Key construction

• US 3,349,589 A
• Filed: 08/02/1965
• Issued: 10/31/1967
• Est. Priority Date: 08/02/1965
• Status: Expired due to Term

• Current Assignee: Alex Fricke
• Original Assignee: Alex Fricke
• Inventors: Fricke, Alex
• Application Number:
  US04/476,278
• Time in Patent Office: 820 Days
• US Class Current: 70/395
• CPC Class Codes: E05B 19/04 Construction of the bow or head of the key; Attaching the bow to the shank
• CPC Class Codes: Y10T 24/45026 for key holder
• CPC Class Codes: Y10T 70/7802 Multi-part structures
• CPC Class Codes: Y10T 70/7876 Bow or head
• CPC Class Codes: Y10T 70/8676 Key holders

Claims

1. A SEPARABLE KEY CONSTRUCTION COMPRISING A KEY BIT HAVING A REAR PORTION FOR APPLYING A TURNING FORCE THERETO, A MANUALLY ENGAGEABLE FLAT HOUSING HAVING INNER WALL PORTIONS AND A SLOT IN THE EDGE FOR RECEIVING SAID REAR PORTION, AND SPRING MEANS IN SAID HOUSING FOR RELEASABLY RETAINING SAID REAR PORTION IN SAID HOUSING, WHEREBY TURNING OF SAID HOUSING WILL CAUSE TURNING OF SAID KEY BIT, PORTIONS OF SAID SPRING MEANS ABUT THE INNER WALL PORTIONS OF SAID HOUSING ON EACH SIDE OF SAID SLOT AND OPPOSSITE PORTIONS OF SAID SPRING MEANS ABUT THE INNER WALL PORTIONS OPPOSITE SAID SLOT WHEREIN SAID SPRING MEANS ARE HELD BETWEEN SAID INNER WALL PORTIONS TO LOCK SAID SPRING MEANS IN SAID HOUSING, SAID SPRING MEANS COMPRISING A FLAT U-SHAPED SPRING MEMBER HAVING SPACED PARALLEL ARMS, SAIS REAR PORTION OF SAID KEY BIT SLIDING INTO SAID HOUSING BETWEEN SAID ARMS, ONE OF SAID SPRING MEANS HAVING A DETNET ON THE INNER EDGE THEREOF ADJACENT ITS FREE END, SAID REAR PORTION OF SAID KEY BIT HAVING RECEIVING MEANS ON AT LEAST ONE SIDE EDGE THEREOF, SAID RECEIVING MEANS ENGAGING WITH SAID DETENT OF SAID SPRING MEANS TO RELEASABLY RETAIN SAID REAR PORTION IN SAID HOUSING.