Protostar, Inc., a Delaware Corporation

Eastman-kodak Company

Protostar, Inc.

Encad, Inc.

Peter James Fellingham

Yichuan Pan

David Allen Purcell

David A Neese

Nebojsa Sataric

Craig Timothy Shugert

Zelin Zhang

David Michael Petersen

Shawn J Mercy

Timothy T Grady

Mark M Broschart

Andrew H Bushnell

Dennis J Astroth

Bernard John Eastlund

Donald Emmett Spann

Paul Eberhardt

David M Corner

Brian Horton

Haibin Wu

Scott Allen Rieger

The disclosure demonstrates a collapsible wheeled walker having two side frames supported above a walking surface with attached wheel assemblies. The side frames are interconnected by an X-folder apparatus. The X-folder apparatus has first and second elongate elements rotatably coupled to each other with the bottom ends of the elements rotatably attached to the bottoms of the side frames, and the top ends of the elements having perpendicular support elements that in the deployed open position, engage support brackets formed on the inner sides of the side frames. The support brackets have protrusions extending from bracket support surfaces to engage complementary apertures formed in the perpendicular support elements to provide stability to the wheeled walker.

Collapsible wheeled walker with stability enhancing bracket apparatus and method

A rollator including a frame having first and second side frames extending along respective ones of a pair of planes. First and second upper body supports are coupled to and disposable at an adjustable height above the frame. A pair of forearm gutters are coupled to respective ones of the first and second upper body supports for engaging and supporting a respective forearm of the user during use. Each forearm gutter includes a peripheral edge, a forward midpoint on the peripheral edge, and a rearward midpoint on the peripheral edge. Each forearm gutter defines a longitudinal axis bisecting the respective forearm gutter and passing through the forward midpoint and the rearward midpoint. The forward midpoint and the rearward midpoint on each forearm gutter fall between the pair of planes.

Wheeled walker

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.

Collapsible upright wheeled walker apparatus

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.

Wheeled walker wheel direction lock apparatus and method

A collapsible wheeled walker with two side frames and two height adjustable upper body supports. The apparatus includes a seat that is slidably attached to the two side frames and is movable between a front position to facilitate an ample walking space inside the frames and a rear position for a user to sit. The apparatus may include an X-folder that facilitates collapsing the walker to a small footprint for storage and transportation. It may also include a left forearm gutter and a right forearm gutter as part of the upper body supports that give the user an upright walking posture for health benefits.

Wheeled walker with a moveable seat

Wheeled walker with a movable seat

A method of measuring a relative offset between a first array of marking elements and a second array of marking elements in a printer; a registration target; and a printer are provided. The method includes printing a target by printing a first group of pixels using a plurality of marking elements from the first array and printing a second group of pixels using a plurality of marking elements from the second array; scanning the target to measure an optical characteristic of the target as a function of position along the target; and identifying a position at which an extreme in the optical characteristic of the target occurs.

Marking element registration

A method of calibrating a media advance in a printer includes providing a mask to specify a printing configuration of a calibration target; forming a media feed calibration target on the print media by: i. printing the calibration target, ii. advancing the print media, iii. printing the calibration target; iv. advancing the print media by the previous media advance amount plus an offset amount, and v. repeating steps iii. and iv. until the media feed calibration target is complete; measuring the optical reflectance of the media feed calibration target as a function of position along the media feed calibration target; identifying a position along the media feed calibration target corresponding to the location at which a maximum in the optical reflectance occurs; and comparing the location at which a maximum in the optical reflectance occurs to a predetermined location of the media feed calibration target to calibrate media advance.

Media advance calibration

Growing community of inventors

San Diego, CA, United States of America

Peter James Fellingham