Patent US3622019A successfully refreshed from Google Patents.
US3622019A
Expired / Lapsed
US
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Apparatus for removing and replacing charging hole covers of a byproduct coke oven
Assignee: Heinrich Koppers GmbH
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Filing: 1969-10-15
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Granted: 1971-11-23
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Expires: 1989-10-15
Abstract
Abstract A first lever is pivotally secured to the larry car above the coal discharge chute. A second lever is pivotally connected adjacent one end to an arm potion of the first lever. The second lever depends downwardly from the first lever adjacent the coal discharge chute and has an arcuate intermediate portion that positions the second lever other end portion beneath the discharge chute. An electromagnet is secured to the depending end of the second lever and is arranged to magnetically engage the charging hole cover. The pair of levers are so arranged that pivoting of the first lever first moves the second lever depending end portion with the electromagnet secured thereto in a vertical direction to lift the charging hole cover from the charging hole and thereafter in a lateral direction to move the charging hole cover from beneath the coal discharge chute.
Inventors
- 👤 Johannes Lorrek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:40
CPC Classifications
C; C10; C10B; C10B25/00; C10B25/20
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
183 words
Lifting apparatus for removing a charging hole cover from a charging hole of a byproduct coke oven chamber comprising, a larry car having a coal discharge chute operable to be positioned in overlying relation with a coke oven chamber charginG hole, a first lever member pivotally secured to a portion of said larry car above said coal discharge chute, a second lever member pivotally secured adjacent one end to an arm portion of said first lever, said second lever depending downwardly from said first lever adjacent said coal discharge chute, said second lever having an arcuate portion and a lower end portion with a charging hole cover engaging means secured thereto, said second lever arcuate portion operable to position said charging hole cover engaging means beneath said coal discharge chute, and actuating means operable to pivot said first lever and move said second lever lower end portion vertically to thereby remove a charging hole cover engaged to said charging hole cover engaging means from said charging hole and thereafter move said second lever lower end portion laterally from beneath said coal discharge chute.
Claim 2
Dependent Claim
183 words
Lifting apparatus for removing a charging hole cover from a charging hole of a byproduct coke oven chamber comprising, a larry car having a coal discharge chute operable to be positioned in overlying relation with a coke oven chamber charginG hole, a first lever member pivotally secured to a portion of said larry car above said coal discharge chute, a second lever member pivotally secured adjacent one end to an arm portion of said first lever, said second lever depending downwardly from said first lever adjacent said coal discharge chute, said second lever having an arcuate portion and a lower end portion with a charging hole cover engaging means secured thereto, said second lever arcuate portion operable to position said charging hole cover engaging means beneath said coal discharge chute, and actuating means operable to pivot said first lever and move said second lever lower end portion vertically to thereby remove a charging hole cover engaged to said charging hole cover engaging means from said charging hole and thereafter move said second lever lower end portion laterally from beneath said coal discharge chute.
Claim 3
Dependent Claim
41 words
Lifting apparatus for removing a charging hole cover from a charging hole of a byproduct coke oven as set forth in claim 1 in which, said charging hole cover engaging means includes an electromagnet to magnetically engage said charging hole cover.
Claim 4
Dependent Claim
55 words
Lifting apparatus for removing a charging hole cover from a charging hole of a byproduct coke oven as set forth in claim 1 which includes, a piston cylinder assembly mounted on said larry car with the rod of said piston connected to said first lever, said piston cylinder assembly operable to pivot said first lever.
Claim 5
Dependent Claim
45 words
Lifting apparatus for removing a charging hole cover from a charging hole of a byproduct coke oven as set forth in claim 1 which includes, guide means extending laterally from said discharge chute, and resilient means urging said second lever against said first guide means.
Claim 6
Dependent Claim
79 words
Lifting apparatus for removing a charging hole cover from a charging hole of a byproduct coke oven as set forth in claim 1 in which, said first lever has a second arm portion extending angularly from said first lever first arm portion, spring means connected at one end to said second arm portion and at the other end to an intermediate portion of said second lever, said spring means operable to urge said second lever toward said discharge chute.
Claim 7
Dependent Claim
95 words
Lifting apparatus for removing a charging hole cover from a charging hole of a byproduct coke oven as set forth in claim 1 in which, said first lever has a second arm portion extending angularly from said first lever first arm portion, said second arm portion having a guide member thereon operable to engage said second lever upon rotation of said first lever and pivot said second lever about said pivot connection to said first lever first arm portion to thereby move said charging hole cover engaging means laterally from beneath said coal charging chute.
Claim 8
Dependent Claim
69 words
Lifting apparatus for removing a charging hole cover from a charging hole of a byproduct coke oven as set forth in claim 1 which includes, a support bracket secured to said larry car, a pair of guide rollers secured to said support bracket in spaced relation to each other, said second lever positioned between said guide rollers, and means urging one of said guide rollers toward said second lever.
Claim 9
Dependent Claim
57 words
Lifting apparatus for removing a charging hole cover from a charging hole of a byproduct coke oven as set forth in claim 7 in which, said second lever has a second arcuate portion adjacent said pivotal connection to said first lever operable with said pair of guide rollers to move said second lever vertically a preselected distance.
Claim 10
Dependent Claim
82 words
Lifting apparatus for removing a charging hole cover from a charging hole of a byproduct coke oven as set forth in claim 1 in which, said larry car includes a plurality of coal hoppers with depending discharge chutes operable to be aligned with a series of spaced charging holes in a coking chamber, charging hole cover removing apparatus including first and second levers associated with each of said coaL hoppers, and means connecting all of said first levers for simultaneous pivotal rotation.
Claim 11
Dependent Claim
61 words
Lifting apparatus for removing a charging hole cover from a charging hole of a byproduct coke oven as set forth in claim 9 which includes, all of said first levers nonrotatably connected to a common shaft, and drive means to rotate said common shaft and simultaneously pivot all of said levers to thereby simultaneously remove all of said charging hole covers.
References Cited (Backward Citations)
US3079007A
Cited
US3419163A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |