AU2022201677B1 - Blowtorch having continuous-flame mode - Google Patents

Blowtorch having continuous-flame mode Download PDF

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Publication number
AU2022201677B1
AU2022201677B1 AU2022201677A AU2022201677A AU2022201677B1 AU 2022201677 B1 AU2022201677 B1 AU 2022201677B1 AU 2022201677 A AU2022201677 A AU 2022201677A AU 2022201677 A AU2022201677 A AU 2022201677A AU 2022201677 B1 AU2022201677 B1 AU 2022201677B1
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AU
Australia
Prior art keywords
button
lock
lock button
casing
activate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
AU2022201677A
Inventor
Wei Cheng Wu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pro Iroda Industries Inc
Original Assignee
Pro Iroda Industries Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pro Iroda Industries Inc filed Critical Pro Iroda Industries Inc
Priority to AU2022201677A priority Critical patent/AU2022201677B1/en
Publication of AU2022201677B1 publication Critical patent/AU2022201677B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/38—Torches, e.g. for brazing or heating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/14—Operating parts, e.g. push-button
    • H01H13/18—Operating parts, e.g. push-button adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift
    • H01H13/186—Operating parts, e.g. push-button adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift wherein the pushbutton is rectilinearly actuated by a lever pivoting on the housing of the switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/12—Push-buttons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2207/00—Ignition devices associated with burner
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
    • F23Q7/06—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs structurally associated with fluid-fuel burners
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H25/00—Switches with compound movement of handle or other operating part
    • H01H25/002—Switches with compound movement of handle or other operating part having an operating member rectilinearly slidable in different directions
    • H01H2025/004—Switches with compound movement of handle or other operating part having an operating member rectilinearly slidable in different directions the operating member being depressable perpendicular to the other directions

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

A blowtorch (10) includes a casing (20) and a control unit (30). The control unit (30) includes an activate button (31) and a lock button (32). The lock button (32) is switchable between a first lock position and an 5 intermediate position, or between the intermediate position and a second lock position. The activate button (31) is switchable between a standby position and an activation position when the lock button (32) is in the intermediate position. The lock button (32) contacts the activate button (31) and restricts the activate button (31) to hold in the activation position when 10 the activate button (31) is in the activation position and the lock button (32) is in the first lock position or the second lock position.

Description

BLOWTORCH HAVING CONTINUOUS-FLAME MODE BACKGROUND OF THE INVENTION
The present invention relates to a blowtorch and, more particularly,
to a blowtorch with a continuous-flame mode.
U.S. Patent No. 10,731,854 B2 discloses a blowtorch, which
includes a casing, an igniter received within the interior, and a safety control
device for preventing the actuator being operated from an unactuated
position to an actuated position movably coupled to the casing and
connected to the igniter. The safety control device includes an actuator
movably coupled to the casing, a release movably coupled to the actuator, a
first biasing member positioned between the actuator and the release, a
retainer movably coupled to the actuator, and a second biasing member
positioned between the actuator and the retainer.
However, the above blowtorch is mainly suitable for right-handed
users. The lock is arranged on the left side of the casing. The left-handed
user can not switch the lock by the left hand thumb when the casing is held
with the left hand.
In view of the above, a need exists for a blowtorch with improved
ignition efficiency that mitigates and/or obviates the above drawbacks.
BRIEF SUMMARY OF THE INVENTION
According to a first aspect, there is provided a blowtorch comprising
a casing, and a control unit including an activate button and a lock button,
wherein an end of the activate button is disposed in the casing, and another
end of the activate button is exposed out of the casing, wherein the lock
button has a first end, a second end opposite to the first end, and a middle portion between the first and second ends thereof, wherein the first and second ends of the lock button are respectively exposed out of and disposed on two opposite sides of the casing, and wherein the middle portion of the lock button is disposed in the casing, wherein the lock button is further provided with a first pressing portion, a second pressing portion, and an outward flange disposed between the first and second pressing portions, wherein the first pressing portion and the second pressing portion are respectively disposed at the first and second ends the lock button, wherein the lock button is switchable relative to the casing between a first lock position and an intermediate position, and is switchable relative to the casing between the intermediate position and a second lock position, wherein the activate button is switchable between a standby position and an activation position when the lock button is in the intermediate position, wherein the lock button contacts the activate button and restricts the activate button to hold in the activation position when the activate button is in the activation position and the lock button is in the first lock position or the second lock position, wherein the control unit further includes a first elastic member and a second elastic member, wherein the first elastic member is sleeved on the first pressing portion, wherein an end of the first elastic member abuts the outward flange, and another end of the first elastic member abuts an inner periphery of the casing, wherein the first elastic member is configured to push the lock button towards the intermediate position, wherein the second elastic member is sleeved on the second pressing portion, wherein an end of the second elastic member abuts the outward flange, and another end of the second elastic member abuts the inner periphery of the casing, and wherein the second elastic member is configured to push the lock button towards the intermediate position.
DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a blowtorch with blowtorch with a
continuous-flame mode of an embodiment according to the present
invention.
FIGS. 2 and 3 are exploded, perspective views of the blowtorch of
FIG. 1.
FIGS. 4 and 5 are cross-sectioned views of the blowtorch of FIG. 1.
FIG. 6 is a cross-sectioned view of the blowtorch of FIG. 1 and
illustrates a lock button is in a first lock position.
FIG. 7 is a cross-sectioned view of the blowtorch of FIG. 1 and
illustrates a lock button is in a second lock position.
DETAILED DESCRIPTION OF THE INVENTION
With reference to FIGS. 1-7, a blowtorch 10 with a
continuous-flame mode of an embodiment according to the present
invention comprises a casing 20 and a control unit 30. The control unit 30
includes an activate button 31 and a lock button 32. An end of the activate
button 31 is disposed in the casing 20, and another end of the activate
button 31 is exposed out of the casing 20. The lock button 32 has a first end,
a second end opposite to the first end, and a middle portion between the first
and second ends thereof. The first and second ends of the lock button 32 are
respectively exposed out of and disposed on two opposite sides of the
casing 20, and the middle portion of the lock button 32 is disposed in the
casing 20. The lock button 32 is switchable relative to the casing 20
between a first lock position and an intermediate position, or is switchable relative to the casing 20 between the intermediate position and a second lock position. The activate button 31 is switchable between a standby position and an activation position when the lock button 32 is in the intermediate position. The lock button 32 contacts the activate button 31 and restricts the activate button 31 to hold in the activation position when the activate button 31 is in the activation position and the lock button 32 is in the first lock position or the second lock position. Further, an outer periphery of the activate button 31 is provided with an engaging flange 311. An outer periphery of the lock button 32 is provided with a communication channel 321, a first engaging recess 322, and a second engaging recess 323. The first engaging recess 322 and the second engaging recess 323 are interconnected with an edge of the communication channel 321 and are respectively disposed at two opposite sides of the communication channel 321. The engaging flange 311 is movable in the communication channel 321 when the activate button 31 is switchable between the standby position and the activation position. The engaging flange 311 is engaged in the first engaging recess 322 when the activate button 31 is in the activation position and the lock button 32 is in the first lock position. The engaging flange 311 is engaged in the second engaging recess 323 when the activate button 31 is in the activation position and the lock button 32 is in the second lock position. The engaging flange 311 is disposed in the communication channel 321 and restricts the lock button 32 to hold in the intermediate position when the activate button 31 is in the standby position. Furthermore, the engaging flange 311 is extended along a radial direction of a switching path of the activate button 31 relative to the communication channel 321. The communication channel 321, the first engaging recess 322, and the second engaging recess 323 are extended along a radial direction of a switching path of the lock button 32 relative to the casing 20.
The lock button 32 is provided with a first pressing portion 324, a
second pressing portion 325, and an outward flange 326 disposed between
the first and second pressing portions 324 and 325. The first pressing
portion 324 and the second pressing portion 325 are respectively disposed at
the first and second ends the lock button 32. The first and second pressing
portions 324 and 325 each have a width in the radial direction of the
switching path of the lock button 32 being less than a width of the outward
flange 326 in the radial direction of the switching path of the lock button 32.
The communication channel 321, the first engaging recess 322, and the
second engaging recess 323 are arranged in the outward flange 326. The
first engaging recess 322 is disposed on a first side of the communication
channel 321 adjacent to the first pressing portion 324, and the second
engaging recess 323 is disposed on a second side of the communication
channel 321 adjacent to the second pressing portion 325.
The control unit 30 further includes a first elastic member 33 and a
second elastic member 34. The first elastic member 33 is sleeved on the first
pressing portion 324. An end of the first elastic member 33 abuts the
outward flange 326, and another end of the first elastic member 33 abuts an
inner periphery of the casing 20. Thus, the first elastic member 33 is
configured to push the lock button 32 towards the intermediate position.
The second elastic member 34 is sleeved on the second pressing portion 325.
An end of the second elastic member 34 abuts the outward flange 326, and another end of the second elastic member 34 abuts the inner periphery of the casing 20. Thus, the second elastic member 34 is configured to push the lock button 32 towards the intermediate position. An inner periphery of the first engaging recess 322 is formed a first concave depression 327 adjacent to the communication channel 321. An inner periphery of the second engaging recess 323 is formed a second concave depression 328 adjacent to the communication channel 321. The engaging flange 311 abuts the first concave depression 327 when the activate button 31 is in the activation position and the lock button 32 is in the first lock position. The engaging flange 311 abuts the second concave depression 328 when the activate button 31 is in the activation position and the lock button 32 is in the second lock position. The blowtorch 10 can provide a continuous-flame mode without constantly pressing the activate button 31. When the activate button 31 is switched to the activation position, the blowtorch 10 is in an activated state and starts to produce a flame, then the lock button 32 can be switched to the first lock position or the second lock position, so that the blowtorch 10 stays in the activated state to provide a continuous-flame mode, and the user does not need to press the activate button 31 constantly. In addition, the first pressing portion 324 and the second pressing portion 325 are respectively arranged on both sides of the casing 20, so that the blowtorch 10 can be suitable for left-handed or right-handed users. The reference to any prior art in this specification is not, and should not be taken as, an acknowledgement or any form of suggestion that such prior art forms part of the common general knowledge. It will be understood that the terms "comprise" and "include" and any of their derivatives (e.g. comprises, comprising, includes, including) as used in this specification, and the claims that follow, is to be taken to be inclusive of features to which the term refers, and is not meant to exclude the presence of any additional features unless otherwise stated or implied. In some cases, a single embodiment may, for succinctness and/or to assist in understanding the scope of the disclosure, combine multiple features. It is to be understood that in such a case, these multiple features may be provided separately (in separate embodiments), or in any other suitable combination. Alternatively, where separate features are described in separate embodiments, these separate features may be combined into a single embodiment unless otherwise stated or implied. This also applies to the claims which can be recombined in any combination. That is a claim may be amended to include a feature defined in any other claim. Further a phrase referring to "at least one of' a list of items refers to any combination of those items, including single members. As an example, "at least one of: a, b, or C is intended to cover: a, b, c, a-b, a-c, b-c, and a-b-c. It will be appreciated by those skilled in the art that the disclosure is not restricted in its use to the particular application or applications described. Neither is the present disclosure restricted in its preferred embodiment with regard to the particular elements and/or features described or depicted herein. It will be appreciated that the disclosure is not limited to the embodiment or embodiments disclosed, but is capable of numerous rearrangements, modifications and substitutions without departing from the scope as set forth and defined by the following claims.

Claims (6)

1. A blowtorch comprising:
a casing; and a control unit including an activate button and a lock button, wherein an end of the activate button is disposed in the casing, and another end of the activate button is exposed out of the casing, wherein the lock button has a first end, a second end opposite to the first end, and a middle portion between the first and second ends thereof, wherein the first and second ends of the lock button are respectively exposed out of and disposed on two opposite sides of the casing, and wherein the middle portion of the lock button is disposed in the casing, wherein the lock button is further provided with a first pressing portion, a second pressing portion, and an outward flange disposed between the first and second pressing portions, wherein the first pressing portion and the second pressing portion are respectively disposed at the first and second ends the lock button; wherein the lock button is switchable relative to the casing between a first lock position and an intermediate position, and is switchable relative to the casing between the intermediate position and a second lock position; wherein the activate button is switchable between a standby position and an activation position when the lock button is in the intermediate position; wherein the lock button contacts the activate button and restricts the activate button to hold in the activation position when the activate button is in the activation position and the lock button is in the first lock position or the second lock position, wherein the control unit further includes a first elastic member and a second elastic member, wherein the first elastic member is sleeved on the first pressing portion, wherein an end of the first elastic member abuts the outward flange, and another end of the first elastic member abuts an inner periphery of the casing, wherein the first elastic member is configured to push the lock button towards the intermediate position, wherein the second elastic member is sleeved on the second pressing portion, wherein an end of the second elastic member abuts the outward flange, and another end of the second elastic member abuts the inner periphery of the casing, and wherein the second elastic member is configured to push the lock button towards the intermediate position. 2. The blowtorch as claimed in claim 1, wherein an outer periphery of the activate button is provided with an engaging flange, wherein an outer periphery of the lock button is provided with a communication channel, a first engaging recess, and a second engaging recess, wherein the first engaging recess and the second engaging recess are interconnected with an edge of the communication channel and are respectively disposed at two opposite sides of the communication channel; wherein the engaging flange is movable in the communication channel when the activate button is switchable between the standby position and the activation position; wherein the engaging flange is engaged in the first engaging recess when the activate button is in the activation position and the lock button is in the first lock position; wherein the engaging flange is engaged in the second engaging recess when the activate button is in the activation position and the lock button is in the second lock position.
3. The blowtorch as claimed in claim 2, wherein the engaging
flange is disposed in the communication channel and restricts the lock
button to hold in the intermediate position when the activate button is in the
standby position.
4. The blowtorch as claimed in claim 3, wherein the engaging
flange is extended along a radial direction of a switching path of the activate
button relative to the communication channel, and wherein the
communication channel, the first engaging recess, and the second engaging
recess are extended along a radial direction of a switching path of the lock
button relative to the casing.
5. The blowtorch as claimed in claim 4, wherein the first and
second pressing portions each have a width in the radial direction of the
switching path of the lock button being less than a width of the outward
flange in the radial direction of the switching path of the lock button,
wherein the communication channel, the first engaging recess, and the
second engaging recess are arranged in the outward flange, wherein the first
engaging recess is disposed on a first side of the communication channel
adjacent to the first pressing portion, and wherein the second engaging
recess is disposed on a second side of the communication channel adjacent
to the second pressing portion.
6. The blowtorch as claimed in claim 1, wherein an inner
periphery of the first engaging recess is formed a first concave depression
adjacent to the communication channel, wherein an inner periphery of the
second engaging recess is formed a second concave depression adjacent to
the communication channel; wherein the engaging flange abuts the first concave depression when the activate button is in the activation position and the lock button is in the first lock position; wherein the engaging flange abuts the second concave depression when the activate button is in the activation position and the lock button is in the second lock position.
AU2022201677A 2022-03-10 2022-03-10 Blowtorch having continuous-flame mode Active AU2022201677B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2022201677A AU2022201677B1 (en) 2022-03-10 2022-03-10 Blowtorch having continuous-flame mode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU2022201677A AU2022201677B1 (en) 2022-03-10 2022-03-10 Blowtorch having continuous-flame mode

Publications (1)

Publication Number Publication Date
AU2022201677B1 true AU2022201677B1 (en) 2023-07-13

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Family Applications (1)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5667377A (en) * 1995-07-07 1997-09-16 Lin; Arlo H. T. Gas torch
WO2008113546A2 (en) * 2007-03-21 2008-09-25 Marquardt Gmbh Electric switch

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5667377A (en) * 1995-07-07 1997-09-16 Lin; Arlo H. T. Gas torch
WO2008113546A2 (en) * 2007-03-21 2008-09-25 Marquardt Gmbh Electric switch

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