IP Library Granted Patent US 9,966,211
Granted Patent B1
US 9,966,211 · App. 15/162,479 · Granted May 8, 2018

Pressure switch system

Inventor: John Chick Hong Tang (Monterey Park, CA)
Assignee: HYDRA-ELECTRIC COMPANY
H01H35/2692H01H5/18H01H2203/004H01H2223/002H01H2235/01
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Quick Facts
Patent No.
US 9,966,211
App. No.
15/162,479
Granted
May 8, 2018
Kind
B1
Abstract

A pressure switch including: a spring blade; a ram pin having an angled bottom surface and laterally restrained in movement, where upward movement of the ram pin engages the spring blade such that the spring blade snap deflects to an engaged position, and where downward movement of the ram pin engages the spring blade such that the spring blade snap deflects to an unengaged position; a ball bearing in contact with the angled bottom surface of the ram pin; and an adjustment screw laterally restraining the ball bearing in movement, where a lateral inward movement of the adjustment screw relative to an outside surface of the pressure switch causes an upward movement of the ram pin, and where a lateral outward movement of the adjustment screw relative to the outside surface of the pressure switch causes a downward movement of the ram pin.

Claims (35)

1. A pressure switch comprising:

a spring blade;

a ram pin having an angled bottom surface and laterally restrained in movement, wherein upward movement of the ram pin engages the spring blade such that a spring blade snap deflects to an engaged position, and wherein downward movement of the ram pin engages the spring blade such that the spring blade snap deflects to an unengaged position;

a ball bearing in contact with the angled bottom surface of the ram pin;

an adjustment screw laterally restraining the ball bearing in movement, wherein a lateral inward movement of the adjustment screw relative to an outside surface of the pressure switch causes an upward movement of the ram pin, and wherein a lateral outward movement of the adjustment screw relative to the outside surface of the pressure switch causes a downward movement of the ram pin; and

an amplifier disposed between a top portion of the ram pin and a bottom surface of the spring blade, wherein upward movement of the ram pin is amplified by the amplifier to the spring blade, and wherein downward movement of the ram pin is amplified by the amplifier to the spring blade.

2. The pressure switch of claim 1 the lateral inward movement of the adjustment screw relative to the outside surface of the pressure switch causes a corresponding lateral inward movement of the ball bearing, and wherein a lateral outward movement of the adjustment screw relative to the outside surface of the pressure switch causes a corresponding lateral outward movement of the ball bearing.

3. The pressure switch of claim 1 wherein the adjustment screw further comprises a flat inner surface in contact with the ball bearing and laterally restraining the ball bearing in movement.

4. The pressure switch of claim 1 wherein the ball bearing moves upwards in response to increased pressure via a pressure plate, and wherein the ball bearing moves downwards in response to decreased pressure via the pressure plate.

5. The pressure switch of claim 1 wherein the spring blade is beryllium nickel.

6. The pressure switch of claim 1 wherein the spring blade establishes an electrical connection with a stud in the engaged position, and wherein the spring blade breaks the electrical connection with the stud in the unengaged position.

7. The pressure switch of claim 1 wherein the spring blade is a “W” blade.

8. The pressure switch of claim 7 further comprising:

a rivet disposed on the spring blade, wherein the rivet is disposed in the center of the spring blade.

9. The pressure switch of claim 7 wherein the rivet establishes an electrical connection with a stud in the engaged position.

10. The pressure switch of claim 9 wherein the rivet breaks the electrical connection with the stud in the unengaged position.

11. The pressure switch of claim 1 wherein the rivet is a gold plated contact.

12. The pressure switch of claim 11 wherein the spring blade is beryllium nickel.

13. A pressure switch comprising:

a spring blade;

a ram pin having an angled bottom surface and laterally restrained in movement, wherein upward movement of the ram pin engages the spring blade such that a spring blade snap deflects to an engaged position, and wherein downward movement of the ram pin engages the spring blade such that the spring blade snap deflects to an unengaged position;

an adjustment screw, wherein a lateral inward movement of the adjustment screw relative to an outside surface of the pressure switch causes an upward movement of the ram pin, and wherein a lateral outward movement of the adjustment screw relative to the outside surface of the pressure switch causes a downward movement of the ram pin.

14. The pressure switch of claim 13 further comprising:

a ball bearing in contact with the angled bottom surface of the ram pin, wherein the adjustment screw laterally restrains the ball bearing in movement.

15. The pressure switch of claim 13 wherein the spring blade is a “W” blade.

16. The pressure switch of claim 13 further comprising:

an amplifier disposed between a top portion of the ram pin and a bottom surface of the spring blade, wherein upward movement of the ram pin is amplified by the amplifier to the spring blade, and wherein downward movement of the ram pin is amplified by the amplifier to the spring blade.

17. A pressure switch comprising:

a spring blade;

a ram pin having an angled bottom surface and laterally restrained in movement, wherein upward movement of the ram pin engages the spring blade such that a spring blade snap deflects to an engaged position, and wherein downward movement of the ram pin engages the spring blade such that the spring blade snap deflects to an unengaged position;

a ball bearing in contact with the angled bottom surface of the ram pin; and

an adjustment screw laterally restraining the ball bearing in movement, wherein a lateral inward movement of the adjustment screw relative to an outside surface of the pressure switch causes an upward movement of the ram pin, and wherein a lateral outward movement of the adjustment screw relative to the outside surface of the pressure switch causes a downward movement of the ram pin.

18. The pressure switch of claim 17 wherein the spring blade is a “W” blade.

19. The pressure switch of claim 17 further comprising:

an amplifier disposed between a top portion of the ram pin and a bottom surface of the spring blade, wherein upward movement of the ram pin is amplified by the amplifier to the spring blade, and wherein downward movement of the ram pin is amplified by the amplifier to the spring blade.

Assignments (2)
SECURITY INTEREST Recorded Jun 28, 2019
From: HYDRA-ELECTRIC COMPANY
To: FIRST EAGLE PRIVATE CREDIT, LLC
Reel/Frame 049625/0085 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 23, 2016
From: TANG, JOHN CHICK HONG
To: HYDRA-ELECTRIC COMPANY
Reel/Frame 038690/0085 →
Continuity (2)
Provisional Application 62165099 · May 21, 2015
Provisional Application 62170549 · Jun 3, 2015