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:
Oct. 20, 2009
Filed:
May. 18, 2007
Alessandra Furetta, Grenchen, CH;
Alessandra Furetta, Grenchen, CH;
Montres Rado S.A., Lengnau, CH;
Abstract
A display device for a portable instrument includes at least a first transparent or semi-transparent plate arranged on a bottom element. Several closed cavities are formed at least in part in the first plate in the field of view of the device to display information. Each cavity is connected by a respective channel through the bottom element to a tank of colored fluid via feed means for filling or emptying each closed cavity of colored fluid for displaying information. The feed means include at least one micropump connected by an inlet pipe to the colored fluid tank, and microvalves connected to the micropump by a common outlet pipe. Each cavity is directly connected via its respective channel to a corresponding microvalve. The micropump and the microvalves are controlled by electric signals from control means, which can be clocked by a time base in order to control display of time information.