Patent US2162646A successfully refreshed from Google Patents.
US4185545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air circulator
Assignee: USNATIONAL BANK OF OREGON
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Filing: 1978-07-03
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Granted: 1980-01-29
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Expires: 1998-07-03
Abstract
Abstract An air circulating device for suspension from a roof or ceiling structure and including a duct through which upper room air may be directed for discharge into lower temperature air immediately above the room floor. A support structure houses a fan and motor assembly and a collar to receive the duct upper end. The inflatable duct is of a yieldable nature and terminates in spaced relationship to the floor. Provision is made for mixing lower room air with the duct airflow and for the imparting of a rotational direction to the duct discharged airflow.
Inventors
- 👤 Douglas B. Rusth
- 👤 David A. Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:00
CPC Classifications
F; F24; F24F; F24F7/00; F24F7/04; F24F7/06; F24F7/065
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
205 words
An air circulator for circulating heated convective air for attachment to a roof or ceiling structure of a room, said air circulator comprising, a duct formed from a pliable film material suspended from its upper end and discharging an airflow towards the floor area of the room, a fan and motor assembly, a support structure including a dome shaped base to which said fan and motor assembly is attached, hanger means suspending the support structure from an overhead structure, said support structure additionally including mounting means partially enclosed by said base and to which the upper end of said duct is attached whereby the duct is in axial relationship with the fan of the fan and motor assembly, said base having a lowermost outer portion outwardly offset from said mounting means and the upper end of said duct, said base receiving a fan induced flow of heated convective air from that area of the room subjacent the roof or ceiling structure for subsequent downward flow into the duct upper end and passage via said duct and discharge into an area superjacent the floor of the room to heat the latter area, and flow restriction means within the lower portion of said duct for duct inflation.
Claim 2
Dependent Claim
205 words
An air circulator for circulating heated convective air for attachment to a roof or ceiling structure of a room, said air circulator comprising, a duct formed from a pliable film material suspended from its upper end and discharging an airflow towards the floor area of the room, a fan and motor assembly, a support structure including a dome shaped base to which said fan and motor assembly is attached, hanger means suspending the support structure from an overhead structure, said support structure additionally including mounting means partially enclosed by said base and to which the upper end of said duct is attached whereby the duct is in axial relationship with the fan of the fan and motor assembly, said base having a lowermost outer portion outwardly offset from said mounting means and the upper end of said duct, said base receiving a fan induced flow of heated convective air from that area of the room subjacent the roof or ceiling structure for subsequent downward flow into the duct upper end and passage via said duct and discharge into an area superjacent the floor of the room to heat the latter area, and flow restriction means within the lower portion of said duct for duct inflation.
Claim 3
Dependent Claim
39 words
The air circulator claimed in claim 1 wherein said hanger means is of a non-rigid, bridle type having a single chain member permitting momentary pendulous displacement of said support structure upon impact of an article with the air circulator.
Claim 4
Dependent Claim
72 words
The air circulator claimed in claim 1 additionally including air mixing means in place along said duct below the duct midpoint and including a ring defining circumferentially spaced openings, said flow restriction means comprising a collar disposed interiorly of said ring forming a zone of below atmospheric pressure inwardly of said ring openings to induce a flow of room air into said duct via the ring openings to increase downstream duct volume.
Claim 5
Dependent Claim
15 words
The air circulator claimed in claim 3 wherein said collar is of truncated conical shape.
Claim 6
Dependent Claim
15 words
The air circulator claimed in claim 4 wherein said collar is integral with said ring.
Claim 7
Dependent Claim
49 words
The air circulator claimed in claim 3 additionally including dispersal means at the lowermost end of said duct having blades in offset inclined relationship to the duct axis so as to impart a rotational component to the duct discharged airflow to supplement the Coriolis effect and enhance air dispersal.
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) | 1983-01-28 | 1983-07-30 | 1984-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-28 | 1987-07-30 | 1988-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-28 | 1991-07-30 | 1992-01-29 | $7700.00 | Window Closed / Lapsed |