US4373657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Devices and method for delivery of solder and brazing material
Assignee: Individual
•
Filing: 1980-06-27
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Granted: 1983-02-15
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Expires: 2000-06-27
Abstract
Abstract A soldering device having a guide body for receiving and delivering a filler metal to form a weldment. The guide body has an end portion which is positioned in the path of the heat from the burner to preheat the filler metal therein. The temperature of the filler metal in the end portion is sensed by a thermocouple and delivered to a memory unit for comparison with a preset temperature for operating a device for feeding the filler metal to the end portion. A cooling area upstream from the end portion having collant circulating therethrough is also controlled from the memory unit. A screen movable between the burner and the end portion to control the flow of heat to the latter is also controlled by the memory unit. The temperature of the burner flame and of the workpiece can also be sensed to assure proper working conditions upon delivery of the filler metal. Additionally, the burner and the feed of a reducing gas can be automatically terminated while changing workpieces.
Inventors
- 👤 Marc Fillon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:56
CPC Classifications
B; B23; B23K; B23K3/00; B23K3/06; B23K3/0607; B23K3/063; B23K37/00; B23K37/003; B23K5/00; B23K5/22; B23K9/00; B23K9/12
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
124 words
A device for feeding filler metal for a welding operation of the type having a burner and a means for feeding gases, comprising: a guide body for delivering the filler metal, said guide body being exposed to the heat from the burner to preheat the filler metal in the guide body to a temperature just below its melting point, the feed of the filler metal being in response to the temperature of the filler metal in the guide body, and the operation of the burner and the feed of gases being responsive to the feed of filler metal, whereby when the feed of the filler metal stops to change the workpiece, the ignition of the burner and the feed of the gases also stops.
Claim 2
Independent Claim
124 words
A device for feeding filler metal for a welding operation of the type having a burner and a means for feeding gases, comprising: a guide body for delivering the filler metal, said guide body being exposed to the heat from the burner to preheat the filler metal in the guide body to a temperature just below its melting point, the feed of the filler metal being in response to the temperature of the filler metal in the guide body, and the operation of the burner and the feed of gases being responsive to the feed of filler metal, whereby when the feed of the filler metal stops to change the workpiece, the ignition of the burner and the feed of the gases also stops.
Claim 3
Dependent Claim
95 words
A soldering device comprising: a guide body for receiving and delivering a filler metal, the end portion of the guide body being constructed to be exposed to the heat from a heat supplying burner to preheat the filler metal to a temperature just below its melting point, heat sensing means for sensing the temperature of the filler metal in said end portion, and feed means for delivering the filler metal to the guide body, said feed means being operative to feed the filler metal in response to the temperature sensed by the heat sensing means.
Claim 4
Dependent Claim
95 words
A soldering device comprising: a guide body for receiving and delivering a filler metal, the end portion of the guide body being constructed to be exposed to the heat from a heat supplying burner to preheat the filler metal to a temperature just below its melting point, heat sensing means for sensing the temperature of the filler metal in said end portion, and feed means for delivering the filler metal to the guide body, said feed means being operative to feed the filler metal in response to the temperature sensed by the heat sensing means.
Claim 5
Dependent Claim
14 words
A soldering device according to claim 2, said heat sensing means being a thermocouple.
Claim 6
Dependent Claim
50 words
A soldering device according to claim 2, said guide body having a coolant portion upstream from said end portion, circulating means for circulating a coolant fluid therethrough to cool the filler metal upstream from said end portion, and the circulating means being operable in response to the heat sensing means.
Claim 7
Dependent Claim
60 words
A soldering device according to claim 2 or claim 4, including a heat screen, means for moving the heat screen between the burner and the said end portion of the guide body, to control the heat delivered to the end portion to preheat the filler metal, said means for moving the heat screen being responsive to said heat sensing means.
Claim 8
Dependent Claim
48 words
A soldering device according to claim 2, including an electronic memory, means for setting in the electronic memory a preset temperature for melting of the filler metal, and means for comparing the temperature sensed by the heat sensing means with the preset temperature for operating the feed means.
Claim 9
Dependent Claim
58 words
A soldering device according to claim 6, said guide body having a coolant portion upstream from said end portion, circulating means for circulating the coolant fluid therethrough to cool the filler metal upstream from said end portion, and the circulating means being operable in response to the heat sensing means and the preset temperature in the electronic memory.
Claim 10
Dependent Claim
54 words
A soldering device according to claim 2, including a burner and a means for delivering a reducing gas to the welding area, the burner and the means for delivering the reducing gas both being operably connected to the feed means to be cut off when the feed means is stopped to change the workpiece.
Claim 11
Dependent Claim
52 words
A soldering device according to claim 2, including a first detector for determining the burner temperature, a second detector for detecting the workpiece temperature, an integrator for receiving signals from the first and second detectors and comparing them to a signal received from the heat sensing means for operating the feed means.
Claim 12
Independent Claim
87 words
A method for feeding filler metal for a welding operation, comprising the steps of: delivering the filler metal through a guide body, preheating the filler metal located at the end portion of the guide body to a temperature just below its melting point by exposing the said end portion of the guide body to heat from a heat supplying burner, sensing the temperature of the filler metal at said end portion, and setting the speed of feed of the filler metal in response to the sensed temperature.
Claim 13
Independent Claim
87 words
A method for feeding filler metal for a welding operation, comprising the steps of: delivering the filler metal through a guide body, preheating the filler metal located at the end portion of the guide body to a temperature just below its melting point by exposing the said end portion of the guide body to heat from a heat supplying burner, sensing the temperature of the filler metal at said end portion, and setting the speed of feed of the filler metal in response to the sensed temperature.
Claim 14
Dependent Claim
27 words
A method according to claim 10, wherein the step of delivering filler metal includes delivering filler metal having of a precious metal content as a minor ingredient.
Claim 15
Dependent Claim
35 words
A method according to claim 10 or claim 11, including cooling the guide body upstream from the location at which it is heated, and regulating the degree of cooling in response to the sensed temperature.
Claim 16
Dependent Claim
50 words
A method according to claim 10 or claim 11, including moving a heat screen between the heat supplying burner and the said end portion of the guide body to shield the said end portion from the heat, and regulating movement of the heat screen in response to the sensed temperature.
Claim 17
Dependent Claim
77 words
A method according to claim 10 or claim 11, including cooling the guide body upstream from the location at which it is heated, and regulating the degree of cooling in response to the sensed temperature, and including moving a heat screen between the heat supplying burner and the said end portion of the guide body to shield the said end portion from the heat, and regulating movement of the heat screen in response to the sensed temperature.
Claim 18
Dependent Claim
48 words
A method according to claim 10 or claim 11, including setting an electronic memory at a preset temperature for melting of the filler metal, and comparing the sensed temperature at the said end portion with the preset temperature for setting the speed of feed of the filler metal.
Claim 19
Dependent Claim
30 words
A method according to claim 10 or claim 11, including delivering a reducing gas to the welding area, and cutting off the reducing gas when feeding of filler metal stops.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-02-14 | 1986-08-16 | 1987-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-14 | 1990-08-16 | 1991-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-14 | 1994-08-16 | 1995-02-15 | $7700.00 | Window Closed / Lapsed |