US3765475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for soldering thick film substrates
Assignee: ITECK CORP
•
Filing: 1971-06-04
•
Granted: 1973-10-16
•
Expires: 1991-06-04
Abstract
Abstract Heating apparatus for rapidly soldering thick film electrical substrates without overheating them and without subjecting them to damaging vibrations. The heating apparatus includes an enclosed housing having a support plate thereon upon which the substrate to be soldered is positioned. A source of radiant heat positioned within the housing is provided to heat the substrate to the desired soldering temperature. Also included in the apparatus is a fan assembly for blowing cooling air through the housing and a deflector assembly for controlling the direction of flow of said cooling air. The deflector assembly is designed to direct cooling air away from the hot plate during a heating interval of the system and to direct the cooling air directly at the hot plate during a cooling interval of the system for rapidly reducing the temperature of the substrate below soldering temperature after soldering has been effected.
Inventors
- 👤 D Hooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:46
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/005; Y; Y10; Y10S; Y10S165/00; Y10S165/903
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
178 words
Heating apparatus comprising: a. a support frame; b. support means positioned on said support frame for receiving an object to be heated, said support means having a low thermal inertia such that it will rapidly heat up upon the application of heat thereto and rapidly cool down upon termination of the application of heat; c. heating means for applying heat to said support means during a first heating interval for heating said object supported thereon; d. means for directing a cooling agent through said support frame; e. deflector means having a first heating position for directing said cooling agent away from said support means during said first heating interval and a second cooling position for directing said cooling agent toward said support means during a second cooling interval following said heating interval; f. drive means for driving said deflector means between said first and second positions; and g. control means coupled to said drive means for controlling the time during which said deflector means remains in said first and second positions for controlling said heating and cooling intervals.
Claim 2
Dependent Claim
178 words
Heating apparatus comprising: a. a support frame; b. support means positioned on said support frame for receiving an object to be heated, said support means having a low thermal inertia such that it will rapidly heat up upon the application of heat thereto and rapidly cool down upon termination of the application of heat; c. heating means for applying heat to said support means during a first heating interval for heating said object supported thereon; d. means for directing a cooling agent through said support frame; e. deflector means having a first heating position for directing said cooling agent away from said support means during said first heating interval and a second cooling position for directing said cooling agent toward said support means during a second cooling interval following said heating interval; f. drive means for driving said deflector means between said first and second positions; and g. control means coupled to said drive means for controlling the time during which said deflector means remains in said first and second positions for controlling said heating and cooling intervals.
Claim 3
Dependent Claim
22 words
Apparatus as recited in claim 1 wherein said cooling agent directing means includes fan means for blowing cooling air through said apparatus.
Claim 4
Dependent Claim
76 words
Apparatus as recited in claim 2 wherein said deflector means includes: a deflector vane pivoted at one end thereof and having a first heating interval position and a second cooling interval position; and wherein said drive means is coupled to said deflector vane and to said control means for driving said vane from said first position to said second position for controlling the direction of flow of said cooling air during said heating and cooling intervals.
Claim 5
Dependent Claim
39 words
Apparatus as recited in claim 3 wherein said control means includes timer means foR controlling the length of time that said vane remains in said first and second positions for controlling the time of said heating and cooling intervals.
Claim 6
Dependent Claim
37 words
Apparatus as recited in claim 1 wherein said heating means further includes means for maintaining said support means at an elevated idle temperature which is less than the temperature of said support means during said heating interval.
Claim 7
Dependent Claim
42 words
Apparatus as recited in claim 5 and including means for maintaining said support means at said idle temperature prior to initiation of said heating interval and for returning said support means to said idle temperature at the termination of said cooling interval.
Claim 8
Dependent Claim
92 words
Apparatus as recited in claim 1 wherein said deflector means comprises a deflector vane pivoted at one end thereof for rotation between said first and second positions and wherein said drive means comprises: a. rotatable crank means; b. a rod pivotally coupled to said crank means and to said deflector vane; and c. motor means for rotating said crank means to impart translational movement to said rod for moving said vane from said first to said second position in a smooth substantially vibration free manner at the end of said heating interval.
Claim 9
Dependent Claim
42 words
Apparatus as recited in claim 7 wherein said crank means has a cam surface thereon and wherein said control means includes switch means cooperable with said cam surface for stopping said motor means when said vane is moved to said second position.
Claim 10
Dependent Claim
56 words
Apparatus as recited in claim 8 wherein said control means further includes timer means for maintaining said vane in said second position for a predetermined period of time constituting said cooling interval; and means for actuating said motor means at the end of said predetermined period of time to return said vane to said first position.
Claim 11
Dependent Claim
157 words
Apparatus for soldering electrical substrates comprising: a. support means for receiving a substrate to be soldered; b. heating means for applying heat to said support means during a first heating interval; c. means for applying a cooling agent to said support means during a second cooling interval following said first heating interval, said cooling agent applying means comprising a fan for blowing cooling air, a deflector vane pivoted at one end thereof and having a first heating interval position and a second cooling interval position, and drive means coupled to said deflector vane for driving said vane from said first position to said second position for controlling the direction of flow of said cooling air during said heating and cooling intervals; and d. control means coupled to said drive means for controlling the time of said heating and cooling intervals by controlling the period of time during which said cooling air is applied to said support means.
Claim 12
Dependent Claim
157 words
Apparatus for soldering electrical substrates comprising: a. support means for receiving a substrate to be soldered; b. heating means for applying heat to said support means during a first heating interval; c. means for applying a cooling agent to said support means during a second cooling interval following said first heating interval, said cooling agent applying means comprising a fan for blowing cooling air, a deflector vane pivoted at one end thereof and having a first heating interval position and a second cooling interval position, and drive means coupled to said deflector vane for driving said vane from said first position to said second position for controlling the direction of flow of said cooling air during said heating and cooling intervals; and d. control means coupled to said drive means for controlling the time of said heating and cooling intervals by controlling the period of time during which said cooling air is applied to said support means.
Claim 13
Dependent Claim
39 words
Apparatus as recited in claim 10 wherein said control means includes timer means for controlling the length of time that said vane remains in said first and second positions for controlling the time of said heating and cooling intervals.
Claim 14
Dependent Claim
117 words
Apparatus for soldering electrical substrates comprising: a. support means for receiving said substrate to be soldered; b. heating means for applying heat to said support means during a first heating interval, said heating means further including idle heating means for maintaining said support means at an elevated idle temperature prior to said heating interval which is less than the temperature of said support means during said heating interval; c. means for applying a cooling agent to said support mans during a second cooling interval following said first heating interval; d. control means for controlling the time of said heating and cooling intervals; and e. means coupled to said idle heating means for controlling said elevated idle temperature.
Claim 15
Dependent Claim
117 words
Apparatus for soldering electrical substrates comprising: a. support means for receiving said substrate to be soldered; b. heating means for applying heat to said support means during a first heating interval, said heating means further including idle heating means for maintaining said support means at an elevated idle temperature prior to said heating interval which is less than the temperature of said support means during said heating interval; c. means for applying a cooling agent to said support mans during a second cooling interval following said first heating interval; d. control means for controlling the time of said heating and cooling intervals; and e. means coupled to said idle heating means for controlling said elevated idle temperature.
Claim 16
Dependent Claim
25 words
Apparatus as set forth in claim 12 including means for returning said support means to said idle temperature at the termination of said cooling interval.
Claim 17
Dependent Claim
36 words
Apparatus aS recited in claim 1 and further including means for coupling said control means to said heating means for terminating the application of heat to said support means at the end of said heating interval.
Claim 18
Dependent Claim
55 words
Apparatus as recited in claim 1 wherein said support means has first and second opposed surfaces and wherein said heating means comprises radiant energy means spaced from said first surface for applying heating radiation to said first surface for heating an object positioned on said second surface by conduction of heat through said support means.
Claim 19
Dependent Claim
34 words
Apparatus as recited in claim 15 wherein said deflector means comprises means for directing said cooling agent toward said radiant energy means during said heating interval for maintaining said radiant energy means relatively cool.
Claim 20
Dependent Claim
64 words
Apparatus as recited in claim 16 wherein said radiant energy means includes a lamp having a perforated reflector positioned thereabout for directing radiant energy toward said first surface of said support means, said cooling agent directing means including means for directing said cooling agent through said perforated reflector and into contact with said lamp during said heating interval for maintaining said lamp relatively cool.
References Cited (Backward Citations)
US2209099A
Cited
US3562481A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |