Patent US4044812A successfully refreshed from Google Patents.
US4044812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remotely operated window shutters
Assignee: Individual
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Filing: 1976-03-05
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Granted: 1977-08-30
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Expires: 1996-03-05
Abstract
Abstract An articulated window shutter which can be remotely opened to a fully opened position wherein both shutter elements are parallel to the wall of the structure in which the shuttered aperture is located and wherein the shutter operating elements are fully enclosed in the structure wall.
Inventors
- 👤 Paul W. Swanstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:43
CPC Classifications
E; E05; E05D; E05D15/00; E05D15/26; E05D15/264; E05F; E05F11/00; E05F11/36; E05Y; E05Y2800/00; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132; E05Y2900/146
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
342 words
A remotely operated folding shutter system for covering or uncovering an aperture in a building wall, comprising, in combination: a first rectangular shutter panel pivotally mounted about a vertical axis with a first vertical edge adjacent to an edge of the aperture to be covered; a second rectangular shutter panel having a width slightly greater than the width of said first shutter panel pivotally connected along one vertical edge to said first panel with one vertical edge of said second shutter panel aligned adjacent to the second vertical edge of said first shutter panel; track means mounted above and below said aperture in said building wall; slide means mounted for slidable movement along said track along a straight path substantially parallel to said building wall; guide means connected at one end to the other vertical edge of said second rectangular shutter panel and pivotally connected at the other end to said slide means; a worm mounted on a rotatable shaft which projects through said wall; a worm gear mounted on a frame for rotation about a substantially vertical axis, said worm gear being engaged with said worm to rotate about said vertical axis when said worm is rotated about its shaft axis; a drive arm having one end fixed to said worm gear for rotation of said drive arm when said worm gear is rotated about said vertical axis; a connecting link pivotally connected at one end to the free end of said drive arm and pivotally connected at its other end to an extension of said shutter; a first cam block attached to said link, said cam block having a cam surface; a mating cam block attached to said frame with cam surface cooperative with the cam surface of said first cam block, said cam surface operative when said shutter is perpendicular to said wall to limit the angular rotation of said link to within approximately 20 degrees of perpendicular, thereby to prevent a relative reversal of the direction of rotation of said shutter relative to rotation of said rotatable shaft.
Claim 2
Dependent Claim
342 words
A remotely operated folding shutter system for covering or uncovering an aperture in a building wall, comprising, in combination: a first rectangular shutter panel pivotally mounted about a vertical axis with a first vertical edge adjacent to an edge of the aperture to be covered; a second rectangular shutter panel having a width slightly greater than the width of said first shutter panel pivotally connected along one vertical edge to said first panel with one vertical edge of said second shutter panel aligned adjacent to the second vertical edge of said first shutter panel; track means mounted above and below said aperture in said building wall; slide means mounted for slidable movement along said track along a straight path substantially parallel to said building wall; guide means connected at one end to the other vertical edge of said second rectangular shutter panel and pivotally connected at the other end to said slide means; a worm mounted on a rotatable shaft which projects through said wall; a worm gear mounted on a frame for rotation about a substantially vertical axis, said worm gear being engaged with said worm to rotate about said vertical axis when said worm is rotated about its shaft axis; a drive arm having one end fixed to said worm gear for rotation of said drive arm when said worm gear is rotated about said vertical axis; a connecting link pivotally connected at one end to the free end of said drive arm and pivotally connected at its other end to an extension of said shutter; a first cam block attached to said link, said cam block having a cam surface; a mating cam block attached to said frame with cam surface cooperative with the cam surface of said first cam block, said cam surface operative when said shutter is perpendicular to said wall to limit the angular rotation of said link to within approximately 20 degrees of perpendicular, thereby to prevent a relative reversal of the direction of rotation of said shutter relative to rotation of said rotatable shaft.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-29 | 1981-02-28 | 1981-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-29 | 1985-02-28 | 1985-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-29 | 1989-02-28 | 1989-08-30 | $7700.00 | Window Closed / Lapsed |