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.:
Date of Patent:
Jul. 27, 2021
Filed:
May. 08, 2018
Huntleigh Technology Limited, Dunstable, GB;
Thomas Anthony Dellaca, San Antonio, TX (US);
Kevin Scott Wilson, San Antonio, TX (US);
Huntleigh Technology Limited, Bedfordshire, GB;
Abstract
A retractable wheel system includes a rotatable member, a swing arm attached to the rotatable member and a wheel, a swing mount attached to the rotatable member, and a spring member. The spring member is attached to the swing mount at a connection point on a first end and to the swing arm on a second end. The spring member is rotatable relative to the swing mount at the connection point. The spring member is configured to apply a force in an upward direction when the connection point is above a line extending between a wheel attachment point and a swing arm rotation point of the swing arm and a force in a downward direction when the connection point is below the line of the swing arm. A transportation unit including the retractable wheel system is also disclosed.