Abstract: A collapsible Wheeled Walker with two side frames and two height adjustable upper body supports. The apparatus includes a plurality of wheel direction locks each coupled to a wheel and adapted to lock the wheel in fixed moving direction or to release the wheel to turn freely. The apparatus may include a seat that is slidably attached to the two side frames and is movable between a front position for walking inside the frames and a rear position sitting. The apparatus may be converted to a transport chair by locking front wheel and releasing the rear wheels, and sliding the movable seat to the rear position. It may include an X-folder that facilitates collapsing the Walker to a small footprint. It may also include two forearm gutters as part of the upper body supports that give the user an upright walking posture for health benefits.

Abstract: A collapsible upright wheeled walker with adjustable armrests that support sufficient user upper-body weight to facilitate a natural upright gait and provide unassisted mobility for a wide range of mobility-impaired individuals. The apparatus may be easily and quickly folded (and unfolded) and may include bilateral stabilizing wheel suspensions to facilitate navigation over uneven terrain. The apparatus includes a frame-stiffening folder assembly and may also include mechanical brakes, an adjustable upper armrest assembly with removable padded forearm supports and two pairs of handles, at least one of which is disposed sufficiently forward to place the user within the polygonal footprint defined by the front and rear wheels to provide support without leaning, stooping, or risking falls.

Abstract: A collapsible upright wheeled walker with adjustable armrests that support sufficient user upper-body weight to facilitate a natural upright gait and provide unassisted mobility for a wide range of mobility-impaired individuals. The apparatus may be easily and quickly folded (and unfolded) and may include bilateral stabilizing wheel suspensions to facilitate navigation over uneven terrain. The apparatus includes a frame-stiffening folder assembly and may also include mechanical brakes, an adjustable upper armrest assembly with removable padded forearm supports and two pairs of handles, at least one of which is disposed sufficiently forward to place the user within the polygonal footprint defined by the front and rear wheels to provide support without leaning, stooping, or risking falls.

Abstract: A collapsible upright wheeled walker with adjustable armrests that support sufficient user upper-body weight to facilitate a natural upright gait and provide unassisted mobility for a wide range of mobility-impaired individuals. The apparatus may be easily and quickly folded (and unfolded) and may include bilateral stabilizing wheel suspensions to facilitate navigation over uneven terrain. The apparatus includes a frame-stiffening folder assembly and may also include mechanical brakes, an adjustable upper armrest assembly with removable padded forearm supports and two pairs of handles, at least one of which is disposed sufficiently forward to place the user within the polygonal footprint defined by the front and rear wheels to provide support without leaning, stooping, or risking falls.

Abstract: A collapsible upright wheeled walker with adjustable armrests that support sufficient user upper-body weight to facilitate a natural upright gait and provide unassisted mobility for a wide range of mobility-impaired individuals. The apparatus may be easily and quickly folded (and unfolded) and may include bilateral stabilizing wheel suspensions to facilitate navigation over uneven terrain. The apparatus includes a frame-stiffening folder assembly and may also include mechanical brakes, an adjustable upper armrest assembly with removable padded forearm supports and two pairs of handles, at least one of which is disposed sufficiently forward to place the user within the polygonal footprint defined by the front and rear wheels to provide support without leaning, stooping, or risking falls.

Abstract: An adjustable wheel suspension assembly for a wheeled walker providing both lateral and longitudinal stability under load. With a calibrated spring preload adjustment, the wheel suspension assembly provides lateral stability for any particular user body weight and a wheel deflection working stroke sufficient to absorb wheel shocks over irregular terrain. The wheel suspension assembly is particularly advantageous for upright wheeled walkers.

Abstract: A collapsible upright wheeled walker with adjustable armrests that support sufficient user upper-body weight to facilitate a natural upright gait and provide unassisted mobility for a wide range of mobility-impaired individuals. The apparatus may be easily and quickly folded (and unfolded) and may include bilateral stabilizing wheel suspensions to facilitate navigation over uneven terrain. The apparatus includes a frame-stiffening folder assembly and may also include mechanical brakes, an adjustable upper armrest assembly with removable padded forearm supports and two pairs of handles, at least one of which is disposed sufficiently forward to place the user within the polygonal footprint defined by the front and rear wheels to provide support without leaning, stooping, or risking falls.

Abstract: A collapsible upright wheeled walker with adjustable armrests that support sufficient user upper-body weight to facilitate a natural upright gait and provide unassisted mobility for a wide range of mobility-impaired individuals. The apparatus may be easily and quickly folded (and unfolded) and may include bilateral stabilizing wheel suspensions to facilitate navigation over uneven terrain. The apparatus includes a frame-stiffening folder assembly and may also include mechanical brakes, an adjustable upper armrest assembly with removable padded forearm supports and two pairs of handles, at least one of which is disposed sufficiently forward to place the user within the polygonal footprint defined by the front and rear wheels to provide support without leaning, stooping, or risking falls.

Abstract: A case for housing and protecting an electronic device against moisture damage and contaminants is disclosed. The case includes a first member having a first plainer section and a first perimetric wall formed thereon, and a second member having a second planer section and a second perimetric wall formed thereon. The first perimetric wall and the second perimetric wall are engaged forming an overlap and a sealing structure for a watertight seal. The sealing structure includes a mated ring and a ridge-to-groove interlock. The case further includes a plurality interface feature accesses, including an optical access, an audio access, a button, and at least one open access for electrical connection. The case provides a cover with a plug adapted to cover up the open electrical connection access to form a watertight seal.

Abstract: A case for housing and protecting an electronic device against moisture damage and contaminants is disclosed. The case includes a first member having a first plainer section and a first perimetric wall formed thereon, and a second member having a second planer section and a second perimetric wall formed thereon. The first perimetric wall and the second perimetric wall are engaged forming an overlap and a sealing structure for a watertight seal. The sealing structure includes a mated ring and a ridge-to-groove interlock. The case further includes a plurality interface feature accesses, including an optical access, an audio access, a button, and at least one open access for electrical connection. The case provides a cover with a plug adapted to cover up the open electrical connection access to form a watertight seal.

Abstract: A case for housing and protecting an electronic device against moisture damage and contaminants is disclosed. The case comprises a first member having a first plainer section and a first perimetric wall formed thereon, and a second member having a second planer section and a second perimetric wall formed thereon. The first perimetric wall and the second perimetric wall are engaged forming an overlap and a sealing structure for a watertight seal. The sealing structure includes a mated ring and a ridge-to-groove interlock. The case further comprises a plurality interface feature accesses, including an optical access, an audio access, a button, and at least one open access for electrical connection. The case provides a cover with a plug adapted to cover up the open electrical connection access to form a watertight seal.

Abstract: A case for housing and protecting an electronic device against moisture damage and contaminants is disclosed. The case comprises a first member having a first plainer section and a first perimetric wall formed thereon, and a second member having a second planer section and a second perimetric wall formed thereon. The first perimetric wall and the second perimetric wall are engaged forming an overlap and a sealing structure for a watertight seal. The sealing structure includes a mated ring and a ridge-to-groove interlock. The case further comprises a plurality interface feature accesses, including an optical access, an audio access, a button, and at least one open access for electrical connection. The case provides a cover with a plug adapted to cover up the open electrical connection access to form a watertight seal.

Abstract: An ink jet printer having an expandable ink container biased to expand and configured to receive refill ink and an ink reservoir to provide refill ink to the expandable ink container. The printer also has an electronic volume detector to detect a refill value and a full value of the volume of the expandable ink container. The flow of refill ink begins when the volume of the expandable ink container decreases to the refill value and ceases when the volume of the expandable ink container increases to the full value.

Abstract: A sensing system is described for detecting the presence of ink at a predetermined level in an ink reservoir for an ink jet printer. The reservoir includes a perimetric wall having first and second wall sections, wherein at least a portion of said first wall section and a portion of the second wall section are substantially transmissive to light. A light emitter is located proximate to the first wall section and positioned at the predetermined level. A photo detector is positioned at the predetermined level and located proximate to the second wall section for detecting the light emitted from the light emitter, the light emitter being oriented to direct light at the photodetector. The light from the light emitter follows a first path when ink is present in the reservoir at the predetermined level and follows a second path when ink is not present in the reservoir at the predetermined level, the photodetector receiving the light from the light emitter traveling only one of the first path or the second path.

Abstract: An ink delivery system delivers ink from a stationary ink supply to a print cartridge on a movable carriage. The system comprises an ink container, a reservoir, and a flexible tubing connecting the reservoir to the print cartridge. The ink container has an internal cavity not open to atmosphere holding a supply of ink, and an air inlet channel and an ink exit channel. The ink reservoir has fluid channels to mate with the air inlet channel and ink exit channel on the ink container, and an air opening on the upper portion to connect the internal space of the reservoir to atmosphere and an ink exit port. The ink level in the ink reservoir is controlled by allowing the ink to rise to a level where the ink blocks the air channel into the ink container thereby preventing air to flow there through.

Abstract: An ink delivery system in an inkjet printer includes a printhead mounted on a carriage in the inkjet printer. The printhead has nozzles to eject ink droplets for image printing. The system includes an ink reservoir for delivering ink to the printhead. The ink reservoir is positioned so that the ink level is from 0 to 8 inches below the printhead. A pulsation dampener is connected between the ink reservoir and the printhead. The pulsation dampener includes two chambers within a body, wherein a weir separates the chambers. A resilient member is located in one of the chambers and a membrane covers the chambers and the resilient member. The resilient member provides a recovering force against the membrane. Embodied herein is a method of delivering ink to a printhead mounted on a movable carriage using the embodied ink delivery system.

Abstract: An ink jet printer apparatus is adapted to secure a print cartridge which includes an open container having a top opening; a porous ink-absorbent in the container; a print head in ink communication with the porous ink-absorbent; a top cover lid adapted to be placed on the container, over the top opening, to close the container; and an ink conduit needle mounted on the top cover lid to longitudinally extend in a horizontal orientation above the porous ink-absorbent when the cover lid is placed on the container, so that a print ink can descend freely by the force of gravity from the ink conduit needle onto the porous ink-absorbent and from the porous ink-absorbent down to the print head.

Abstract: An ink jet printer having an expandable ink container biased to expand and configured to receive refill ink and an ink reservoir to provide refill ink to the expandable ink container. The printer also has an electronic volume detector to detect a refill value and a full value of the volume of the expandable ink container. The flow of refill ink begins when the volume of the expandable ink container decreases to the refill value and ceases when the volume of the expandable ink container increases to the full value.

Abstract: An ink delivery system in an inkjet printer includes a printhead mounted on a carriage in the inkjet printer. The printhead has nozzles to eject ink droplets for image printing. The system includes an ink reservoir for delivering ink to the printhead. The ink reservoir is positioned so that the ink level is from 0 to 8 inches below the printhead. A pulsation dampener is connected between the ink reservoir and the printhead. The pulsation dampener includes two chambers within a body, wherein a weir separates the chambers. A resilient member is located in one of the chambers and a membrane covers the chambers and the resilient member. The resilient member provides a recovering force against the membrane. Embodied herein is a method of delivering ink to a printhead mounted on a movable carriage using the embodied ink delivery system.

Abstract: An ink delivery system delivering ink with satisfactory ink flow rate and dynamic back pressure from a stationary ink supply station to a print cartridge on a movable carriage in an inkjet printer is disclosed. The ink delivery system comprises an ink container and an ink reservoir both residing in the ink supply station, and a flexible tubing connecting the ink reservoir to the print cartridge. The ink container has an internal cavity not open to atmosphere holding a supply of ink, and an air inlet channel and an ink exit channel. The ink reservoir has fluid channels to mate with the air inlet channel and ink exit channel on the ink container, and an air opening on the upper portion to connect the internal space of the reservoir to atmosphere and an ink exit port. The ink level in the ink reservoir is controlled by allowing the ink to rise to a level where the ink blocks the air channel into the ink container thereby preventing air to flow therethrough.