US3792228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric soldering iron
Assignee: Individual
•
Filing: 1972-09-20
•
Granted: 1974-02-12
•
Expires: 1992-09-20
Abstract
Abstract The soldering iron has a grip with a recess rotatably receiving a roll of wound wire-solder. A guide means extends from the grip toward the point of a heated soldering tip, for receiving the wire solder and guiding it toward the soldering tip. A pair of rotatable interfitting gears have facing and mating annular grooves therein through which the wire-solder passes and as the gears are rotated the solder is fed toward the soldering tip. One of the two gears may be driven by an electric motor in the grip, upon operation of a suitable switch, and the other is spring biased toward the one gear to firmly grip the wire-solder. A manual operator, in the form of a disc having a perforated periphery, is secured to the gear normally driven by the motor and this periphery extends through a slot or opening in a wall of the grip. Wire-solder can be delivered automatically or manually to the pointed head of the tip of the heater through the wiredelivery pipe by closing the motor switch or rotating the periphery of the disk with a finger tip, and the soldering can be conducted easily with one hand.
Inventors
- 👤 Cheng K Wei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:45
CPC Classifications
B; B23; B23K; B23K3/00; B23K3/06; B23K3/0607; B23K3/0615
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
234 words
An electric soldering iron comprising, in combination, a hollow grip having means arranged therein for mounting therein a coil of wire-solder; a pointed soldering tip extending from said grip; electrically energized means operatively associated with said tip and operable to heat the same; wire guide means extending from said grip to adjacent the point of said tip for guiding the wire-solder from the coil to the tip an electric motor in said grip having a rotatable output shaft; a pair of rotatable interfitting gears mounted in said grip and arranged to grip wire-solder therebetween to feed the wire-solder through said guide means to the point of said tip; one of said gears being secured on a rotable support shaft coupled to the output shaft of said motor; said gears being formed with mating and facing annular recesses in their teeth intermediate the axially opposite ends of their teeth for receiving the wire-solder; a finger-operated switch in circuit with said motor for controlling energization of said motor; and a finger tip actuated manual operator means connected to said support shaft and projecting through an opening in a wall of said grip for rotating said support shaft; whereby said soldering iron may be held with one hand and a finger of the one hand may be used selectively to operate said switch or to actuate said manual operator to feed wire-solder to said pointed soldering tip.
Claim 2
Dependent Claim
234 words
An electric soldering iron comprising, in combination, a hollow grip having means arranged therein for mounting therein a coil of wire-solder; a pointed soldering tip extending from said grip; electrically energized means operatively associated with said tip and operable to heat the same; wire guide means extending from said grip to adjacent the point of said tip for guiding the wire-solder from the coil to the tip an electric motor in said grip having a rotatable output shaft; a pair of rotatable interfitting gears mounted in said grip and arranged to grip wire-solder therebetween to feed the wire-solder through said guide means to the point of said tip; one of said gears being secured on a rotable support shaft coupled to the output shaft of said motor; said gears being formed with mating and facing annular recesses in their teeth intermediate the axially opposite ends of their teeth for receiving the wire-solder; a finger-operated switch in circuit with said motor for controlling energization of said motor; and a finger tip actuated manual operator means connected to said support shaft and projecting through an opening in a wall of said grip for rotating said support shaft; whereby said soldering iron may be held with one hand and a finger of the one hand may be used selectively to operate said switch or to actuate said manual operator to feed wire-solder to said pointed soldering tip.
Claim 3
Dependent Claim
55 words
An electric soldering iron, as claimed in claim 1, in which the other of said gears is mounted on a second support shaft movable toward and away from said first mentioned support shaft; and biasing means associated with said second support shaft to bias said other gear toward said one gear to grip wire-solder therebetween.
Claim 4
Dependent Claim
36 words
An electric soldering iron, as claimed in claim 1, in which said finger tip actuated manual operator is a disc secured to said support shaft and having its periphery projecting through a slot in said grip.
Claim 5
Dependent Claim
18 words
An electric soldering iron, as claimed in claim 3, in which the periphery of said disc is knurled.
Claim 6
Dependent Claim
79 words
An electric soldering iron, as claimed in claim 1, in which said electric motor is mounted in an upper part of said grip and the lower part of said grip is adapted to mount a coil of wire-solder; and a support extending from said grip, said electrically energized heating means comprising a heater mounted in said support; said pointed soldering tip comprising a copper bar interchangeably secured in said heater; said wire guide means being supported from said support.
Claim 7
Dependent Claim
78 words
An electric soldering iron, as claimed in clAim 1, in which said electric motor is mounted in the lower end of said grip; the upper end of said grip being adapted to mount a coil of wire-solder therein; said electrically energized means comprising a transformer mounted in said grip and a loop of electric resistance wire, forming said pointed soldering tip, and having a pointed bight and having its ends connected to the output terminals of said transformer.
Claim 8
Dependent Claim
40 words
An electric soldering iron, as claimed in claim 6, including a switch controlling connection of said transformer to a source of electric potential; and an indicating lamp mounted in said grip and illuminated responsive to closure of said last-named switch.
Claim 9
Dependent Claim
28 words
An electric soldering iron, as claimed in claim 6, in which said wire guide means comprises an elongated guide extending upwardly and forwardly to adjacent said pointed bight.
References Cited (Backward Citations)
US538695A
Cited
US1906225A
Cited
US2119462A
Cited
US2432428A
Cited
US2590806A
Cited
US2901585A
Cited
US2871333A
Cited
US3219251A
Cited
US3257306A
Cited
US3390826A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |