Patent US3684263A successfully refreshed from Google Patents.
US3684263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum oil quench furnace
Assignee: Sola Basic Industries Inc
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Filing: 1970-02-12
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Granted: 1972-08-15
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Expires: 1990-02-12
Abstract
Abstract A vacuum quenching apparatus comprises a vacuum chamber in which is mounted a heating furnace and a quenching tank. A dolly rides on rails from a position over the quenching tank to a position adjacent the furnace and is provided with parallel supporting arms which support a load therebetween and which extend into the furnace when the dolly is positioned adjacent thereto. The arms are counter-rotatable so as to release a load and permit the load to descend vertically downwardly either within the furnace or upon a hydraulic cylinder mounted within the quench tank. An end of the chamber is also displaceable, and the dolly moves outwardly with the displaceable end to permit loading or unloading.
Inventors
- 👤 Kurt Genrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:53
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/74; C21D1/773; C21D1/62; C21D1/63; C21D1/64
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
143 words
In an integral vacuum heat-treatiNg and quenching apparatus, chamber means evacuable to sub-atmospheric pressure, a heating furnace within said chamber means, a quenching tank within said chamber means and lower than said heating furnace, a horizontally movable transfer mechanism movable into and out of said furnace and to a position over said quenching tank, means mounted on said horizontally movable transfer mechanism for supporting a load and operable for releasing a load supported thereon vertically downwardly, and vertically movable transfer means within said quenching tank movable upwardly to receive a load when released from said transfer mechanism when the transfer mechanism is in position over the quenching tank and moving the load downwardly without the horizontally movable transfer means and into the quenching tank and for moving it upwardly after quenching where it can again be transferred onto said horizontally movable transfer mechanism.
Claim 2
Dependent Claim
143 words
In an integral vacuum heat-treatiNg and quenching apparatus, chamber means evacuable to sub-atmospheric pressure, a heating furnace within said chamber means, a quenching tank within said chamber means and lower than said heating furnace, a horizontally movable transfer mechanism movable into and out of said furnace and to a position over said quenching tank, means mounted on said horizontally movable transfer mechanism for supporting a load and operable for releasing a load supported thereon vertically downwardly, and vertically movable transfer means within said quenching tank movable upwardly to receive a load when released from said transfer mechanism when the transfer mechanism is in position over the quenching tank and moving the load downwardly without the horizontally movable transfer means and into the quenching tank and for moving it upwardly after quenching where it can again be transferred onto said horizontally movable transfer mechanism.
Claim 3
Dependent Claim
147 words
In an integral vacuum heat-treating and quenching apparatus, chamber means evacuable to sub-atmospheric pressure, a heating furnace within said chamber means, a quenching tank within said chamber means and lower than said heating furnace, a horizontally movable transfer mechanism movable into and out of said furnace and to a position over said quenching tank, means on said horizontally movable transfer mechanism for supporting a load and for releasing a load vertically downwardly, said transfer mechanism including rail means within said chamber extending over said quenching tank and underneath said furnace, and a dolly movably mounted on said rail means, and vertically movable transfer means within said quenching tank movable upwardly to receive a load when released from said transfer mechanism when the transfer mechanism is in position over the quenching tank and moving the load downwardly into the quenching tank and for moving it upwardly after quenching.
Claim 4
Dependent Claim
147 words
In an integral vacuum heat-treating and quenching apparatus, chamber means evacuable to sub-atmospheric pressure, a heating furnace within said chamber means, a quenching tank within said chamber means and lower than said heating furnace, a horizontally movable transfer mechanism movable into and out of said furnace and to a position over said quenching tank, means on said horizontally movable transfer mechanism for supporting a load and for releasing a load vertically downwardly, said transfer mechanism including rail means within said chamber extending over said quenching tank and underneath said furnace, and a dolly movably mounted on said rail means, and vertically movable transfer means within said quenching tank movable upwardly to receive a load when released from said transfer mechanism when the transfer mechanism is in position over the quenching tank and moving the load downwardly into the quenching tank and for moving it upwardly after quenching.
Claim 5
Dependent Claim
36 words
In an apparatus as claimed in claim 2 wherein said dolly comprises a pair of parallel supporting arms positioned to extend into said furnace when the dolly is moved on said rail means underneath the furnace.
Claim 6
Dependent Claim
37 words
In an apparatus as claimed in claim 2 wherein said arms extend parallel to said rail means and are spaced apart greater than the width of a load, and means on said arms for supporting a load.
Claim 7
Dependent Claim
41 words
In an apparatus as claimed in claim 2 wherein said supporting means comprise inwardly extending ledges, and means for counter-rotating said arms to pivot said ledges from under a load so that the load is released downwardly between said supporting arms.
Claim 8
Dependent Claim
67 words
In an apparatus as claimed in claim 2 wherein said transfer mechanism comprises rail means within said chamber extending over said quenching tank and underneath said furnace, a dolly movably mounted on said rail means, said rails being slidably mounted within said chamber and movable with said displaceable end member so that the dolly thereon may be withdrawn from the chamber in a loading and unloading position.
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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |