Sensing device

• US 3,288,385 A
• Filed: 03/18/1964
• Issued: 11/29/1966
• Est. Priority Date: 03/18/1964
• Status: Expired due to Term

• Current Assignee: Charles E. Mendenhall, Markakis, Michael J.
• Original Assignee: Charles E. Mendenhall, Markakis, Michael J.
• Inventors: Markakis, Michael J., Mendenhall, Charles E.
• Application Number:
  US04/352,732
• Time in Patent Office: 986 Days
• US Class Current: 242/333.2
• CPC Class Codes: G11B 15/08 by photoelectric sensing G11B15/07 takes precedence
• CPC Class Codes: G11B 15/16 by sensing presence, absence or position of record carrier or container
• CPC Class Codes: G11B 23/087 using two different reels or cores

Claims

1. APPARATUS FOR A TAPE SYSTEM FOR SENSING WHEN THE END OF A RECORDING TAPE HAS BEEN REACHED AND THEN PRODUCING A PREDETERMINED EFFECT UPON THE OPERATION OF THE SYSTEM, THE TAPE BEING RELATIVELY NONLIGHT-TRANSMITTING BUT HAVING A LIGHT-TRANSMITTING PORTION AT THE END THEREOF, SAID APPARATUS COMPRISING:

(A) A FRAME, (B) A TAPE REEL ROTATABLY SUPPORTED ON SAID FRAME, SAID REEL HAVING A HOLLOW TUBULAR HUB THAT INCLUDES LIGHTTRANSMITTING MEANS AND IS ADAPTED TO HAVE THE RECORDING TAPE WOUND AROUND IT WITH THE LIGHT-TRANSMITTING PORTION CLOSET TO SAID HUB, (C) A LIGHT-PRODUCING ELEMENT ON SAID FRAME, (D) A LIGHT-RESPONSIVE ELEMENT ON SAID FRAME, ONE OF SAID ELEMENTS BEING DISPOSED WITHIN SAID HUB, THE OTHER OF SAID ELEMENTS BEING DISPOSED OUTSIDE OF SAID HUB, (E) MEANS OPERATED BY THE ACTUATION OF SAID LIGHT-SENSITIVE ELEMENT TO AFFECT THE OPERATION OF THE TAPE SYSTEM, WHEREBY SAID LIGHT-RESPONSIVE ELEMENT WILL BE ACTUATED WHEN THE TAPE WOUND ON SAID REEL HAS SUFFICIENTLY UNWOUND SO THAT ONLY THE LIGHT-TRANSMITTING END PORTION EXTENDS BETWEEN SAID LIGHT-PRODUCING ELEMENT AND SAID LIGHTRESPONSIVE ELEMENT.