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:
Apr. 29, 2008
Filed:
Jan. 24, 2004
John Hoffman, Poway, CA (US);
John A. Adams, Escondido, CA (US);
Brian L. Ganz, Carlsbad, CA (US);
David W. Jewell, San Diego, CA (US);
John Andrew Moulds, Encinitas, CA (US);
Janet M. Newman, Encinitas, CA (US);
John Hoffman, Poway, CA (US);
John A. Adams, Escondido, CA (US);
Brian L. Ganz, Carlsbad, CA (US);
David W. Jewell, San Diego, CA (US);
John Andrew Moulds, Encinitas, CA (US);
Janet M. Newman, Encinitas, CA (US);
Other;
Abstract
A liquid dispensing device. The liquid dispensing device has a tray for holding a liquid at a relatively constant level. A syringe is used for drawing fluid from the tray. A liquid container containing a liquid is positioned upside-down in the tray such that the opening of the liquid container defines a vertical position that is slightly below the liquid level in the tray. Atmospheric pressure on the liquid in the tray and a vacuum inside the liquid container prevents liquid from draining from the container until the fluid level in the tray drops to a level approximately equal to the vertical position of the opening. The positioning of the syringe for drawing fluid is simplified by reason of the fact that the level of fluid in the tray is maintained at an approximately constant level despite withdrawal of quantities of fluid from the tray.