COMBINATION LOCK

• US 3,800,571 A
• Filed: 02/16/1973
• Issued: 04/02/1974
• Est. Priority Date: 02/16/1973
• Status: Expired due to Term

• Current Assignee: Presto Lock Company
• Original Assignee: Henry Heine
• Inventors: Heine, Henry
• Primary Examiner(s): Craig, Jr., Albert G.
• Application Number:
  US05/333,124
• Time in Patent Office: 410 Days
• Field of Search: 70/67,70,71,312,316
• US Class Current: 70/71
• CPC Class Codes: E05B 37/02 with tumbler discs or rings arranged on a single axis, each disc being adjustable independently of the others
• CPC Class Codes: Y10T 70/5066 Bolt type
• CPC Class Codes: Y10T 70/7305 Manually operable
• CPC Class Codes: Y10T 70/7328 Compound tumblers

Abstract

A combination lock which employs a plurality of dials and respective sleeve means for each dial has a pivotally mounted bolt member related to the sleeve means for interlocking engagement with a latch member. The latch member, which is formed to engage a hasp, is spaced longitudinally from the dials and is mounted for movement in a single plane.

Claims

1. A combination lock comprising a face plate member having a plurality of aligned spaced slotS, a shaft, dials positioned to extend partially through the slots, sleeve means for each dial on the shaft, each sleeve means having a flange portion and a flat portion, a slotted bolt member having the dials extended therethrough adjacent the sleeve means, means pivotally mounting the bolt member along a first side thereof on an axis extending parallel to the longitudinal axis of the shaft, resilient means urging the bolt member against the sleeve means, a latch member spaced longitudinally from the dials and fixed for movement in a single plane said movement being parallel to the longitudinal axis of the shaft, the latch member and bolt member having interlocking means operative to lock the latch member in latched position when the bolt member is rotated about its pivotal mounting by a flange on a sleeve means.

2. A combination lock according to claim 1 wherein the interlocking means comprises a projection provided by the bolt member on a side opposite said first side for entry into a notch provided in the latch member.

3. A combination lock according to claim 1 wherein the single plane for movement of the latch member is below and closely adjacent the bolt member when the bolt member is in engagement with the flat portion of each sleeve means, the latch member preventing pivoting of the bolt member when the latch member is in unlatched position.

4. A combination lock according to claim 1 including a frame member beneath the shaft, dials, sleeve means and bolt member connected to the face plate member, the means pivotally mounting the bolt member comprising a trunnion extending outwardly from each end of the bolt member, the trunnions being positioned between spaced bearings provided by the face plate and frame members.

5. A combination lock according to claim 1 wherein the sleeve means are separate sleeves, the dials and sleeves each being provided with cooperable means for keying a sleeve to a respective dial, a spring for normally keying the sleeves to their respective dials, and means for disengaging the sleeves from the dials to permit changing the combination.

6. A combination lock according to claim 2 wherein the single plane for movement of the latch member is below and closely adjacent the bolt member when the bolt member is in engagement with the flat portion of each sleeve means, the latch member preventing pivoting of the bolt member when the latch member is in unlatched position.

7. A combination lock according to claim 2 including a frame member beneath the shaft, dials, sleeve means and bolt member connected to the face plate member, the means pivotally mounting the bolt member comprising a trunnion extending outwardly from each end of the bolt member, the trunnions being positioned between spaced bearings provided by the face plate and frame members.

8. A combination lock according to claim 3 including a frame member beneath the shaft, dials, sleeve means and bolt member connected to the face plate member, the means pivotally mounting the bolt member comprising a trunnion extending outwardly from each end of the bolt member, the trunnions being positioned between spaced bearings provided by the face plate and frame members.

9. A combination lock according to claim 3 wherein the sleeve means are separate sleeves, the dials and sleeves each being provided with cooperable means for keying a sleeve to a respective dial, a spring for normally keying the sleeves to their respective dials, and means for disengaging the sleeves from the dials to permit changing the combination.