Patent US3996952A successfully refreshed from Google Patents.
US3996952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control damper
Assignee: Philips Industrial Components Inc
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Filing: 1975-09-18
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Granted: 1976-12-14
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Expires: 1995-09-18
Abstract
Abstract A control damper is mounted in a building duct system for closing a control opening through a housing or frame and includes a linkage connected to the housing and to a vane positioned in the control opening and is operative for moving the vane between a flow permitting position and a position closing the control opening. The linkage includes a fusible portion permitting a resilient member to move the vane to the position closing the control opening in the event of temperature above the melting point of the fusible portion. Cooperating latch members are mounted on the housing and on the vane and are moved into vane holding engagement after melting of a fusible portion and movement of the vane to the position closing the control opening through the housing.
Inventors
- 👤 James R. Root
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:57
CPC Classifications
A; A62; A62C; A62C2/00; A62C2/06; A62C2/12; A62C2/14; F; F16; F16K; F16K17/00; F16K17/36; F16K17/38; F16K17/383; Y; Y10; Y10S; Y10S292/00; Y10S292/66; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1797; Y10T137/1819; Y10T137/1834; Y10T137/8593; Y10T137/87265; Y10T137/8741; Y10T137/87442; Y10T137/87467; Y10T137/87475
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
268 words
A control damper for a fluid conduit, said control damper comprising: a. a housing defining a control opening; b. at least one vane mounted in said housing and having opposed side portions and movable between a fluid flow permitting position and a position closing the control opening; c. resilient means mounted on said housing and connected to said vane for urging same into the position closing the control opening; d. means mounted on said housing and connected to said vane for moving same between the flow permitting position and the position closing the control opening and having a fusible portion thereby allowing said resilient means to move said vane into the position closing said control opening in the event of temperature above the melting point of said fusible portion; e. means mounted on said vane and said housing for retaining said vane in the position closing the control opening after melting of said fusible portion, said means for retaining said vane in said closing position after melting of said fusible portion including: 1. a stop member mounted on said housing adjacent said vane; 2. a fusible link having opposite ends; 3. a first holder member mounted on said vane and having one end of said fusible link connected thereto; and 4. a second holder member mounted on said vane and having the other end of said fusible link connected thereto, said second holder member being resilient and retained in a position to clear said stop member during movement of said vane and movable to a position in engagement with said stop member upon melting of said fusible link.
Claim 2
Dependent Claim
268 words
A control damper for a fluid conduit, said control damper comprising: a. a housing defining a control opening; b. at least one vane mounted in said housing and having opposed side portions and movable between a fluid flow permitting position and a position closing the control opening; c. resilient means mounted on said housing and connected to said vane for urging same into the position closing the control opening; d. means mounted on said housing and connected to said vane for moving same between the flow permitting position and the position closing the control opening and having a fusible portion thereby allowing said resilient means to move said vane into the position closing said control opening in the event of temperature above the melting point of said fusible portion; e. means mounted on said vane and said housing for retaining said vane in the position closing the control opening after melting of said fusible portion, said means for retaining said vane in said closing position after melting of said fusible portion including: 1. a stop member mounted on said housing adjacent said vane; 2. a fusible link having opposite ends; 3. a first holder member mounted on said vane and having one end of said fusible link connected thereto; and 4. a second holder member mounted on said vane and having the other end of said fusible link connected thereto, said second holder member being resilient and retained in a position to clear said stop member during movement of said vane and movable to a position in engagement with said stop member upon melting of said fusible link.
Claim 3
Dependent Claim
80 words
A control damper as set forth in claim 1 wherein: a. said means for moving said vane between the flow permitting position and the position closing the control opening includes: 1. a first bracket mounted on said housing; 2. a second bracket mounted on said vane and movable therewith; and 3. an arm operatively connected to said first bracket and movable relative to same, said arm having said fusible portion connected thereto and extending therefrom and connected to said bracket.
Claim 4
Dependent Claim
95 words
A control damper as set forth in claim 2 wherein: a. said housing has a plurality of vanes mounted therein and including an upper vane and a lower vane; b. each of said vanes has an axle portion extending therefrom and outwardly through said housing; c. each of said axle portions has an arm extending therefrom; and d. a connector link pivotally is connected to each of said arms whereby movement of one of said vanes effects movement of all of said vanes and locking of one of said vanes locks all of said vanes.
Claim 5
Dependent Claim
70 words
A control damper as set forth in claim 3 wherein: a. said second bracket of said means for moving said vanes between the flow permitting position and the position closing the control opening is mounted on the upper vane; and b. said first holder member and said second holder member of said means for retaining said vanes in the position closing the control opening are mounted on the lower vane.
