Patent US4589331A successfully refreshed from Google Patents.
US4589331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High blower unit for air distribution system
Assignee: Individual
•
Filing: 1984-07-02
•
Granted: 1986-05-20
•
Expires: 2004-07-02
Abstract
Abstract An air blower comprising a housing having a through passage for air, a blower and a flow sensing device. The through passage has an inlet end and outlet end. The blower is located in the housing and is operable to draw air into the inlet end of the through passage and to blow air out of the outlet end of the through passage. A blower activator is provided which is operable to detect a flow of air into the through passage. The blower activator communicates with the blower to activate the blower when a predetermined air flow into the through passage is detected and to deactivate the blower when less than the predetermined air flow is detected.
Inventors
- 👤 Andrew C. Villamagna
- 👤 Michelle Simone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:41
CPC Classifications
F; F24; F24F; F24F11/00; F24F11/0001; F24F7/00; F24F7/04; F24F7/06; F24F7/065
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
145 words
An air blower assembly for use in an air distribution system in which air is periodically distributed at an elevated rate of flow to a plurality of outlets, comprising; (a) a housing having a through passage for air, said passage having an inlet end and outlet end, (b) a blower in said housing which is operable to draw air into said inlet end of said through passage and to blow air out of said outlet end of said through passage, (c) a flow sensing means arranged to detect the presence or absence of a predetermined air flow into said housing, (d) blower activator means communicating with said blower and said flow sensing means and operable to activate said blower when said predetermined air flow is detected by said flow sensing means and to deactivate said blower when less than the predetermined air flow is detected.
Claim 2
Dependent Claim
145 words
An air blower assembly for use in an air distribution system in which air is periodically distributed at an elevated rate of flow to a plurality of outlets, comprising; (a) a housing having a through passage for air, said passage having an inlet end and outlet end, (b) a blower in said housing which is operable to draw air into said inlet end of said through passage and to blow air out of said outlet end of said through passage, (c) a flow sensing means arranged to detect the presence or absence of a predetermined air flow into said housing, (d) blower activator means communicating with said blower and said flow sensing means and operable to activate said blower when said predetermined air flow is detected by said flow sensing means and to deactivate said blower when less than the predetermined air flow is detected.
Claim 3
Dependent Claim
31 words
An air blower assembly as claimed in claim 1, wherein said flow sensing means is adjustable so as to adjust the predetermined air flow required to activate and deactivate said blower.
Claim 4
Dependent Claim
38 words
An air blower assembly as claimed in claim 1, further comprising first indicator means operable to provide a signal which is indicative of the fact that the air blower assembly is connected to a source of electrical energy.
Claim 5
Dependent Claim
30 words
An air blower assembly as claimed in claim 3, further comprising second indicator means which is operabile to provide a signal which a indicative that the blower is in operation.
Claim 6
Dependent Claim
19 words
An air blower assembly as claimed in claim 1, wherein said blower comprises a pair of electrically driven fans.
Claim 7
Dependent Claim
54 words
An air blower assembly as claimed in claim 1 wherein said flow sensing means comprises a sail switch which comprises an electrical switch and a sail element, said sail element being located so as to operable in response to said predetermined air flow to activate and deactivate said electrical switch as required in use.
Claim 8
Dependent Claim
163 words
An air blower for use in association with an air distribution system of a building or the like for the purpose of increasing the rate at which an air current is discharged from a discharge output of the air distribution system comprising; (a) a housing having a chamber formed therein, an inlet and an outlet communicating with the chamber and cooperating therewith to form a through passage, (b) a fan mounted in said chamber and arranged to increase the rate of flow of air through said passage when in use, (c) switch means communicating with said fan for activating and deactivating said fan, (d) flow sensing means arranged to extend into the path of said air current, said flow sensing means being operable to locate said switch in a position activating said fan when a predetermined air flow is sensed and to locate said switch in a position deactivating said fan when the air flow rate falls below said predetermined air flow rate.
Claim 9
Dependent Claim
163 words
An air blower for use in association with an air distribution system of a building or the like for the purpose of increasing the rate at which an air current is discharged from a discharge output of the air distribution system comprising; (a) a housing having a chamber formed therein, an inlet and an outlet communicating with the chamber and cooperating therewith to form a through passage, (b) a fan mounted in said chamber and arranged to increase the rate of flow of air through said passage when in use, (c) switch means communicating with said fan for activating and deactivating said fan, (d) flow sensing means arranged to extend into the path of said air current, said flow sensing means being operable to locate said switch in a position activating said fan when a predetermined air flow is sensed and to locate said switch in a position deactivating said fan when the air flow rate falls below said predetermined air flow rate.
Claim 10
Dependent Claim
31 words
An air blower assembly as claimed in claim 7, wherein said flow sensing means is adjustable so as to adjust the predetermined air flow required to activate and deactivate said blower.
Claim 11
Dependent Claim
38 words
An air blower assembly as claimed in claim 7, further comprising first indicator means operable to provide a signal which is indicative of the fact that the air blower assembly is connected to a source of electrical energy.
Claim 12
Dependent Claim
30 words
An air blower assembly as claimed in claim 9, further comprising second indicator means which is operable to provide a signal which is indicative that the blower is in operation.
References Cited (Backward Citations)
US1426900A
Cited
US1743994A
Cited
US2161001A
Cited
US2265317A
Cited
US2972941A
Cited
US3099201A
Cited
US3387549A
Cited
US3776214A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-19 | 1989-11-18 | 1990-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-19 | 1993-11-18 | 1994-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-19 | 1997-11-18 | 1998-05-20 | $7700.00 | Window Closed / Lapsed |