US3724751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disc-type steam trap
Assignee: Individual
•
Filing: 1971-02-22
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Granted: 1973-04-03
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Expires: 1991-02-22
Abstract
Abstract A disc type steam trap having a disc valve floatingly arranged within a pressure chamber which is formed by a valve seat and an inner cover, wherein a bimetallic member to be expanded and contracted due to temperature change, an annular member having a conical or inverted conical slanted face on its lower side, an overhanging portion, a valve seat provided with a conical or inverted conical slanted face, a flat annular member, and annular grooves are provided in pertinent combinations to assure high performance of the trap.
Inventors
- 👤 K Fujiwara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:46
CPC Classifications
F; F16; F16T; F16T1/00; F16T1/12; F16T1/16; F16T1/165; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3021; Y10T137/304
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
134 words
In a disc-type steam trap, the combination comprising means defining a valve seat, a disc valve arranged to engage and disengage said valve seat, bimetallic means operable to expand and contract in a diametral direction relative to said disc valve upon exposure to variations in temperature, means comprising a slanted surface extending obliquely to said diametral direction, said bimetallic means engaging said slanted surface to be moved thereby in a direction perpendicular to said diametral direction upon expansion or contraction of said bimetallic means, said combination including an annular member interposed between said bimetallic means and said disc valve for transmitting said perpendicular motion of said bimetallic means to said disc valve to effect movement of said disc valve in said perpendicular direction thereby to effect engagement and disengagement thereof with said valve seat.
Claim 2
Dependent Claim
134 words
In a disc-type steam trap, the combination comprising means defining a valve seat, a disc valve arranged to engage and disengage said valve seat, bimetallic means operable to expand and contract in a diametral direction relative to said disc valve upon exposure to variations in temperature, means comprising a slanted surface extending obliquely to said diametral direction, said bimetallic means engaging said slanted surface to be moved thereby in a direction perpendicular to said diametral direction upon expansion or contraction of said bimetallic means, said combination including an annular member interposed between said bimetallic means and said disc valve for transmitting said perpendicular motion of said bimetallic means to said disc valve to effect movement of said disc valve in said perpendicular direction thereby to effect engagement and disengagement thereof with said valve seat.
Claim 3
Dependent Claim
27 words
A steam trap according to claim 1 comprising means for limiting the extent of movement of said annular member in a direction perpendiculaR to said diametral direction.
Claim 4
Dependent Claim
23 words
A steam trap according to claim 1 comprising means for limiting the extent of movement of said bimetallic means in said diametral direction.
Claim 5
Dependent Claim
18 words
A steam trap according to claim 1 wherein said slanted surface means are located upon said annular member.
Claim 6
Dependent Claim
48 words
A steam trap according to claim 1 wherein said slanted surface means are located separately from said annular member and engage said bimetallic means in a manner to propel said annular member in a direction perpendicular to said diametral direction upon expansion or contraction of said bimetallic means.
Claim 7
Dependent Claim
41 words
A steam trap according to claim 1 comprising means defining an annular chamber within which said bimetallic means is located, said annular chamber means being juxtaposed relative to said bimetallic means to limit expansion and contraction thereof in said diametral direction.
Claim 8
Dependent Claim
45 words
A steam trap according to claim 1 comprising grooved means defined within said steam trap and juxtaposed relative to said bimetallic means to enable accummulation within said grooved means of foreign matter to avoid interference by said foreign matter with movement of said bimetallic means.
Claim 9
Dependent Claim
33 words
A steam trap according to claim 2 wherein said means limiting perpendicular movement of said annular member comprise means abutting said annular member at a predetermined position in the path of movement thereof.
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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |