Patent US3014622A successfully refreshed from Google Patents.
Patent US3592992A successfully refreshed from Google Patents.
US3592992A
Expired / Lapsed
US
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Soldering method and apparatus
Assignee: Argus International
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Filing: 1969-03-13
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Granted: 1971-07-13
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Expires: 1989-03-13
Abstract
Abstract A method of heating selected areas of an element having at least one portion that is to remain relatively unheated, in which radiant energy from a radiant energy source is focused upon the element by suitable reflector means, and a masking member is positioned over the protected portion to serve the dual functions of deflecting radiant energy away from the protected portion and directing the radiant energy which would otherwise strike the masked portion to impinge upon the selected areas and thereby increase the energy density upon the selected areas. The above method may be utilized for either heating or tinning the leads of electronic devices, or soldering the leads of electronic devices to associated terminals. In order that the soldering operation be performed rapidly and reliably, the solder may be prepared in granulated form suspended in a binder, and spread upon the selected areas to be tinned or soldered, and is exposed to the radiant energy where the solder paste absorbs significantly more radiant energy than conventional solder to form a good solder joint more rapidly than through the use of conventional solder and conventional soldering techniques.
Inventors
- 👤 Bernard J Costello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:07
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/34; H05K3/3494; B; B23; B23K; B23K1/00; B23K1/005; B23K1/0053; H05K2201/00; H05K2201/01; H05K2201/0104; H05K2201/0112; H05K3/341; H05K3/3421; H05K3/3465; H05K3/3485
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
152 words
A method for rapidly heating selected portions of an element, which selected portions extend generally outwardly from adjacent body portions which are more sensitive to heat than said selected portions, comprising the steps of: a. exposing the element to radiation sufficient to rapidly heat the entire element to a desired temperature level during a predetermined time interval; b. positioning a mask upon the element for masking at least the body portion of the element being heated to prevent radiation from striking the masked portion; c. deflecting the radiation which would normally impinge upon the masked portion toward the adjacent selected portions of the element which are to be heated and thereby increasing the radiation impinging upon such selected portions while protecting the body portion from being damaged by the radiant energy so as to maintain the body portion at a reduced temperature level relative to said selected portions during the heated interval.
Claim 2
Independent Claim
152 words
A method for rapidly heating selected portions of an element, which selected portions extend generally outwardly from adjacent body portions which are more sensitive to heat than said selected portions, comprising the steps of: a. exposing the element to radiation sufficient to rapidly heat the entire element to a desired temperature level during a predetermined time interval; b. positioning a mask upon the element for masking at least the body portion of the element being heated to prevent radiation from striking the masked portion; c. deflecting the radiation which would normally impinge upon the masked portion toward the adjacent selected portions of the element which are to be heated and thereby increasing the radiation impinging upon such selected portions while protecting the body portion from being damaged by the radiant energy so as to maintain the body portion at a reduced temperature level relative to said selected portions during the heated interval.
Claim 3
Dependent Claim
29 words
The method of claim 1 wherein step (a) further comprises exposing the element to a source of infrared radiation capable of heating the element to a desired temperature level.
Claim 4
Independent Claim
164 words
A method for heating selected portions of an element comprising the steps of: a. providing an omnidirectional source of radiant energy; b. reflecting a major portion of the radiant energy to focus the reflected radiant energy upon a predetermined substantially planar surface area whereby both direct and reflected radiant energy is distributed over said predetermined area; c. positioning the element within the predetermined area to expose the element to radiation sufficient to heat the element to a predetermined temperature level; d. masking at least a portion of the element being heated to prevent radiation from striking the masked portion; e. deflecting at least a portion of the radiation which would normally impinge upon the masked portion toward the adjacent selected portions of the element which are to be heated and thereby increasing the radiation impinging upon such selected portions so as to maintain the masked portion of the element at a reduced temperature level relative to the adjacent unmasked portions during the heating interval.
Claim 5
Independent Claim
164 words
A method for heating selected portions of an element comprising the steps of: a. providing an omnidirectional source of radiant energy; b. reflecting a major portion of the radiant energy to focus the reflected radiant energy upon a predetermined substantially planar surface area whereby both direct and reflected radiant energy is distributed over said predetermined area; c. positioning the element within the predetermined area to expose the element to radiation sufficient to heat the element to a predetermined temperature level; d. masking at least a portion of the element being heated to prevent radiation from striking the masked portion; e. deflecting at least a portion of the radiation which would normally impinge upon the masked portion toward the adjacent selected portions of the element which are to be heated and thereby increasing the radiation impinging upon such selected portions so as to maintain the masked portion of the element at a reduced temperature level relative to the adjacent unmasked portions during the heating interval.
Claim 6
Dependent Claim
48 words
The method of claim 3 wherein step (b) further comprises: i. reflecting the radiant energy to focus the reflected radiant energy upon a predetermined surface area whereby the radiant energy is in a narrow elongated pattern where the distribution of energy is substantially unIform in the long direction.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |