US3250203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air distributing device
Assignee: Wehr Corp
•
Filing: 1963-07-03
•
Granted: 1966-05-10
•
Expires: 1983-07-03
Abstract
No abstract record available.
Inventors
- 👤 Joseph W Spradling
- 👤 Gordon C Sylvester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:11
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/044; F24F3/048; F24F3/052; F24F3/0522; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7846
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
IN A TERMINAL CONTROL UNIT HAVING AN ENCLOSURE AND INLET AND OUTLET OPENINGS IN SAID ENCLOSURE, THE COMBINATION OF, PARTITION MEANS ARRANGED IN AND SEPARATING SAID ENCLOSURE INTO FIRST AND SECOND CHAMBERS WITH SAID INLET OPENING IN ONE AND SAID OUTLET OPENING IN THE OTHER OF SAID CHAMBERS, AN ACCESS DOOR RELEASABLY SUPPORTED AT AN ACCESS OPENING IN SAID ENCLOSURE, SAID PARTITION MEANS INCLUDING FLOW CONTROL MEANS CONNECTED TO SAID ACCESS DOOR FOR MOVEMENT THEREWITH AND OPERATIVE TO MAINTAIN A PREDETERMINED CONSTANT VOLUME FLOW OF FLUID BETWEEN SAID FIRST AND SECOND CHAMBERS, AND MEANS EXTENDING FROM A POINT EXTERIORLY OF SAID ENCLOSURE THROUGH SAID ACCESS PANEL FOR SUPPORT FROM SAID ACCESS PANEL AND CONNECTED TO SAID FLOW CONTROL MEANS TO ADJUST SAID FLOW CONTROL MEANS TO VARY THE VOLUME OF FLOW WHICH WILL BE MAINTAINED CONSTANT BY SAID FLOW CONTROL MEANS.
Claim 2
Dependent Claim
141 words
IN A TERMINAL CONTROL UNIT HAVING AN ENCLOSURE AND INLET AND OUTLET OPENINGS IN SAID ENCLOSURE, THE COMBINATION OF, PARTITION MEANS ARRANGED IN AND SEPARATING SAID ENCLOSURE INTO FIRST AND SECOND CHAMBERS WITH SAID INLET OPENING IN ONE AND SAID OUTLET OPENING IN THE OTHER OF SAID CHAMBERS, AN ACCESS DOOR RELEASABLY SUPPORTED AT AN ACCESS OPENING IN SAID ENCLOSURE, SAID PARTITION MEANS INCLUDING FLOW CONTROL MEANS CONNECTED TO SAID ACCESS DOOR FOR MOVEMENT THEREWITH AND OPERATIVE TO MAINTAIN A PREDETERMINED CONSTANT VOLUME FLOW OF FLUID BETWEEN SAID FIRST AND SECOND CHAMBERS, AND MEANS EXTENDING FROM A POINT EXTERIORLY OF SAID ENCLOSURE THROUGH SAID ACCESS PANEL FOR SUPPORT FROM SAID ACCESS PANEL AND CONNECTED TO SAID FLOW CONTROL MEANS TO ADJUST SAID FLOW CONTROL MEANS TO VARY THE VOLUME OF FLOW WHICH WILL BE MAINTAINED CONSTANT BY SAID FLOW CONTROL MEANS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |