Self extinguishing torch canister

Patent metadata

Field	Value
Publication number	US-10197268-B2
Application number	US-201615065489-A
Country	US
Kind code	B2
Filing date	Mar 9, 2016
Priority date	Mar 9, 2016
Publication date	Feb 5, 2019
Grant date	Feb 5, 2019

Abstract

A self extinguishing torch mechanism has a stationary tube with an opening at an upper end thereof, and a wick tube concentrically rigidly affixed inside the stationary tube defining a space therebetween. A sliding tube is situated coaxially around wick tube the within the space defined between the wick tube and stationary tube. A biasing member extends the sliding member through the opening at the upper end of the stationary tube when the stationary tube is overturned.

First claim

What is claimed is:

1. A self extinguishing torch mechanism comprising:
a stationary tube with an opening at an upper end thereof;
a wick tube concentrically rigidly affixed inside the stationary tube defining a space therebetween;
a sliding tube situated coaxially around wick tube the within the space defined between the wick tube and stationary tube;
a biasing member that extends the sliding member through the opening at the upper end of the stationary tube when the stationary tube is overturned;
a flange on a lower portion of the sliding tube extending away from the sliding tube and interfacing with the biasing member;
a lip circumscribing the opening on the upper end of the stationary tube and defining the opening at a size that allows an upper portion of the sliding tube to extend through the opening but retains the flange within the stationary tube.

2. The self extinguishing torch mechanism of claim 1 , further comprising a cap affixed at an upper end of the stationary tube and retaining the stationary tube at least partially inside a liquid fuel reservoir.

3. The self extinguishing torch mechanism of claim 1 , further comprising a shelf between the stationary tube and the wick tube demarcating a lower end of the space defined between the stationary tube and wick tube.

4. The self extinguishing torch mechanism of claim 1 , wherein the biasing member comprises a coil spring surrounding the wick tube and pressing against the shelf and the flange to provide an upward extending force to the sliding tube when the sliding tube contacts the coil spring.

5. A self extinguishing torch mechanism comprising:
a stationary tube with an opening at an upper end thereof;
a wick tube concentrically rigidly affixed inside the stationary tube defining a space therebetween;
a sliding tube situated coaxially around wick tube the within the space defined between the wick tube and stationary tube; and
a biasing member that extends the sliding member through the opening at the upper end of the stationary tube when the stationary tube is overturned;
wherein the biasing member extends the sliding tube beyond the wick tube by a distance that is at least twice an internal diameter of the wick tube.

6. The self extinguishing torch mechanism of claim 1 , further comprising a remote snuffer cap situated superior to the wick tube such that the sliding tube contacts the remote snuffer cap when extended by the biasing member when the stationary tube is overturned.

7. A self extinguishing torch canister comprising:
a liquid torch fuel reservoir; and
a cap atop the liquid fuel torch reservoir retaining a self extinguishing mechanism at least partially inside the liquid fuel torch reservoir, the self extinguishing mechanism comprising:
a stationary tube affixed to the cap and defining an opening through the cap;
a wick tube retained inside stationary tube providing passage for a wick from outside the liquid torch fuel reservoir to inside the liquid torch fuel reservoir;
a space defined inside the stationary tube and between the stationary tube and the wick tube;
a sliding tube surrounding the wick tube and freely slidable on the wick tube to extend through the opening through the cap; and
a biasing member providing an upward biasing force against the siding tube;
wherein, the sliding tube acts against the biasing member under force of gravity to remain in a first retracted position relative to the stationary tube when the liquid torch fuel reservoir remains upright; and
wherein the sliding tube has a second extended position where the sliding tube is extended through the opening through the cap and beyond the wick tube by a distance at least twice an inside diameter of the wick tube.

8. The self extinguishing torch canister of claim 7 , wherein the cap and the liquid torch fuel reservoir are threaded to allow the cap and the self extinguishing mechanism to be selectively attached and detached from the liquid torch fuel reservoir.

9. The self extinguishing torch canister of claim 7 , wherein the liquid torch fuel reservoir has a maximum fuel fill level that is higher inside the liquid fuel torch reservoir than a lower depth of the self extinguishing mechanism.

10. The self extinguishing torch canister of claim 7 , wherein the sliding tube is forced by the biasing member to extend through the opening through the cap to the second extended position when the liquid torch fuel reservoir departs from upright by greater than a predetermined angle.

11. The self extinguishing torch canister of claim 7 , wherein the sliding tube is forced by the biasing member to extend through the opening through the cap to the second extended position when the liquid torch fuel reservoir departs from upright by greater than a predetermined angle and impacts a ground surface.

12. The self extinguishing torch canister of claim 7 , wherein the biasing member comprises a coil spring wound around the wick tube.

13. The self extinguishing torch canister of claim 12 , further comprising a flange on the sliding tube, the flange at least partially compressing the coil spring when the liquid torch fuel reservoir is in an upright position.

14. The self extinguishing torch canister of claim 13 , further comprising a lip on the stationary tube, the lip being sized to retain the flange and prevent the sliding tube from completely escaping the stationary tube.

15. The self extinguishing torch canister of claim 14 , further comprising a shelf on a lower portion of the wick tube, the shelf connecting the wick tube to the stationary tube and providing a lower bearing surface for the coil spring.

16. The self extinguishing torch canister of claim 7 , further comprising a stationary snuffer affixed to the cap and providing a remote snuffer cap superior to the wick tube such that the sliding tube contacts the remote snuffer cap when the sliding tube is in the second extended position.

Assignees

• Lamplight Farms Inc

Inventors

• Hansen Lars
• Woodruff Robert

Classifications

• F23D3/26 Primary

  Safety devices thereon · CPC title