US3843090A
Expired / Lapsed
US
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Damper
Assignee: Zimmermann and Jansen GmbH
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Filing: 1973-01-11
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Granted: 1974-10-22
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Expires: 1993-01-11
Abstract
Abstract A damper having a circular plate adapted to seal against an annular flange in a tubular housing; the plate being mounted for axial movement along the housing and for rotary movement about an axis that is transverse of the housing.
Inventors
- 👤 H Schneider
- 👤 J Becker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:14
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/24
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
233 words
A damper, comprising: a. a tubular housing having an intermediate internal annular seat, b. a damper plate mounted within the housing for swinging movement about a transverse shaft from a first position wherein its periphy engages the seat to a second position removed from the seat, c. an actuating lever connecting the plate to the shaft for providing pressure of the damper plate against the seat, d. guide means independent of the actuating lever for regulating the motion of the damper plate from the first position to the second position in such a way that the movement adjacent the first position is primarily transverse motion in the direction of a line at a right angle to the plane of the seat and in such a way that the part of the motion adjacent the second position is primarily swinging movement about an an axis spaced from and parallel to the said plane of the seat, wherein the length of the actuating lever (8, 37) of the damper plate (3, 30) is shortr than the radius of the plate and a hub (10, 38) of the shaft lies within the space enclosed by thE tubular housing (1, 28), and wherein the shaft (11, 39) of the actuating lever is guided on both sides in bearings (14, 18, 43, 44) that project outwardly of the housing and are mounted in the wall of the housing.
Claim 2
Dependent Claim
233 words
A damper, comprising: a. a tubular housing having an intermediate internal annular seat, b. a damper plate mounted within the housing for swinging movement about a transverse shaft from a first position wherein its periphy engages the seat to a second position removed from the seat, c. an actuating lever connecting the plate to the shaft for providing pressure of the damper plate against the seat, d. guide means independent of the actuating lever for regulating the motion of the damper plate from the first position to the second position in such a way that the movement adjacent the first position is primarily transverse motion in the direction of a line at a right angle to the plane of the seat and in such a way that the part of the motion adjacent the second position is primarily swinging movement about an an axis spaced from and parallel to the said plane of the seat, wherein the length of the actuating lever (8, 37) of the damper plate (3, 30) is shortr than the radius of the plate and a hub (10, 38) of the shaft lies within the space enclosed by thE tubular housing (1, 28), and wherein the shaft (11, 39) of the actuating lever is guided on both sides in bearings (14, 18, 43, 44) that project outwardly of the housing and are mounted in the wall of the housing.
Claim 3
Dependent Claim
32 words
A damper as recited in claim 1, characterized by the fact that the effective length of the actuating lever (8, 37) is less than half the radius of the damper-plate (3, 30).
Claim 4
Dependent Claim
42 words
A damper as recited in claim 2, characterized by the fact that the bearings (14, 18, 43, 44) at least in the zones intersecting the wall of the housing (1, 28) are parallelepipedal in shape and exhibit a square or rectangular cross-section.
Claim 5
Dependent Claim
40 words
A damper as recited in claim 3, characterized by the fact that there are two actuating levers (8, 37) in parallel with one another and are provided with separate hubs (10, 38) effecting the connection to the shaft (11, 39).
Claim 6
Dependent Claim
88 words
A damper as recited in claim 4, characterized by the fact that the guide means have projections which are connected with the damper-plate (30) in the zone of the bearing pedestal (5) for the pivot bolts (6) for engagement with the actuating levers (37) at an offset exceeding that of the pivot bolts from the damper-plate, and engage guide curves (47) in supporting members (blade 19) mounted fixedly in the housing (28) and projecting from the housing wall parallel to the plane of rotation of the actuating levers.
Claim 7
Dependent Claim
20 words
A damper as recited in claim 5, characterized by the fact that the extended bearing pedestals (37) have projections (35).
Claim 8
Dependent Claim
23 words
A damper as recited in claim 6, characterized by the fact that the bearing pedestals (32) bracket one projection bolt (35) between them.
Claim 9
Dependent Claim
21 words
A damper as recited in claim 7, characterized by the fact that a projection is formed as a stud bolt (35).
Claim 10
Dependent Claim
27 words
A damper as recited in claim 8, characterized by the fact that a supporting member formed as a blade (46) is arranged radially to the housing (28).
Claim 11
Dependent Claim
43 words
A damper as recited in claim 9, characterized by the fact that the projection bolt (35) is arranged in offset relationship to the axis of the symmetry of the damper-plate (30) in the direction of the shaft (39) of the actuating levers (37).
Claim 12
Dependent Claim
46 words
A damper as recited in claim 10, characterized by the fact that the guide curve (47) is formed in the shape of an arc of a circle and the circular arc exhibits a radius which is shorter than the effective length of the actuating levers (37).
Claim 13
Dependent Claim
46 words
A damper as recited in claim 11, characterized by the fact that the center (48) of the circular arc in the closed position of the damper-plate (30) has about the same offset from the damper-plate as the projection bolt (35) which engages the guide curve (47).
Claim 14
Dependent Claim
104 words
A damper as recited in claim 12, characterized by the fact that in the closed position of the damper-plate (30) the actuating levers (37) are inclined towards the damper-plate beyond the right angular line to the axis of the housing (28) passing through their shaft (39), and that the projection bolt (35) lies in a portion of the guide curve (47) which extends in the direction of the damper-plate (30) beyond the normal to the axis of the housing (28), which passes through the center (48) of the circular arc of the guide curve, at a small offset beyond the normal to the axis.
Claim 15
Dependent Claim
36 words
A damper as recited in claim 13, characterized by the fact that the damper-plate (30) has two bearing pedestals (32) which hold the projection bolt (35) between them and are provided with pivot-bolts (33) pointing outwardly.
Claim 16
Dependent Claim
92 words
A damper as recited in claim 4, characterized by the fact that the guide means is in the form of links (25) which are supported pivotally about bolts (26) in the housing, have a length less than that of the actuating levers (8), and are engaged centrally with support plates (23) connected to the damper plate (3) at an offset which exceeds that of the pivot Bolt (7) of the actuating lever, and that of the length of the links falls is less than 90 percent of that of the actuating levers.
Claim 17
Dependent Claim
33 words
A damper as recited in claim 15, characterized by the fact that the length of the links (25) falls is less than that of the actuating levers (8) by more than 30 percent.
Claim 18
Dependent Claim
48 words
A damper as recited in claim 16, characterized by the fact that in the closed position of the damper-plate (3) both the actuating levers (8) and the links (25) are inclined towards the damper-plate (3) beyond 90* to the axis of the housing (1), passing through their pivots.
Claim 19
Dependent Claim
37 words
A damper as recited in claim 17, characterized by the fact that in the closed position of the damper-plate (3) the actuating levers (8) and the links (25) lie in planes which are parallel with one another.
Claim 20
Dependent Claim
66 words
A damper as recited in claim 18, characterized by the fact that the damper-plate (3) is provided with at least three bearing pedestals (6, 23) of which one (6) is located centrally and carries pivot bolts (7) with their free ends pointing outwards, and the others (23) are arranged to be offset axially outwards and are provided with bolts (24) for engagement with the links (25).
Claim 21
Dependent Claim
24 words
A damper as recited in claim 19, characterized by the fact that the parallel actuating levers (8) bracket the bearing pedestal (6) between them.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |