foot-deck-based vehicle is described, comprising a foot deck, at least two wheels coupled to the foot deck, and a handlebar assembly coupled to the foot deck via a locking pivot joint, also referred to as a locking swivel joint, the handlebar assembly comprising at least one handle, the locking pivot joint having a pivot axis that is generally unparallel with a horizontal plane defined by the lowermost surfaces of the at least two wheels, the handlebar assembly being selectively pivotable via the locking pivot joint between a riding configuration in which the handle is generally distal from the foot deck and a collapsed configuration in which the handle is generally proximal to the foot deck.

Abstract: A foot-deck-based vehicle having an adjustable steering characteristic is provided. The foot-deck-based vehicle has a foot-deck with a front end, a rear end, and at least one rear wheel proximal to the rear end. A front wheel assembly is coupled to the foot-deck proximal to the front end to pivot relative to the foot-deck about a front wheel assembly pivot axis that is at an acute angle to a vertical axis when the foot-deck-based vehicle is upright. The front wheel assembly includes at least one front wheel rotatably coupled to a front wheel support. A steering characteristic adjustment structure adjustably controls a steering characteristic of the foot-deck-based vehicle.

Abstract: In an aspect, a collapsing foot-deck-based vehicle is provided and includes a foot deck, at least two wheels coupled to the foot deck, and a handle structure coupled to the foot deck via a locking pivot joint. The handle structure includes at least one handle. The locking pivot joint has a pivot axis that is generally unparallel with a horizontal plane defined by the lowermost surfaces of the at least two wheels. The handle structure is selectively pivotable via the locking pivot joint between a riding configuration in which the handle is generally distal from the foot deck for gripping by a rider of the foot-deck-based vehicle, and a collapsed configuration in which the handle is generally proximal to the foot deck.

Abstract: In an aspect, a collapsing foot-deck-based vehicle is provided and includes a foot deck, at least two wheels coupled to the foot deck, and a handle structure coupled to the foot deck via a locking pivot joint. The handle structure includes at least one handle. The locking pivot joint has a pivot axis that is generally unparallel with a horizontal plane defined by the lowermost surfaces of the at least two wheels. The handle structure is selectively pivotable via the locking pivot joint between a riding configuration in which the handle is generally distal from the foot deck for gripping by a rider of the foot-deck-based vehicle, and a collapsed configuration in which the handle is generally proximal to the foot deck.

Abstract: A foot-deck-based vehicle having an adjustable steering characteristic is provided. The foot-deck-based vehicle has a foot-deck with a front end, a rear end, and at least one rear wheel proximal to the rear end. A front wheel assembly is coupled to the foot-deck proximal to the front end to pivot relative to the foot-deck about a front wheel assembly pivot axis that is at an acute angle to a vertical axis when the foot-deck-based vehicle is upright. The front wheel assembly includes at least one front wheel rotatably coupled to a front wheel support. A steering characteristic adjustment structure adjustably controls a steering characteristic of the foot-deck-based vehicle.

Abstract: A foot-deck-based vehicle having an adjustable steering characteristic is provided. The foot-deck-based vehicle has a foot-deck with a front end, a rear end, and at least one rear wheel proximal to the rear end. A front wheel assembly is coupled to the foot-deck proximal to the front end to pivot relative to the foot-deck about a front wheel assembly pivot axis that is at an acute angle to a vertical axis when the foot-deck-based vehicle is upright. The front wheel assembly includes at least one front wheel rotatably coupled to a front wheel support. A steering characteristic adjustment structure adjustably controls a steering characteristic of the foot-deck-based vehicle.

Abstract: In a first aspect, a wearable device is provided for mounting to a foot of a user. The wearable device includes a support structure having a longitudinal axis, and having an interior. The support structure is positioned to support a foot of a user, wherein the support structure has a ground engagement surface. The wearable device further includes a first wheel shaft having a first wheel connected thereto, and a second wheel shaft having a second wheel connected thereto. The first and second wheel shafts are connected to the support structure and are movable between a stowage position in which the first and second wheel shafts hold the first and second wheels above the ground engagement surface and a rolling position in which the first and second wheel shaft hold the first and second wheels below the ground engagement surface. In both the stowage and rolling positions, the first and second wheels are laterally outside of the interior of the support structure.

Abstract: In an aspect, a pivot joint for a collapsing foot-deck-based vehicle is described, comprising a foot deck, at least two wheels coupled to the foot deck, and a handlebar assembly coupled to the foot deck via a locking pivot joint, also referred to as a locking swivel joint, the handlebar assembly comprising at least one handle, the locking pivot joint having a pivot axis that is generally unparallel with a horizontal plane defined by the lowermost surfaces of the at least two wheels, the handlebar assembly being selectively pivotable via the locking pivot joint between a riding configuration in which the handle is generally distal from the foot deck and a collapsed configuration in which the handle is generally proximal to the foot deck.

Abstract: A foot-deck-based vehicle having an adjustable steering characteristic is provided. The foot-deck-based vehicle has a foot-deck with a front end, a rear end, and at least one rear wheel proximal to the rear end. A front wheel assembly is coupled to the foot-deck proximal to the front end to pivot relative to the foot-deck about a front wheel assembly pivot axis that is at an acute angle to a vertical axis when the foot-deck-based vehicle is upright. The front wheel assembly includes at least one front wheel rotatably coupled to a front wheel support. A steering characteristic adjustment structure adjustably controls a steering characteristic of the foot-deck-based vehicle.

