Patent US4095458A successfully refreshed from Google Patents.
US4095458A
Expired / Lapsed
US
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Hygrostat
Assignee: Siemens Building Technologies AG
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Filing: 1977-03-14
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Granted: 1978-06-20
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Expires: 1997-03-14
Abstract
Abstract A hygrometer or hygrostat containing a hygroscopic body formed of wood.
Inventors
- 👤 Ernst Wild
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:19
CPC Classifications
G; G01; G01N; G01N19/00; G01N19/10; A; A01; A01G; A01G25/00; A01G25/16; A01G25/167; Y; Y10; Y10T; Y10T137/00; Y10T137/1842; Y10T137/1866; Y10T137/189
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
119 words
A hygrostat comprising: a hygroscopic body; said hygroscopic body being formed of wood; a pervious housing formed of hydrophobic material; said hygroscopic body being arranged in said housing; said hygroscopic body comprising a wooden rod having opposed ends; means coupled with one end of said wooden rod; a support element coupled with the housing for supporting the other end of said wooden rod; stop means for limiting the stroke of said one end of said wooden rod; a compensation spring operatively connected with said housing by means of said support element for coupling the other end of said wooden rod with said housing; and said support means is provided with means for adjusting the position of said compensation spring.
Claim 2
Dependent Claim
119 words
A hygrostat comprising: a hygroscopic body; said hygroscopic body being formed of wood; a pervious housing formed of hydrophobic material; said hygroscopic body being arranged in said housing; said hygroscopic body comprising a wooden rod having opposed ends; means coupled with one end of said wooden rod; a support element coupled with the housing for supporting the other end of said wooden rod; stop means for limiting the stroke of said one end of said wooden rod; a compensation spring operatively connected with said housing by means of said support element for coupling the other end of said wooden rod with said housing; and said support means is provided with means for adjusting the position of said compensation spring.
Claim 3
Dependent Claim
26 words
The hygrostat as defined in claim 1, wherein: said means coupled with said one end of said wooden rod comprises a closure portion of a valve.
Claim 4
Dependent Claim
22 words
The hygrostat as defined in claim 1, wherein: said means coupled with said one end of said wooden rod comprises a switch.
Claim 5
Dependent Claim
43 words
The hygrostat as defined in claim 1, wherein: said housing comprises a substantially tubular-shaped member equipped with openings; and said support element including a threaded sleeve threadably secured into one end of the housing; said compensation spring being arranged in said threaded sleeve.
Claim 6
Dependent Claim
50 words
The hygrostat as defined in claim 2, wherein: said means coupled with one end of said wooden rod comprises a closure portion of a valve; said valve constituting a membrane valve having a membrane; and a plunger supported at said one end of said wooden rod for actuating said membrane.
Claim 7
Dependent Claim
186 words
A hygrostat comprising: a hygroscopic body; said hygroscopic body being formed of wood; a pervious housing formed of hydrophobic material; said hygroscopic body being arranged in said housing; said hygroscopic body comprising a wooden rod having opposed ends; means coupled with one end of said wooden rod; a support element coupled with the housing for supporting the other end of said wooden rod; said means coupled with one end of said wooden rod comprises a closure portion of a valve; said valve constituting a membrane valve having a membrane; a plunger supported at said one end of said wooden rod for actuating said membrane; said housing comprises a substantially tubular-shaped element provided with openings; said support element including a threaded sleeve threaded into one end of said housing; said compensation spring being arranged in said threaded sleeve; said valve including a valve chamber; a retaining nut threaded onto said housing; said retaining nut being provided with said valve chamber; said housing having an internal compartment; and said membrane having peripheral edge means which seal said valve chamber with respect to said internal compartment of said housing.
Claim 8
Dependent Claim
186 words
A hygrostat comprising: a hygroscopic body; said hygroscopic body being formed of wood; a pervious housing formed of hydrophobic material; said hygroscopic body being arranged in said housing; said hygroscopic body comprising a wooden rod having opposed ends; means coupled with one end of said wooden rod; a support element coupled with the housing for supporting the other end of said wooden rod; said means coupled with one end of said wooden rod comprises a closure portion of a valve; said valve constituting a membrane valve having a membrane; a plunger supported at said one end of said wooden rod for actuating said membrane; said housing comprises a substantially tubular-shaped element provided with openings; said support element including a threaded sleeve threaded into one end of said housing; said compensation spring being arranged in said threaded sleeve; said valve including a valve chamber; a retaining nut threaded onto said housing; said retaining nut being provided with said valve chamber; said housing having an internal compartment; and said membrane having peripheral edge means which seal said valve chamber with respect to said internal compartment of said housing.
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) | 1981-06-19 | 1981-12-19 | 1982-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-19 | 1985-12-19 | 1986-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-19 | 1989-12-19 | 1990-06-20 | $7700.00 | Window Closed / Lapsed |