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. 08, 2003
Filed:
Oct. 12, 2000
Applicant:
Inventor:
Steven Mark Guy Rolfe, Oxon, GB;
Assignee:
Owen Mumford Limited, Oxford, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61M 5/20 ;
U.S. Cl.
CPC ...
A61M 5/20 ;
Abstract
An injection device houses a syringe and contains a drive spring, to urge the syringe forwards to project its needle and then eject the dose, and a return spring, to push the syringe back into the housing and retract the needle. A trigger is operated in one way to release the drive spring and in another way to release the return spring, these operations being mutually exclusive and there being parts for ensuring they are performed in the correct order.