Abstract: Braking and centering mechanisms for foot-deck-based vehicles are described. At least one of the at least one rear wheel of the foot-deck-based vehicle is a braking wheel that is pivotally connected to the foot-deck for swivel movement about a rear swivel axis through a range of angular positions. The braking mechanism comprises a brake member coupled to the rear end of the foot-deck. The brake member is configured to move between a braking position in which the brake member is depressed towards the braking wheel and drives a brake surface to a frictionally engaging position at which the brake surface frictionally engages the braking wheel to reduce a speed of the foot-deck-based vehicle regardless of the angular position of the braking wheel within the range, and a non-braking position in which the brake member permits movement of the brake surface away from the braking wheel.

Abstract: There are provided a method, a system and a computer program product for minimizing data transfer latency between redundant storage controllers in a network-based storage controller system that utilizes adaptive data throttling. Each corresponding redundant storage controller calculates average time latency for round trip communications between the corresponding redundant storage controller and the other redundant storage controllers during a fixed monitoring period. The corresponding redundant storage controller, at the end of each fixed monitoring period, compares the average time latency to a fixed latency. The corresponding redundant storage controller selectively throttles data transfer between the corresponding redundant storage controller and a server and data transfer between the corresponding redundant storage controller and a back-end storage, based on the comparison.

Abstract: There are provided a method, a system and a computer program product for minimizing data transfer latency between redundant storage controllers in a network-based storage controller system that utilizes adaptive data throttling. Each corresponding redundant storage controller calculates average time latency for round trip communications between the corresponding redundant storage controller and the other redundant storage controllers during a fixed monitoring period. The corresponding redundant storage controller, at the end of each fixed monitoring period, compares the average time latency to a fixed latency. The corresponding redundant storage controller selectively throttles data transfer between the corresponding redundant storage controller and a server and data transfer between the corresponding redundant storage controller and a back-end storage, based on the comparison.

Abstract: A method for minimizing latency of data transfer between the redundant storage controllers in a network-based storage controller system that utilizes adaptive data throttling. Each redundant storage controller monitors latency for round trip communications between the redundant controllers by calculating a time required to mirror a write to the other controller and receive a write acknowledge. An average latency for round trip communications between the redundant controllers during a fixed monitoring period is calculated, and at the end of each fixed monitoring period, the average latency is compared to a fixed latency to access the average time latency for mirroring writes is good, acceptable or unacceptable. If the average time latency is good, the one controller reduces or disables throttling for data transfers between the one controller and the server, and between the one controller and back-end storage, increasing a number of this type of data transfer that can be executed in parallel.

Abstract: A method for minimizing latency of data transfer between the redundant storage controllers in a network-based storage controller system that utilizes adaptive data throttling. Each redundant storage controller monitors latency for round trip communications between the redundant controllers by calculating a time required to mirror a write to the other controller and receive a write acknowledge. An average latency for round trip communications between the redundant controllers during a fixed monitoring period is calculated, and at the end of each fixed monitoring period, the average latency is compared to a fixed latency to access the average time latency for mirroring writes is good, acceptable or unacceptable. If the average time latency is good, the one controller reduces or disables throttling for data transfers between the one controller and the server, and between the one controller and back-end storage, increasing a number of this type of data transfer that can be executed in parallel.

Abstract: A method and apparatus for recovery from faults in a loop network (500) is provided. The loop network (500) has a plurality of ports (520, 530, 532, 534) serially connected with means for bypassing the ports (520, 530, 532, 534) from the loop network (500). A control device (522, 524) is provided with bypass control over at least one of the ports (530, 532, 534). A host means (502) sends a command to the control device (522, 524) at regular intervals and the control device (522, 524) has a counter which restarts a time period at the receipt of each command. If the time period expires, the control device (522, 524) activates the means for bypassing all the ports (530, 532, 534) under its control. The loop network (500) may have two loops (516, 518) with at least some of the ports (520, 530, 532, 534) common to both loops (516, 518).

Abstract: An arrangement and method for update of configuration cache data in a disk storage subsystem in which a cache memory (110) is updated using two-phase (220, 250) commit technique. This provides the advantage that known changes to the subsystem do not require an invalidate/rebuild style operation on the cache. This is especially important where a change will invalidate the entire cache.

Abstract: A method for migrating data between heterogeneous data storage devices within a storage area network is disclosed. A first virtualizer presents stored data as a first virtual disk, and then communicates a managed disk representation of the first virtual disk to a second virtualizer. After receiving the managed disk representation, the second virtualizer virtualizes the stored data from the managed disk representation as a second virtual disk. At such point, the stored data can be progressively migrated from the first virtualizer to the second virtualizer.

Abstract: A storage control apparatus, in communication with a cluster of storage devices in a storage network having plural administrator systems, comprises a cluster lock requester component, a cluster lock receiver component and a configuration component, wherein, responsive to receipt of a cluster lock by said cluster lock receiver component, the configuration component is operable to configure a logical resource object within said cluster. The apparatus may also include a cluster lock granter component operable to grant a cluster lock to the cluster lock receiver component responsive to said cluster lock requester component. A method of operating a storage control apparatus includes method steps corresponding to functional components of an apparatus and may be embodied in computer program codes.