Patent US3792556A successfully refreshed from Google Patents.
US3792556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roof covering
Assignee: CGM Inc
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Filing: 1971-09-24
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Granted: 1974-02-19
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Expires: 1991-09-24
Abstract
Abstract In a roof covering of the hatch or vent type having a spring loaded cover, an improved arrangement is provided for absorbing the shock of the springs when opening the cover and also for locking the cover in an open position to preclude it from being blown shut from the wind.
Inventors
- 👤 J Anghinetti
- 👤 P Couture
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:56
CPC Classifications
E; E05; E05F; E05F3/00; E05F3/22; E04; E04D; E04D13/00; E04D13/03; E04D13/035; E04D13/0351; E04D13/0354; E05C; E05C17/00; E05C17/02; E05C17/04; E05C17/30; E05F1/00; E05F1/08; E05F1/10; E05F1/12; E05F1/123; F; F24; F24F; F24F7/00; F24F7/02; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/148; E05Y2900/152; F24F11/00; F24F11/30; F24F11/32; F24F11/33; F24F11/34
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
230 words
A roof covering construction comprising: side walls defining a curb and forming an enclosed well; a cover hinged to one of said side walls along a hinge line substantially along one of said side walls; means for biasing said cover toward an open position; a shock absorber having an elongate cylinder adapted to contain a fluid, a piston slidably disposed within said cylinder and a piston rod extending axially outwardly of one end of said cylinder; means pivotally connecting the head end of said cylinder to said curb for pivotal movement about a transverse axis; means pivotally connecting the outwardly extending end of said piston rod to said cover; and means for locking said cover in an open position comprising a locking bar pivoted at one end to said cover, the other end of said locking bar extending forwardly and paralleling generally said cylinder, the other end of said locking bar being adapted to rest on said cylinder and to slide therealong as said cover is opened, said locking bar being of a length so that the free end thereof may ride over the rod end of said cylinder and onto the extended piston rod thereof when said cover is in an open position whereby the free end of said locking bar thereafter may bear against the rod end of said cylinder, to lock said cover in said open position.
Claim 2
Dependent Claim
230 words
A roof covering construction comprising: side walls defining a curb and forming an enclosed well; a cover hinged to one of said side walls along a hinge line substantially along one of said side walls; means for biasing said cover toward an open position; a shock absorber having an elongate cylinder adapted to contain a fluid, a piston slidably disposed within said cylinder and a piston rod extending axially outwardly of one end of said cylinder; means pivotally connecting the head end of said cylinder to said curb for pivotal movement about a transverse axis; means pivotally connecting the outwardly extending end of said piston rod to said cover; and means for locking said cover in an open position comprising a locking bar pivoted at one end to said cover, the other end of said locking bar extending forwardly and paralleling generally said cylinder, the other end of said locking bar being adapted to rest on said cylinder and to slide therealong as said cover is opened, said locking bar being of a length so that the free end thereof may ride over the rod end of said cylinder and onto the extended piston rod thereof when said cover is in an open position whereby the free end of said locking bar thereafter may bear against the rod end of said cylinder, to lock said cover in said open position.
Claim 3
Dependent Claim
52 words
A roof coverIng construction as defined in claim 1 further comprising: means mounting said pivoted end of said locking bar and the pivoted end of said piston rod to the same pivot whereby said locking bar may be drawn along said cylinder simultaneously and in unison with extension of said piston rod.
Claim 4
Dependent Claim
80 words
A roof covering construction as defined in claim 2 wherein said locking bar comprises: an elongate rigid structural member of angled cross-sectional configuration defined by a pair of elongate flanges; said locking bar being connected to said pivot at one of said flanges, the other of said flanges being disposed over and in alignment with the longitudinal axis of said cylinder and piston rod whereby said other flange may bear against said cylinder and piston rod and be supported thereby.
Claim 5
Dependent Claim
36 words
A roof covering construction as defined in claim 3 further comprising: a bearing pad secured to the rod end of said cylinder and adapted to bear the load of said free end of said locking bar.
References Cited (Backward Citations)
US1512837A
Cited
US2896583A
Cited
US3032806A
Cited
US3135555A
Cited
US3516210A
Cited
US3516197A
Cited
US3601437A
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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) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |