Encapsulating protective cover for a switch

Patent metadata

Field	Value
Publication number	US-9761386-B2
Application number	US-201514849133-A
Country	US
Kind code	B2
Filing date	Sep 9, 2015
Priority date	Sep 9, 2015
Publication date	Sep 12, 2017
Grant date	Sep 12, 2017

Abstract

Methods and devices related to preventing accidental operation of a switch are disclosed. An example device includes a main body, and a latch element rotatably connected to the main body and is configured to move relative to the main body between an unlatched position and a latched position. In the latched position, the main body and the latch element encapsulate the switch. Also, in the latched position, the main body and the latch element form a cavity configured to accommodate wiring to the switch. Further, the main body is configured with a cutout to reveal a status of the switch. The switch has Lock Out Tag Out (LOTO) index pin compatibility.

First claim

What is claimed is:

1. A device for preventing accidental operation of a switch, comprising:
a main body having a first end and a second end; and
a latch element rotatably connected to the main body at the first end and is configured to move relative to the main body between an unlatched position and a latched position, wherein:
in the latched position, the main body and the latch element encapsulate the switch between the main body and the latch element in an off position,
in the latched position, the main body and the latch element form a cavity opposite the first end of the main body to accommodate wiring to the switch, and
in the latched position, the main body is configured with a cutout extending along central portions of adjacent parallel surfaces to reveal a status of the switch.

2. The device of claim 1 , wherein the cutout is of a size that precludes entry of an object that could cause accidental operation of the switch.

3. The device of claim 1 , wherein the latch element is configured to move to the unlatched position such that the switch is disposed between the main body and the latch element prior to the latch element moving to the latched position to encapsulate the switch.

4. The device of claim 1 , wherein the main body and the latch element have respective holes that align in the latched position to form an aperture for receiving a pin that locks the latch element in the latched position.

5. The device of claim 1 , wherein the main body and the latch element are made of a fire retardant polymeric material.

6. The device of claim 1 , wherein the latch element is rotatably connected to the main body by way of a pivot bolt, wherein the latch element is configured to pivot about the pivot bolt relative to the main body between the unlatched position and the latched position.

7. The device of claim 6 , further comprising
a spring mounted around the pivot bolt, wherein the spring is configured to exert a biasing force against the latch element to bias the latch element to the latched position.

8. A method for preventing accidental operation of a switch, comprising:
rotating a latch element of an encapsulation device relative to a main body of the encapsulation device to an unlatched position, wherein the latch element is pivotally mounted to the main body at a first end of the main body and is configured to rotate relative to the main body between the unlatched position and a latched position;
positioning the main body and the latch element such that the switch is disposed between the main body and the latch element;
rotating the latch element to the latched position to encapsulate the switch between the main body and the latch element in an off position; and
locking the latch element in the latched position, wherein:
in the latched position, the main body and the latch element form a cavity opposite the first end of the main body to accommodate wiring to the switch, and
in the latched position, the main body is configured with a cutout extending along central portions of adjacent parallel surfaces to reveal a status of the switch.

9. The method of claim 8 , wherein the main body and the latch element have respective holes that align in the latched position to form an aperture, wherein locking the latch element in the latched position comprises:
inserting a pin through the aperture to lock the latch element in the latched position.

10. The method of claim 8 , wherein the cutout is of a size that precludes access to the switch by an object that could cause accidental operation of the switch.

11. The method of claim 8 , wherein the latch element is rotatably connected to the main body by way of a pivot bolt, wherein the latch element is configured to pivot about the pivot bolt relative to the main body between the unlatched position and the latched position.

12. The method of claim 8 , wherein the main body and the latch element are made of a fire retardant polymeric material.

13. A device for preventing accidental operation of a switch, comprising:
an upper element having a first end and a second end; and
a lower element rotatably connected to the upper element at the first end by way of a pivot bolt, wherein:
the lower element is configured to pivot about the pivot bolt relative to the upper element between an open position and a closed position,
in the closed position, the upper element and the lower element encapsulate the switch between the upper element and the lower element in an off position,
in the closed position, the upper element and the lower element form a cavity opposite the first end of the upper element to accommodate wiring to the switch, and
in the closed position, the upper element and the lower element form a cutout to reveal a status of the switch.

14. The device of claim 13 , wherein the cutout is of a size that precludes access to the switch by an object that could cause accidental turning-on of the switch.

15. The device of claim 13 , wherein the lower element is configured to move to the open position such that the switch is disposed between the upper element and the lower element prior to moving to the closed position to encapsulate the switch.

16. The device of claim 13 , further comprising
a spring mounted around the pivot bolt, wherein the spring is configured to exert a biasing force against the lower element to bias the lower element to the closed position.

17. The device of claim 13 , wherein the upper element and the lower element are made of a fire retardant polymeric material.

18. The device of claim 13 , wherein the upper element and the lower element have respective holes that align in the closed position to form an aperture for receiving a pin that locks the lower element in the closed position.

19. The device of claim 18 , wherein the pin is connected to a first end of a cable, and wherein a second end of the cable is affixed to the upper element.

Assignees

• Boeing Co

Inventors

• Terry Joshua Kye
• Marsh Bobby Joe
• Fleming Michael Anthony

Classifications

• H01H2009/0292

  Transparent window or opening, e.g. for allowing visual inspection of contact position or contact condition · CPC title

• H01H23/146

  having a generally tubular or conical elongated shape, e.g. dolly · CPC title

• H01H23/04

  Cases; Covers · CPC title

• H01H9/287 Primary

  wherein the operating part is made inaccessible or more difficult to access by a lid, cover or guard, e.g. lockable covers · CPC title

• H01H11/00

  Apparatus or processes specially adapted for the manufacture of electric switches (processes specially adapted for manufacture of rectilinearly movable switches having a plurality of operating members associated with different sets of contacts, e.g. keyboards, H01H13/88) · CPC title