Patent US4073697A successfully refreshed from Google Patents.
US4073697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impact absorbing attachment for riser cover
Assignee: Didier Engineering GmbH
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Filing: 1976-10-14
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Granted: 1978-02-14
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Expires: 1996-10-14
Abstract
Abstract A riser cover is fixed to a shaft which is rotated in bearing projections of a bearing member which is attached to a riser. Impact transmitted to the bearing member upon opening of the cover is absorbed and damped before it is transmitted to the riser. Shock absorbing elements, preferably in the form of plate springs, are positioned between the bearing member and a supporting device of the riser.
Inventors
- 👤 Martin Protzl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:24
CPC Classifications
C; C10; C10B; C10B27/00; C10B27/06
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
145 words
In a riser for transmitting fill gases from a coke-oven chamber to a collecting main, said riser being of the type including a riser corner element having an opening therein, a cover fixedly mounted on a shaft, said shaft being rotatable to move said cover from a closed position covering said opening to an open position uncovering said opening, and means for rotatably mounting said shaft to said riser corner element, the improvement wherein said mounting means comprises: a supporting device rigid with said riser corner element; a cover bearing member separate from said supporting device, said shaft being rotatably mounted in said bearing member; means for attaching said bearing member to said supporting device; and at least one shock absorbing means, positioned between said bearing member and said supporting device, for damping impacts imparted to said bearing member due to opening of said cover.
Claim 2
Dependent Claim
145 words
In a riser for transmitting fill gases from a coke-oven chamber to a collecting main, said riser being of the type including a riser corner element having an opening therein, a cover fixedly mounted on a shaft, said shaft being rotatable to move said cover from a closed position covering said opening to an open position uncovering said opening, and means for rotatably mounting said shaft to said riser corner element, the improvement wherein said mounting means comprises: a supporting device rigid with said riser corner element; a cover bearing member separate from said supporting device, said shaft being rotatably mounted in said bearing member; means for attaching said bearing member to said supporting device; and at least one shock absorbing means, positioned between said bearing member and said supporting device, for damping impacts imparted to said bearing member due to opening of said cover.
Claim 3
Dependent Claim
14 words
The improvement claimed in claim 1, wherein said shock absorbing means comprises plate springs.
Claim 4
Dependent Claim
17 words
The improvement claimed in claim 1, wherein each said shock absorbing means comprises two opposed plate springs.
Claim 5
Dependent Claim
14 words
The improvement claimed in claim 1, comprising two pairs of said shock absorbing means.
Claim 6
Dependent Claim
58 words
The improvement claimed in claim 1, wherein said bearing member comprises an elongate member having opposite ends, and said means for attaching comprises plural connecting bolt means attaching said opposite ends of said bearing member to said supporting device, said shock absorbing means being positioned between said connecting bolt means in the longitudinal direction of said bearing member.
Claim 7
Dependent Claim
20 words
The improvement claimed in claim 1, further comprising pin means for mounting said shock absorbing means to said supporting device.
Claim 8
Dependent Claim
20 words
The improvement claimed in claim 1, wherein said attaching means comprises connecting bolt means, extending through said shock absorbing means.
Claim 9
Dependent Claim
33 words
The improvement claimed in claim 1, further comprising a cover holder mounting said cover to said shaft, said cover holder having abutment means for contacting said bearing member upon opening of said cover.
Claim 10
Dependent Claim
30 words
The improvement claimed in claim 1, wherein said supporting device comprises plural ribs integral with and extending from said riser corner element, and a supporting plate integral with said ribs.
Claim 11
Dependent Claim
12 words
The improvement claimed in claim 9, comprising three equally spaced said ribs.
Claim 12
Dependent Claim
61 words
The improvement claimed in claim 10, wherein said bearing member comprises an elongate member having opposite ends, and said means for attaching comprises pairs of connecting bolt means attaching said opposite ends of said bearing member to said supporting device at positions outwardly of outermost of said ribs, said shock absorbing means being positioned between said pairs of connecting bolt means.
Claim 13
Dependent Claim
23 words
The improvement claimed in claim 10, comprising a first shock absorbing means positioned approximately midway between first and second adjacent of said ribs.
Claim 14
Dependent Claim
34 words
The improvement claimed in claim 12, further comprising second shock absorbing means positioned approximately one-third the distance between a third of said ribs and said second rib, said second and third ribs being adjacent.
Claim 15
Dependent Claim
18 words
The improvement claimed in claim 10, wherein said bearing member has plural integral projections rotatably supporting said shaft.
Claim 16
Dependent Claim
76 words
The improvement claimed in claim 14, further comprising a counterweight and an impact weight mounted on one end of said shaft at a position outwardly of said projections, said counterweight being fixedly and non-rotatably attached to said shaft, said impact weight being rotatably mounted on said shaft, said counterweight having thereon stop means at a position to be contacted by said impact weight upon rotation of said impact weight about said shaft relative to said counterweight.
Claim 17
Dependent Claim
26 words
The improvement claimed in claim 14, comprising two pairs of said projections, two outermost of said projections being aligned with the two outermost of said ribs.
Claim 18
Dependent Claim
38 words
The improvement claimed in claim 16, further comprising a cover holder having a first end thereof connected to said cover and a second end thereof fixed to said shaft at a position between two innermost of said projections.
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) | 1981-02-13 | 1981-08-15 | 1982-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-13 | 1985-08-15 | 1986-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-13 | 1989-08-15 | 1990-02-14 | $7700.00 | Window Closed / Lapsed |