US3604610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desoldering implement
Assignee: Individual
•
Filing: 1970-02-16
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Granted: 1971-09-14
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Expires: 1990-02-16
Abstract
Abstract A small, hand-held desoldering tool having a spring-loaded piston carried within a cylindrical body member having a removable nozzle element at one end and being substantially open at the other. The piston has a finger-engaging cocking portion which extends radially outwardly through an elongate slot in the cylindrical body member and which permits axial motion of the piston for cocking and flyback. When in the cocked position, a trigger lever carried externally of the body member holds the piston in its forward position. Moving the trigger lever in one direction releases the piston for its flyback stroke and moving it in the opposite sense forces the piston further forward to eject the nozzle element from the body for cleaning or replacement. A rod member carried by the piston extends forwardly through the nozzle element to clean its bore with each cocking cycle. A reading of the complete specification is recommended for a full understanding of the principles and features of the disclosed tool.
Inventors
- 👤 William S Fortune
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:27
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/018
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
312 words
Hand-held, finger-operated desoldering implement comprising: body-barrel member having a forward, nozzle end and a major central portion having, as a function of displacement along its length, a substantially constant and smooth internal surface configuration; tip element of the character to be carried ejectably by frictional engagement by said forward end of said barrel member, said element being formed to include a forwardly extending nozzle member and a central duct therethrough and communicating to the interior of said barrel member for thE travel of mobile substance therethrough; piston means carried within said barrel member in sliding, air seal relation with said smooth internal surface thereof, said piston means including central, forwardly extending, nozzle bore-cleaning rod means for clearing said duct of foreign matter when said piston means travels fully forwardly in said barrel member, said piston means further including rearwardly extending, finger-engageable cocking means; trigger-lever means carried pivotally by said body barrel member at a pivot fulcrum disposed rearwardly from said nozzle end thereof, said trigger-lever means including a body portion extending forwardly to a point contiguous to said nozzle end and having a tip portion normally disposed radially apart from but displaceable toward, in piston-release-triggering operation relation, said barrel member, said trigger-lever means further including a piston-engaging arm portion which is extendable laterally into said barrel member for holding said piston means in a forward disposition and which is removable laterally from within said barrel member for releasing said piston means for its flyback, vacuum stroke action when said tip portion of said trigger-lever means is displaced radially inwardly toward said nozzle portion of said barrel member, said piston and trigger-lever means being further of the character to force said piston means further forwardly into tip-ejecting contact with said tip element when said tip portion of said trigger-lever means is forcefully displaced laterally away from said nozzle portion of said barrel member.
Claim 2
Dependent Claim
312 words
Hand-held, finger-operated desoldering implement comprising: body-barrel member having a forward, nozzle end and a major central portion having, as a function of displacement along its length, a substantially constant and smooth internal surface configuration; tip element of the character to be carried ejectably by frictional engagement by said forward end of said barrel member, said element being formed to include a forwardly extending nozzle member and a central duct therethrough and communicating to the interior of said barrel member for thE travel of mobile substance therethrough; piston means carried within said barrel member in sliding, air seal relation with said smooth internal surface thereof, said piston means including central, forwardly extending, nozzle bore-cleaning rod means for clearing said duct of foreign matter when said piston means travels fully forwardly in said barrel member, said piston means further including rearwardly extending, finger-engageable cocking means; trigger-lever means carried pivotally by said body barrel member at a pivot fulcrum disposed rearwardly from said nozzle end thereof, said trigger-lever means including a body portion extending forwardly to a point contiguous to said nozzle end and having a tip portion normally disposed radially apart from but displaceable toward, in piston-release-triggering operation relation, said barrel member, said trigger-lever means further including a piston-engaging arm portion which is extendable laterally into said barrel member for holding said piston means in a forward disposition and which is removable laterally from within said barrel member for releasing said piston means for its flyback, vacuum stroke action when said tip portion of said trigger-lever means is displaced radially inwardly toward said nozzle portion of said barrel member, said piston and trigger-lever means being further of the character to force said piston means further forwardly into tip-ejecting contact with said tip element when said tip portion of said trigger-lever means is forcefully displaced laterally away from said nozzle portion of said barrel member.
Claim 3
Dependent Claim
63 words
The invention according to claim 1 in which said forward, nozzle end of said barrel member includes spring-retaining shoulder means disposed internally thereof contiguously forwardly of said substantially constant and smooth internal surface, and which further includes axially compressible main spring means disposed between said piston means and said spring-retaining means for causing vacuum-stroke-producing flyback action upon rearward release of said piston means.
Claim 4
Dependent Claim
40 words
The invention according to claim 2 which further includes trigger-spring means disposed between said trigger-lever means and said barrel member for biasing said tip portion of said trigger-level means away from said barrel member and said piston-engaging arm portion inwardly.
Claim 5
Dependent Claim
79 words
The invention according to claim 1 in which said piston means further includes a piston body portion from which forwardly extends said bore-cleaning rod means, and a rearwardly extending piston control end means affixed to the rear of said piston body portion and which is engageable by said piston-engaging arm portion of said trigger-lever means for selectively holding said piston means in a forwardly, cocked disposition and urging said piston means against said tip element for said ejecting thereof.
Claim 6
Dependent Claim
60 words
The invention according to claim 4 in which said piston control end means further includes a finger-engageable surface portion for urging said piston means into its forwardly, cocked position, and in which the rear portion of said barrel member is formed to define an axially elongated cocking slot for cooperative operation with said finger-engageable surface portion of said piston means.
Claim 7
Dependent Claim
25 words
The invention according to claim 5 in which said finger-engageable surface portion comprises a laterally extending tab element disposed radially outwardly through said cocking slot.
Claim 8
Dependent Claim
59 words
The invention according to claim 6 in which said barrel member is open-ended at its rearward extremity with said cocking slot and said substantially constant and smooth internal surface extending therethrough and further defining a window slot through said barrel member for communication therethrough of said piston-engaging arm portion with said piston control end means of said piston means.
Claim 9
Dependent Claim
48 words
The invention according to claim 7 in which said barrel member is substantially cylindrical and is further of the character to include a retaining channel extending cirCumferentially about at least substantially a major portion of the outer surface of said barrel member contiguously to said rear extremity thereof.
Claim 10
Dependent Claim
97 words
The invention according to claim 8 which further includes a stop ring member of the character to be disposed about said barrel member contiguously to said rear extremity thereof, said stop ring member having inwardly protruding, retaining channel-engaging means for axially securing said stop ring member thereto with rotatable freedom circumferentially about said retaining channel, said stop ring member being peripherally noncontinuous by an opening at least as long as approximately the width of said cocking slot whereby when said stop ring opening is circumferentially in register therewith, said piston means is withdrawable from said barrel member.
Claim 11
Dependent Claim
107 words
The invention according to claim 9 in which said stop ring member includes a forward extending trigger-lever-engaging portion which is disposable, by predetermined rotational disposition of said stop ring member, over a portion of said window slot of said barrel member and in which said piston-engaging arm portion of said trigger-lever means includes interference shoulder means which engages said trigger-lever-engaging portion of said stop ring member to limit the intrusion of said arm portion inwardly through said window slot, said stop ring member further including stop ring means for normally effectively closing the rear of said cocking slot for retaining said piston means within said barrel member.
Claim 12
Dependent Claim
134 words
The invention according to claim 10 which further includes rotation-locking detent and detent engagement pair means carried by said stop ring member and said barrel member for removably locking said stop ring member against rotation in a disposition whereby said trigger-lever arm portion is limited in its travel into said window slot and said piston means is retained within said barrel member, and which further includes rotation stop means for, in a first case, limiting the rotation of said stop ring member in a disposition to permit the removal of said tip member by said arm portion of said trigger-lever means, and, in a second case, permitting the circumferential registering of said cocking slot with said opening in said stop ring member whereby said piston means may be removed rearwardly from said barrel member.
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) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |