Watch with solar cell unit

• US 3,890,776 A
• Filed: 03/26/1974
• Issued: 06/24/1975
• Est. Priority Date: 03/27/1973
• Status: Expired due to Term

• Current Assignee: Yoshihisa Urushida
• Original Assignee: Yoshihisa Urushida
• Inventors: Urushida, Yoshihisa
• Primary Examiner(s): Jackmon, Edith Simmons
• Application Number:
  US05/454,988
• Time in Patent Office: 455 Days
• Field of Search: 58/23BA,23C,127R
• US Class Current: 368/205
• CPC Class Codes: G04C 10/02 the power supply being a radioactive or photovoltaic source
• CPC Class Codes: G04C 3/008 Mounting, assembling of components
• CPC Class Codes: Y10S 136/291 Applications

Abstract

A plurality of pie-shaped solar elements which comprise the face of the watch are positioned and secured by a holder in the form a wagon wheel having two concentric rings joined by a plurality of spokes. The underside of each spoke has a downwardly projecting ridge which extends between adjacent solar elements to separate and locate the elements while providing a cover to hide the edges of each element.

Claims

1. In an electronic watch of the type having a solar cell unit comprised of a plurality of separate spaced apart solar cell elements positioned in place of a conventional time display dial, the improvement comprising the provision of a protecting and positioning means for covering the edges of each cell element and separating said elements from each other, said protecting and positioning means comprising an inner ring portion, a plurality of radially extending arms spanning the space between adjacent cell elements and partially overlying the outer surfaces of said cell elements adjacent the edges thereof, an outer peripheral member connecting the outer ends of said arms and partially overlying the outer surfaces of said cell elements along the outer periphery thereof and a dependent rib on the under surface of each of said arms extending in between said cell elements.

2. In an electronic watch as set forth in claim 1 further comprising an imitation cell element having a shape similar to said solar cell elements disposed between two solar cell elements and having an aperture therein for viewing a standard calander display.

3. In an electronic watch as set forth in claim 1 wherein said protecting and positioning means is formed with a covering portion extending between and integrally connected with adjacent arms and having an aperture therein for viewing a standard calander display.

4. In an electronic watch as set forth in claim 1 wherein each of said solar cell elements has a sector-shaped configuration and said outer peripheral member is ring-shaped.

5. In an electronic watch as set forth in claim 1 wherein each of said solar cell elements has a rectangular configuration and said outer peripheral member has a rectangular configuration.