Light signal for door knob and lock assembly

• US 4,683,741 A
• Filed: 07/14/1986
• Issued: 08/04/1987
• Est. Priority Date: 07/14/1986
• Status: Expired due to Term

• Current Assignee: Roy A. Fields
• Original Assignee: Roy A. Fields
• Inventors: Fields, Roy A.
• Primary Examiner(s): Wolfe, Robert L.
• Application Number:
  US06/885,420
• Time in Patent Office: 386 Days
• Field of Search: 70/431, 70/432, 70/330, 70/434, 70/441, 109/21, 109/31, 109/38, 200/61.64, 340/815.23
• US Class Current: 70/432
• CPC Class Codes: E05B 17/10 Illuminating devices on or for locks or keys; Transparent or translucent lock parts; Indicator lights
• CPC Class Codes: E05B 41/00 Locks with visible indication as to whether the lock is locked or unlocked indicator lights E05B17/10
• CPC Class Codes: Y10T 70/8027 Condition indicators
• CPC Class Codes: Y10T 70/827 Attention-directing

Abstract

A door knob and lock assembly having a pair of knobs, a latching bolt operable by the rotation of the knobs, and a turn button to selectively arrest the movement of the bolt to place the assembly in locked condition. A battery operated electrical circuit including a switch operable by the turn button, and a light emitting diode mounted within the door knobs so as to be operable on locking the door to provide a flashing light visible from the outside of the door.

Claims

1. In a door knob and lock assembly for a bathroom door having one of a pair of knobs on the exterior and one on the interior of said bathroom door and a latching bolt operable by the rotation of the knobs, said one of the knobs on the interior of said bathroom door being provided with a turn button operable to selectively arrest the movement of the bolt to place the assembly in locked condition, the improvement comprising a battery operated electrical circuit for indicating only said locked condition of said assembly, said circuit including switch means operable by the turn button to activate a light emitting diode, said light emitting diode being mounted in conjunction with said one door knob on the exterior of said bathroom door so as to be visible from the exterior of the door.

2. The door knob and lock assembly according to claim 1, wherein said electrical circuit includes a flasher unit for causing said light emitting diode to blink.