Solar powered portable calculator

• US 4,017,725 A
• Filed: 01/03/1975
• Issued: 04/12/1977
• Est. Priority Date: 01/03/1975
• Status: Expired due to Term

• Current Assignee: Monroe Systems For Business, Inc. (Carolina Wholesale Office Machine Company, Inc.)
• Original Assignee: Litton Business Systems, Inc. (Baker Hughes Company)
• Inventors: Roen, Stephen A.
• Primary Examiner(s): Morrison, Malcolm A.
• Assistant Examiner(s): Krass, Errol A.
• Application Number:
  US05/538,308
• Time in Patent Office: 830 Days
• Field of Search: 235/152, 136/206, 136/213, 136/89, 320/2, 320/61, 340/172.5, 250/215, 58/23 C
• US Class Current: 361/679.09
• CPC Class Codes: G06F 15/0216 Constructional details or arrangements
• CPC Class Codes: Y10S 136/291 Applications

Abstract

A portable calculator utilizing a solar panel array which can be either slidably moved within the calculator'"'"'s housing or pivotly connected to it and which when exposed to incident light provide power for the calculator.

Claims

1. A portable calculator comprising:

a housing having a keyboard and indicator means thereon;

solar panel means; and

means for allowing movement of said solar panel means, coupled to said housing, from a first position within said housing to a second position exposing said solar panel means, comprising a rail-channel guide means for slidably moving said solar panel means.

2. A portable calculator according to claim 1 wherein said means for allowing movement of said solar panel means exposes said panel means to incident light in substantially the same orientation as said keyboard is exposed to incident light.

3. A portable calculator comprising:

a housing having a keyboard and indicator means thereon;

solar panel means; and

means for allowing movement of said solar panel means, coupled to said housing, from a first position within said housing to a second position exposing said solar panel means, comprising pivoting means connected at one end to one edge of said housing and at the other end to said solar panel means.

4. A portable calculator according to claim 3, wherein said solar panel means are pivotably connected to each other whereby they are horizontally oriented with respect said housing when in said second position.

5. A portable calculator according to claim 3 wherein said means for allowing movement of said solar panel means exposes said panel means in substantially the same orientation as said keyboard is exposed to incident light.

6. A portable calculator comprising:

a housing having a keyboard and indicator means thereon;

solar panel means;

means for allowing movement of said solar panel means, coupled to said housing, from a first position within said housing to a second position exposing said solar panel means; and

switching means for connecting said solar panel means to power said portable calculator.

7. A portable calculator according to claim 6, additionally comprising;

connecting means for connecting a battery power supply to operate said calculator and

wherein said switching means is coupled to said connecting means, for trickle charging said power supply.