Claim 6
Dependent Claim
179 words
A control damper for a fluid conduit, said control damper comprising: a. a housing having side walls defining a control opening; b. a plurality of elongated vanes mounted in said housing and including at least a first vane and at least a second vane with connecting mechanism for simultaneous movement, said vanes each having opposed side portions and being movable between a fluid flow permitting position and a position closing the control opening; c. a resilient member mounted on said housing and connected to one of said vanes for urging same into the position closing the control opening; d. means mounted on said housing and connected to first vane for moving said vanes between the flow permitting position and the position closing the control opening and having a fusible portion thereby allowing said resilient member to move said respective vanes into the position closing the control opening in the event of temperature above the melting point of said fusible portion, said means for moving said vanes between the flow permitting position and the position closing the control opening including:
Claim 7
Dependent Claim
179 words
A control damper for a fluid conduit, said control damper comprising: a. a housing having side walls defining a control opening; b. a plurality of elongated vanes mounted in said housing and including at least a first vane and at least a second vane with connecting mechanism for simultaneous movement, said vanes each having opposed side portions and being movable between a fluid flow permitting position and a position closing the control opening; c. a resilient member mounted on said housing and connected to one of said vanes for urging same into the position closing the control opening; d. means mounted on said housing and connected to first vane for moving said vanes between the flow permitting position and the position closing the control opening and having a fusible portion thereby allowing said resilient member to move said respective vanes into the position closing the control opening in the event of temperature above the melting point of said fusible portion, said means for moving said vanes between the flow permitting position and the position closing the control opening including:
Claim 8
Dependent Claim
238 words
a pair of laterally spaced first brackets each mounted on a respective one of said side walls of said housing, said first brackets being laterally aigned; 2. a shaft extending between and rotatably supported on said first brackets; 3. a second bracket mounted on the upper vane and movable therewith; and 4. an arm mounted on said shaft and movable therewith relative to said first brackets, said arm having said fusible portion connected thereto and extending therefrom and connected to said second bracket thereby retaining said vanes in a respective selected position; e. means mounted on said second vane and on said housing for retaining said vanes in the position closing the control opening after melting of said fusible portion, said means for retaining said vanes in said closing position after melting of said fusible portion including: 1. a stop member mounted on said housing adjacent the second vane; 2. a fusible link having opposite ends; 3. a first holder member mounted on said second vane and having the other end of said fusible link connected thereto; and 4. a second holder member mounted on said second vane and having the other end of said fusible link connected thereto, said second holder member being resilient and retained in a position to clear said stop member during movement of said second vane and moveable to a position in engagement with said stop member upon melting of said fusible link.
Claim 9
Dependent Claim
238 words
a pair of laterally spaced first brackets each mounted on a respective one of said side walls of said housing, said first brackets being laterally aigned; 2. a shaft extending between and rotatably supported on said first brackets; 3. a second bracket mounted on the upper vane and movable therewith; and 4. an arm mounted on said shaft and movable therewith relative to said first brackets, said arm having said fusible portion connected thereto and extending therefrom and connected to said second bracket thereby retaining said vanes in a respective selected position; e. means mounted on said second vane and on said housing for retaining said vanes in the position closing the control opening after melting of said fusible portion, said means for retaining said vanes in said closing position after melting of said fusible portion including: 1. a stop member mounted on said housing adjacent the second vane; 2. a fusible link having opposite ends; 3. a first holder member mounted on said second vane and having the other end of said fusible link connected thereto; and 4. a second holder member mounted on said second vane and having the other end of said fusible link connected thereto, said second holder member being resilient and retained in a position to clear said stop member during movement of said second vane and moveable to a position in engagement with said stop member upon melting of said fusible link.
Claim 10
Dependent Claim
135 words
A control damper as set forth in claim 5 wherein: a. each of said plurality of vanes has axle portions extending from opposite ends thereof and each extending outwardly through a respective one of said side walls of said housing; and b. said means for retaining said vanes in the position closing said control opening after melting of said fusible portion includes: 1. a plurality of arms each mounted on and extending outwardly from respective one of said axle portions, said arms each being adjacent a respective one of the side walls of said housing; and 2. a connector link pivotally connected to each of said arms whereby movement of one of said vanes effects movement of all of said vanes and locking of one of said vanes effects locking of all of said vanes.
Claim 11
Dependent Claim
257 words
A control damper for a fluid conduit, said control damper comprising: a. a housing defining a control opening; b. at least one vane mounted in said housing and having opposed side portions and movable between a fluid flow permitting position and a position closing the control opening; c. resilient means operatively connected to said vane for urging same into the position closing the control opening; d. means mounted on said housing and connected to said vane for moving same between the flow permitting position and the position closing the control opening and having a fusible portion thereby allowing said resilient means to move said vane into the position closing said control opening in the event of temperature above the melting point of said fusible portion; e. means mounted on said vane and said housing for retaining said vane in the position closing the control opening after melting of said fusible portion, said means for retaining the vane in said closing position including: 1. a stop member mounted on said housing adjacent said vane; 2. a holder member mounted on said vane and having an end portion, said holder member being resilient; and 3. a fusible link having one end fixed relative to said vane and another end connected to said holder member adjacent said end portion for normally retaining said holder member in a position clear of said stop member during movement of the vane and releasing said holder member for movement to a position in engagement with said stop member upon melting of said fusible link.
Claim 12
Dependent Claim
257 words
A control damper for a fluid conduit, said control damper comprising: a. a housing defining a control opening; b. at least one vane mounted in said housing and having opposed side portions and movable between a fluid flow permitting position and a position closing the control opening; c. resilient means operatively connected to said vane for urging same into the position closing the control opening; d. means mounted on said housing and connected to said vane for moving same between the flow permitting position and the position closing the control opening and having a fusible portion thereby allowing said resilient means to move said vane into the position closing said control opening in the event of temperature above the melting point of said fusible portion; e. means mounted on said vane and said housing for retaining said vane in the position closing the control opening after melting of said fusible portion, said means for retaining the vane in said closing position including: 1. a stop member mounted on said housing adjacent said vane; 2. a holder member mounted on said vane and having an end portion, said holder member being resilient; and 3. a fusible link having one end fixed relative to said vane and another end connected to said holder member adjacent said end portion for normally retaining said holder member in a position clear of said stop member during movement of the vane and releasing said holder member for movement to a position in engagement with said stop member upon melting of said fusible link.
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) | 1979-12-14 | 1980-06-14 | 1980-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-14 | 1984-06-14 | 1984-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-14 | 1988-06-14 | 1988-12-14 | $7700.00 | Window Closed / Lapsed |