US3851145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Micro-miniature solder iron
Assignee: Individual
•
Filing: 1973-03-26
•
Granted: 1974-11-26
•
Expires: 1993-03-26
Abstract
Abstract A micro-miniature soldering iron in which a fine copper wire rod is swage fitted into a hollow stainless steel tube having an outside diameter not greater than .025 inches. The copper rod has a forward end terminating in a bevel-shaped working end surface flush with the end of the support tube and with the support tube totally enveloping all portions of the rod except for the exposed shaped working end surface which is adapted to be completely covered by solder when in use. An electric heating coil disposed in the support tube adjacent to the rear end of the rod provides heat for soldering. The bevel-shaped working end surface may be bevelled to any desired angle in accordance with the size of the object to be soldered.
Inventors
- 👤 A Fukanaga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:34
CPC Classifications
B; B23; B23K; B23K3/00; B23K3/02; B23K3/03; B23K3/0338; B23K3/0353
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
132 words
A soldering tip for use in a miniature soldering iron comprising: a hollow support tube of stainless steel material open at its forward end; a rod of copper wire swaged in the bore of said support tube, the dimensions of the support tube being such that the outside diameter of the soldering tip is not greater than .025 inch; a heating element disposed in said tube adjacent the rod; said rod having a rear end adjacent said heating element and a forward end terminating in a shaped working end surface, the side surfaces of said rod being completely encased by the forward end of said support tube, the shaped working end surface of the rod being flush with the open end of the support tube and being exposed through said open end.
Claim 2
Dependent Claim
132 words
A soldering tip for use in a miniature soldering iron comprising: a hollow support tube of stainless steel material open at its forward end; a rod of copper wire swaged in the bore of said support tube, the dimensions of the support tube being such that the outside diameter of the soldering tip is not greater than .025 inch; a heating element disposed in said tube adjacent the rod; said rod having a rear end adjacent said heating element and a forward end terminating in a shaped working end surface, the side surfaces of said rod being completely encased by the forward end of said support tube, the shaped working end surface of the rod being flush with the open end of the support tube and being exposed through said open end.
Claim 3
Dependent Claim
33 words
A soldering tip according to claim 1 wherein the forward end surface of said support tube terminates in a shape to conform with the shape of the working end surface of said rod.
Claim 4
Dependent Claim
17 words
A soldering tip according to claim 2 wherein the working end surface of said rod is beveled.
Claim 5
Dependent Claim
28 words
A soldering tip according to claim 3 wherein the beveled working end surface of said rod provides a single planar surface particularly adapted to be covered by solder.
Claim 6
Dependent Claim
21 words
A soldering tip according to claim 1 wherein said tube is adapted to be detachably connected to a soldering iron handle.
Claim 7
Dependent Claim
60 words
A soldering tip according to claim 1 wherein said heater element comprises a helically wound coil having one end adapted to be connected to a source of electrical power and the other end connected to the rear end of the rod, and wherein the other end of the tube is adapted to be connected to the source of electrical power.
Claim 8
Dependent Claim
27 words
A soldering tip according to claim 1 wherein said support tube has an outside diameter of about .020 inch and a wall thickness of about .004 inch.
Claim 9
Dependent Claim
16 words
A soldering tip according to claim 7 wherein said rod is about .012 inch in diameter.
Claim 10
Dependent Claim
152 words
A micro-miniature soldering iron comprising: a handle; a soldering tip detachably supported in said handle; said soldering tip having an outside diameter not greater than .025 inch and including a support tube of stainless steel material having a hollow bore open at the forward end thereof; a rod of high thermal conductivity copper wire swaged into the open end of the bore of said support tube; and a heating coil disposed in said support tube and adapted to be connected to an electrical power source for providing heat to said rod at the rear end thereof; said rod having a forward end terminating in a shaped working end surface; and said rod having its side surfaces totally encased by the forward end of said support tube, said shaped working end surface being flush with the forward end of tHe support tube and being exposed through the open end of the bore thereof.
Claim 11
Dependent Claim
152 words
A micro-miniature soldering iron comprising: a handle; a soldering tip detachably supported in said handle; said soldering tip having an outside diameter not greater than .025 inch and including a support tube of stainless steel material having a hollow bore open at the forward end thereof; a rod of high thermal conductivity copper wire swaged into the open end of the bore of said support tube; and a heating coil disposed in said support tube and adapted to be connected to an electrical power source for providing heat to said rod at the rear end thereof; said rod having a forward end terminating in a shaped working end surface; and said rod having its side surfaces totally encased by the forward end of said support tube, said shaped working end surface being flush with the forward end of tHe support tube and being exposed through the open end of the bore thereof.
Claim 12
Dependent Claim
43 words
A micro-miniature soldering iron according to claim 9 wherein the working end surface of said rod is beveled to provide a single planar surface adapted to be totally covered by solder, thereby preventing any portion of said rod from being exposed to atmosphere.
References Cited (Backward Citations)
US2547437A
Cited
US2758191A
Cited
US2714651A
Cited
DE1101642B
Cited
US3245599A
Cited
US3121781A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |