The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 8336904 B1

PDF
Full Text
Expired
Date of Patent:
Dec. 25, 2012

Filed:

Sep. 22, 2008
Applicant:

Bart Kylstra, San Francisco, CA (US);

Inventor:

Bart Kylstra, San Francisco, CA (US);

Assignee:

Daedalus Wings, Inc., San Francisco, CA (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B62B 7/06 (2006.01);
U.S. Cl.
CPC ...
Abstract

A modular wheelchair comprises a number of different modules that include a chassis module with frame members substantially centered along a center plane through the chassis, so that the chassis is able to lay flat when the modules are dissembled. The chassis is connected to a drive module by a single plug/receiver mechanical coupling that may include opposite end geometries. When the plug is in a seated position within the receiver, first end geometries of the two components mate mechanically to resist radial movement, while the second end geometries mate mechanically to resist both radial movement and rotation about an axis of the coupling. Additionally, axial movement in one direction is resisted, with the coupling oriented to apply gravitational force to resist axial movement in the opposite direction. The same arrangement may be used for a seat module.


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Kylstra, Bart. (2012). Modular wheelchair with in-line chassis (U.S. Patent No. 8336904). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8336904

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