US3789549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotatable locking supports for sashes of windows
Assignee: RODMAN IND Inc
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Filing: 1972-05-30
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Granted: 1974-02-05
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Expires: 1992-05-30
Abstract
Abstract A sliding, window-supporting assembly has a rotary locking member in a sliding, supporting block contained within a channel of each vertical weather strip. The circumferential surface of the rotary locking member has diametrical portions like a cylinder and alternate cutoff portions. The diameter of the locking member between the cylindrical portions is somewhat greater than the normal width between those sides of the channel that are perpendicular to the jamb of the window, and when the sash that is keyed to the rotary locking member is rotated to a horizontal position, the cylindrical edges press against the sides of the channel to deform small portions of the sides to hold the sliding, supporting assembly stationary. While the sash is vertical, the cutoff portions of the rotary locking member are adjacent the respective sides of the channel, and the sliding supporting block is free to slide for raising or lowering the sash. A flat spring with a screw adjustment cooperates with a pair of strips along respective sides of the sliding, supporting block to provide a controlled amount of constant friction.
Inventors
- 👤 J Yip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:43
CPC Classifications
E; E05; E05D; E05D13/00; E05D13/04; E05D13/08; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/148
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
397 words
A sliding, window-supporting assembly for supporting in a window frame a sash that can be tilted and removed, a weather strip and a sash balancing spring attached to the inner surface of each jamb of said window frame, each of said weather strips being generally rectangular in cross section and at least the sides of said weather strip perpendicular to said jamb being resilient such that they can be deformed by moderate force, the side of each of said weather strips farthest from its jamb having a central, longitudinal slot and the portion of the weather strip adjacent the slot contacting said sash; the window-supporting assembly comprising: a sliding supporting block contained between said resilient sides of each of said weather strips, the upper end of each of said sliding supporting blocks being attachEd to a respective one of said balancing springs, a generally cylindrical rotary locking member rotatably mounted in each of said sliding supporting blocks, each of said rotary locking members having an axially located hole aligned with said slot of the respective weather strip, a pivot pin protruding outwardly from each side of said sash, the axis of said pins being on the same horizontal line, the outer ends of each of said pins being inserted in said hole of a respective one of said rotary locking members, the pivot pins being keyed in said holes to cause said rotary locking members to be rotated in said sliding supporting block in response to rotation of said sash about said pins, each of said rotary locking members having a generally cylindrical locking surface with diameterically opposite cutoff portions and leaving diametrically opposite locking surfaces, said cutoff portions normally being adjacent respective ones of said resilient sides of said respective weather strip to provide a sliding fit of said sliding supporting block while said sash is in a normal vertical position, the diameter of said cylindrical locking surfaces being somewhat greater than the normal inside dimension between said resilient sides of said weather strip, said rotary locking member rotatable by said pivot pin in response to rotation of said sash from a vertical position to a horizontal position such that said cylindrical locking surfaces press outwardly on said resilient sides to cause deformation of the sides thereabout and thereby lock said respective supporting block to prevent its movement by a respective one of said balancing springs.
Claim 2
Dependent Claim
397 words
A sliding, window-supporting assembly for supporting in a window frame a sash that can be tilted and removed, a weather strip and a sash balancing spring attached to the inner surface of each jamb of said window frame, each of said weather strips being generally rectangular in cross section and at least the sides of said weather strip perpendicular to said jamb being resilient such that they can be deformed by moderate force, the side of each of said weather strips farthest from its jamb having a central, longitudinal slot and the portion of the weather strip adjacent the slot contacting said sash; the window-supporting assembly comprising: a sliding supporting block contained between said resilient sides of each of said weather strips, the upper end of each of said sliding supporting blocks being attachEd to a respective one of said balancing springs, a generally cylindrical rotary locking member rotatably mounted in each of said sliding supporting blocks, each of said rotary locking members having an axially located hole aligned with said slot of the respective weather strip, a pivot pin protruding outwardly from each side of said sash, the axis of said pins being on the same horizontal line, the outer ends of each of said pins being inserted in said hole of a respective one of said rotary locking members, the pivot pins being keyed in said holes to cause said rotary locking members to be rotated in said sliding supporting block in response to rotation of said sash about said pins, each of said rotary locking members having a generally cylindrical locking surface with diameterically opposite cutoff portions and leaving diametrically opposite locking surfaces, said cutoff portions normally being adjacent respective ones of said resilient sides of said respective weather strip to provide a sliding fit of said sliding supporting block while said sash is in a normal vertical position, the diameter of said cylindrical locking surfaces being somewhat greater than the normal inside dimension between said resilient sides of said weather strip, said rotary locking member rotatable by said pivot pin in response to rotation of said sash from a vertical position to a horizontal position such that said cylindrical locking surfaces press outwardly on said resilient sides to cause deformation of the sides thereabout and thereby lock said respective supporting block to prevent its movement by a respective one of said balancing springs.
Claim 3
Dependent Claim
173 words
A sliding, window-supporting assembly as claimed in claim 1 wherein said hole in each of said rotary locking members and said outer end of each of said pivot pins are oblong in cross section, the longer dimension being vertical while said sash is horizontal, said rotary locking member having a notch extending in the direction of said longer dimension from said oblong hole to one of said cutoff portions thereof, the outer end of each of said pivot pins when rotated so that its longer cross section dimension is aligned vertically adapted to pass through a respective one of said slots of said weather strip, and through a respective one of said notches while it is aligned vertically into said oblong hole of said respective rotary locking member, said oblong outer end of each of said pins having its longer cross-sectional dimension greater than the width of said slot of said weather strip such that it is held captive within said weather strip while said sash is rotated substantially from its vertical position.
Claim 4
Dependent Claim
49 words
A sliding, window-supporting assembly as claimed in claim 2 wherein said rotary locking member is plastic with moderate resiliency and has arcuate sections cut out between said keying hole and said cylindrical locking surfaces to provide compression between said locking surfaces in response to application of excessive inward force.
Claim 5
Dependent Claim
161 words
A sliding, window-supporting assembly as claimed in claim 1 having in each of said sliding supporting blocks a spring tension adjustment to provide a desired constant amount of frictional resistance between said sliding support-ing block and said resilient sides of said respective weather strip, each of said sliding supporting blocks being made of moderately resilient plastic with a rectangular portion extending below said rotary locking member, said lower extending member having a pair of parallel slots, each spaced a short distance from each side of said lower extending portion to form a pair of opposite narrow strips along the sides thereof, said spring tension adjustment comprising a flat spring curved over the surface of said lower extending portion that faces said slot of said weather strip, the ends of said spring being turned into respective ones of said slots within said lower portion and an adjustment screw passing perpendicularly through the center of said flat spring into said lower portion. >
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) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |