Button cell configuration

• US 4,041,214 A
• Filed: 05/20/1976
• Issued: 08/09/1977
• Est. Priority Date: 05/20/1976
• Status: Expired due to Term

• Current Assignee: Timex Corporation (Tanager Group BV)
• Original Assignee: Timex Corporation (Tanager Group BV)
• Inventors: Salin, Jean Claude
• Primary Examiner(s): Walton, Donald L.
• Application Number:
  US05/688,457
• Time in Patent Office: 446 Days
• Field of Search: 429/98, 429/174, 429/96, 429/97, 429/99, 429/162, 429/164, 58/23 BA
• US Class Current: 429/98
• CPC Class Codes: G04C 10/00 Arrangements of electric power supplies in time pieces circuits G04G19/00; mounting, assembling of components of electromechanical watches G04C3/008, of electronic watches G04G17/00
• CPC Class Codes: H01M 50/216 adapted for button or coin cells
• CPC Class Codes: H01M 6/12 with flat electrodes

Abstract

An improved button cell configuration for wristwatches which can be snapped into the case back. The button cell has an outer can configuration or shape having major and minor circumferential retaining flanges adapted to hold a gasket therebetween. The outer can flanges and gasket are arranged to mate with the case back to provide a snug snap-in and snap-out fit therewith.

Claims

1. An improved energy cell for a watch or hearing aid having a case with an opening for inserting the cell therein, wherein the improvement comprises:

an outer container for said cell having a retaining ledge portion having a first circumference,

flange means having a circumference less than said first circumference and having a concave portion for flexing to exert a pressure against the case when said cell is inserted into the opening in the case for holding said cell in the opening of the case, and

gasket means affixed between said retaining ledge portion and said flange means for forming a seal between the opening in the case and the cell whereby dust and moisture are substantially prevented from entering into the interior of the case.

2. An improved button-type energy cell for a wristwatch having a case with a circular opening for inserting the cell therein, wherein the improvement comprises:

an outer container for said cell having a circular rim with a first circumference,

a circumferential flange means having a circumference less than said first circumference and having a portion shaped for flexing to exert a pressure against the case when said cell is inserted into the opening in the case for holding the cell in said opening of the case and to make electrical contact with the case, and

circumferential gasket means between the rim and the flange and contoured to provide a circumferential seal between the opening and the cell and to also exert pressure against the case for holding the cell in said opening.