Ignition switch assembly

Patent metadata

Field	Value
Publication number	US-9765966-B2
Application number	US-201314434774-A
Country	US
Kind code	B2
Filing date	Sep 17, 2013
Priority date	Oct 22, 2012
Publication date	Sep 19, 2017
Grant date	Sep 19, 2017

Abstract

An ignition switch assembly is configured to be operatively connected to a gas valve. The ignition switch assembly may include a first ignition contact and a second ignition contact. The first and second ignition contacts may be sized and shaped the same. A hub may be configured to be rotated within the ignition switch assembly. A rotation of the hub in a first direction causes a portion of the first ignition contact to engage the second ignition contact. Further rotation of the hub in the first direction or rotation of the hub in a second direction that is opposite from the first direction causes the portion of the first ignition contact to disengage from the second ignition contact.

First claim

The invention claimed is:

1. An ignition switch assembly configured to be operatively connected to a gas valve, the ignition switch assembly comprising:
a first ignition contact;
a second ignition contact, wherein the first and second ignition contacts are sized and shaped the same;
a hub configured to be rotated, wherein a rotation of the hub in a first direction causes a portion of the first ignition contact to engage the second ignition contact, and wherein further rotation of the hub in the first direction or rotation of the hub in a second direction that is opposite from the first direction causes the portion of the first ignition contact to disengage from the second ignition contact; and
a base secured to a cover, wherein the base is configured to mount to the gas valve, wherein the base and the cover define an internal chamber, wherein the first and second ignition contacts and the hub are retained within the internal chamber, wherein the cover comprises contact anchors, contact retainers, and tip retainers configured to retain each of the first and second ignition contacts at a plurality of points of contact.

2. The ignition switch assembly of claim 1 , wherein the first and second ignition contacts are angled with respect to one another when the first ignition contact is disengaged from the second ignition contact.

3. The ignition switch assembly of claim 1 , wherein the first ignition contact resides within a first linear plane in an at-rest position, and wherein the second ignition contact resides within a second linear plane in an at-rest position.

4. The ignition switch assembly of claim 1 , wherein each of the first and second ignition contacts comprises an anchoring end integrally connected to a fixed beam and a flexible beam, wherein the anchoring end and the fixed beam are configured to be fixed in position within the ignition switch assembly, and wherein the portion of the first ignition contact comprises the flexible beam.

5. The ignition switch assembly of claim 1 , wherein the first and second ignition contacts are securely retained by the cover.

6. The ignition switch assembly of claim 1 , wherein the cover comprises an upstanding rim surrounding a portion of the hub, wherein the upstanding rim is configured to direct liquid away from the hub.

7. The ignition switch assembly of claim 1 , wherein the base comprises one or both of a hub retainer and a hub rotation alignment member configured to axially secure the hub.

8. The ignition switch assembly of claim 1 , wherein an open drain path is formed between the hub and the base, wherein the open drain path is configured to allow liquid to drain through the ignition switch assembly.

9. The ignition switch assembly of claim 1 , wherein the base comprises one or both of liquid-directing channels or barrier members configured to direct liquid away from the first and second ignition contacts.

10. The ignition switch assembly of claim 1 , wherein the base comprises one or more mounting lugs configured to ensure that the base is properly connected to the cover and/or the gas valve.

11. The ignition switch assembly of claim 1 , wherein the hub comprises a camming protuberance configured to urge the portion of the first ignition contact into the second ignition contact.

12. The ignition switch assembly of claim 1 , wherein the base comprises a hub rotation alignment member including at least one protruding bulge, wherein the hub comprises at least one retaining feature including a reciprocal channel formed between two protuberances, and wherein the at least one protruding bulge nests within the at least one reciprocal channel to prevent undesired rotation of the hub with respect to the base.

13. An ignition switch assembly configured to be operatively connected to a gas valve, the ignition switch assembly comprising:
a first ignition contact;
a second ignition contact, wherein the first and second ignition contacts are linear and angled with respect to one another when the first and second ignition contacts are in at-rest positions;
a hub configured to be rotated, wherein a rotation of the hub in a first direction causes a portion of the first ignition contact to engage the second ignition contact, and wherein further rotation of the hub in the first direction or rotation of the hub in a second direction that is opposite from the first direction causes the portion of the first ignition contact to disengage from the second ignition contact; and
a base secured to a cover, wherein the base is configured to mount to the gas valve, wherein the base and the cover define an internal chamber, wherein the first and second ignition contacts and the hub are retained within the internal chamber, wherein the base comprises a hub rotation alignment member including at least one protruding bulge, wherein the hub comprises at least one retaining feature including a reciprocal channel formed between two protuberances, and wherein the at least one protruding bulge nests within the at least one reciprocal channel to prevent undesired rotation of the hub with respect to the base.

14. The ignition switch assembly of claim 13 , wherein each of the first and second ignition contacts comprises an anchoring end integrally connected to a fixed beam and a flexible beam, wherein the anchoring end and the fixed beam are configured to be fixed in position within the ignition switch assembly, and wherein the portion of the first ignition contact comprises the flexible beam.

15. The ignition switch assembly of claim 13 , wherein the cover comprises an upstanding rim surrounding a portion of the hub, wherein the upstanding rim is configured to direct liquid away from the hub.

16. The ignition switch assembly of claim 13 , wherein an open drain path is formed between the hub and the base, wherein the open drain path is configured to allow liquid to drain through the ignition switch assembly.

17. The ignition switch assembly of claim 13 , wherein the hub comprises a camming protuberance configured to urge the portion of the first ignition contact into the second ignition contact.

18. The ignition switch assembly of claim 13 , wherein the first and second ignition contacts are securely retained by the cover.

19. An ignition switch assembly configured to be operatively connected to a gas valve, the ignition switch assembly comprising:
a base configured to mount to the gas valve, wherein the base comprises a hub rotation alignment member including at least one protruding bulge;
a cover secured to the base, wherein the base and the cover define an internal chamber, wherein the cover comprises an upstanding rim surrounding a hub opening, wherein the upstanding rim is configured to direct liquid away from the hub opening;
a first ignition contact securely retained by the cover within the internal chamber, wherein the first ignition contact resides within a first linear plane in an at-rest position, wherein the first ignition contact comprises a first anchoring end integrally connected to a first fixed beam and a first flexible beam, and wherein the first anchoring end and the first fixed beam are configured to be fixed in position within the ignition switch assembly;
a second ignition contact securely retained by the cover within the internal chamber, wherein the second ignition contact resides within a second linear plane in an at-rest position, wherein the second ignition contact comprises a second anchoring end integrally connected to a second fixed beam and a second flexible beam, wherein the second anchoring end and

Assignees

• Illinois Tool Works

Inventors

• Herzog Richard R
• Hartley Michael W

Classifications

• F23Q3/006 Primary

  Details (sparking-plugs H01T13/00) · CPC title

• F01M11/0004

  Oilsumps · CPC title

• H01H3/42

  using cam or eccentric · CPC title

• H01H19/20

  Driving mechanisms allowing angular displacement of the operating part to be effective in either direction · CPC title

• H01H1/06

  characterised by the shape or structure of the contact-making surface, e.g. grooved · CPC title