Battery mounting chamber for a pocket calculator

• US 4,269,908 A
• Filed: 10/26/1979
• Issued: 05/26/1981
• Est. Priority Date: 10/26/1978
• Status: Expired due to Term

• Current Assignee: Braun Aktiengesellschaft
• Original Assignee: Braun Aktiengesellschaft
• Inventors: Stemme, Walter
• Primary Examiner(s): LeFevour, Charles F.
• Application Number:
  US06/088,668
• Time in Patent Office: 578 Days
• Field of Search: 429/98, 429/99, 429/100, 429/96, 429/97, 58/23 BA, 206/333
• US Class Current: 429/98
• CPC Class Codes: H01M 50/216 adapted for button or coin cells
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A support body 6 having recessed trays 3, 4 for accommodating button batteries 28 is outwardly rotatable from a pocket calculator housing 8 through the sliding of a T-sectioned curved extension 7 of the body around a cylindrical pivot face 9 integral with the housing. The free end of the extension has a transverse crossbar 11 that abuts inwardly extending stop ribs 12 on the housing to limit the rotation of the body 6 and to prevent it from becoming completely detached from the housing.

Claims

1. A battery mounting chamber for a pocket calculator characterized by:

(a) a pair of battery insert trays (3,

     4) attached to a side surface (5) of an otherwise parallel surfaced support body (6),

(b) a hook-shaped extension (7) on one end of the support body which at least partially fits around a cylindrical pivot face (9) formed on a housing (8), and

(c) the support body extension having a T-shaped cross-section and the free end of the extension having a transverse crossbar (11) engagable with at least one stop tab (12) running crosswise to the support body and integral with the housing, whereby the support body may be rotated out of the housing about the pivot face to expose the trays for battery insertion or removal.

2. A battery mounting chamber as defined in claim 1, wherein the trays define recessed pockets having a depth (t), equal to the thickness of the batteries, and each tray has a bottom opening (14) through which spring strips (15, 16) extend to electrically contact the batteries.

3. A battery mounting chamber as defined in claims 1 or 2, wherein the support body has a closure molding (17) on its narrow end opposite the extension (7).