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:
Aug. 13, 2002
Filed:
Oct. 27, 2000
Applicant:
Inventor:
Richard D. Allen, Fairbury, NE (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E01D 1/00 ; F16D 1/12 ; E05D 1/106 ;
U.S. Cl.
CPC ...
E01D 1/00 ; F16D 1/12 ; E05D 1/106 ;
Abstract
A wheelchair ramp assembly ( ) is disclosed as including a first ramp section ( ) and a second ramp section ( ) joined by a keyway joint ( ). The keyway joint ( ) connects the two ramp section ( ) surfaces when the ramp is in an extended position. The keyway joint ( ) includes a first ramp section outer rotating member ( ) and a second ramp section outer rotating member ( ) that each rotate about an inner member ( ). The inner member ( ) is configured to limit the rotation of the outer members ( ) with respect to one another, thereby limiting the rotation of the first ramp section ( ) with respect to the second ramp section ( ).