Patent US3628426A successfully refreshed from Google Patents.
US3628426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Devices for operating windows
Assignee: Individual
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Filing: 1970-02-16
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Granted: 1971-12-21
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Expires: 1990-02-16
Abstract
Abstract A rack and pinion device with cam designed to hold the rack in a selected position in combination with a piston and cylinder arrangement operated by movement of the rack for producing and controlling hydraulic pressure, and the complete drive system wherein said device is arranged to actuate the hydraulic circuits in sealing, moving or locking of casement windows.
Inventors
- 👤 Werner Frach
- 👤 Bernhard Janke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:58
CPC Classifications
E; E05; E05D; E05D15/00; E05D15/48; E05D15/52; E05F; E05F15/00; E05F15/50; F; F15; F15B; F15B7/00; F15B7/005; F15B7/06; F15B7/08; G; G05; G05G; G05G9/00; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/148; G05G2700/00; G05G2700/22; G05G2700/26; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18088; Y10T74/1812
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
113 words
A device for sealing, moving and like operations of a window, comprising: at least one piston and cylinder arrangement for hydraulic operation of the window; at least one rotatable pinion and displaceable rack releasably engaged with one another, the rack being firmly engaged with a moveable part of the piston and cylinder arrangement and bearing a counterstop; and a cam disc rotatable with the pinion to engage and disengage said counterstop so as to allow and release said engagement of the pinion and rack in different angular regions of the disc and pinion rotation, whereby the rack through the piston and cylinder arrangement alternately applies and releases a locking force to the window.
Claim 2
Independent Claim
113 words
A device for sealing, moving and like operations of a window, comprising: at least one piston and cylinder arrangement for hydraulic operation of the window; at least one rotatable pinion and displaceable rack releasably engaged with one another, the rack being firmly engaged with a moveable part of the piston and cylinder arrangement and bearing a counterstop; and a cam disc rotatable with the pinion to engage and disengage said counterstop so as to allow and release said engagement of the pinion and rack in different angular regions of the disc and pinion rotation, whereby the rack through the piston and cylinder arrangement alternately applies and releases a locking force to the window.
Claim 3
Dependent Claim
52 words
A device according to claim 1, which includes a plurality of piston and cylinder arrangements, and a plurality of associated pinion wheels and cam disks fixed on a common rotatable shaft, the cam disks associated with the different pinion wheels or racks being adapted to be staggered in relation to each other.
Claim 4
Dependent Claim
29 words
A device according To claim 2, wherein with two pistons and cylinder arrangements acting alternately the cam disks are arranged to be staggered by 180* relative to each other.
Claim 5
Dependent Claim
19 words
A device according to claim 3, wherein the racks are arranged to lie opposite in relation to the shaft.
Claim 6
Dependent Claim
31 words
A drive for hydraulic circuits in window constructions with a device according to claim 3, arranged in a housing, each of the two cylinders having connecting bores for the hydraulic pipes.
Claim 7
Dependent Claim
67 words
A drive according to claim 5, characterized in that at least a part of each connecting bore is provided in the end walls of the cylinders, and that the respective pistons have cylindrical projections on the front side, which in the extended position of the piston form a seal with corresponding recesses in the cylinder end wall, the recesses being connected to one or more connecting bores.
Claim 8
Dependent Claim
32 words
A drive according to claim 5, wherein the shaft with the pinion wheels and cam disks is provided with a handle or lever at right angles to the axis of the shaft.
Claim 9
Dependent Claim
18 words
A drive according to claim 5, wherein inside the housing there are provided guide parts for the racks.
Claim 10
Dependent Claim
48 words
A drive according to claim 5, wherein between each piston and end cylinder wall there are provided spring means which are arranged to operate in the extended position of the piston, said spring means acting in a direction opposite to that of the extending movement of the piston.
References Cited (Backward Citations)
US3433018A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |