Patent US4081880A successfully refreshed from Google Patents.
US4081880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lower guide for horizontally sliding door
Assignee: National Manufacturing Co
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Filing: 1976-11-10
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Granted: 1978-04-04
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Expires: 1996-11-10
Abstract
Abstract A sliding door is suspended from a top rail for movement across a doorway and is guided at the bottom by a J-shaped rail mounted to the side of the building adjacent the doorway and extending upwardly into a downwardly opening channel provided along the bottom of the door.
Inventors
- 👤 James A. Edeus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:14
CPC Classifications
E; E05; E05F; E05F5/00; E05F5/003; E05D; E05D15/00; E05D15/06; E05D15/0621; E05D15/0626; E05D15/0656; E05Y; E05Y2201/00; E05Y2201/60; E05Y2201/622; E05Y2201/684; E05Y2600/00; E05Y2600/40; E05Y2600/45; E05Y2600/46; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
63 words
A lower guide for a pair of biparting sliding doors, comprising a member having a mounting plate portion adapted to be secured to a supporting surface said member having an upstanding flange the upper end portion of said flange being bent over to provide a laterally extending lip, and a stop extending laterally from said member adjacent said flange and below said lip.
Claim 2
Dependent Claim
63 words
A lower guide for a pair of biparting sliding doors, comprising a member having a mounting plate portion adapted to be secured to a supporting surface said member having an upstanding flange the upper end portion of said flange being bent over to provide a laterally extending lip, and a stop extending laterally from said member adjacent said flange and below said lip.
Claim 3
Dependent Claim
19 words
A lower guide according to claim 1 wherein said stop is a bent over, integral portion of said member.
Claim 4
Dependent Claim
19 words
A lower guide according to claim 2 wherein said lip extends downwardly toward the plane of said plate portion.
Claim 5
Dependent Claim
19 words
A lower guide according to claim 3 wherein said flange extends upwardly from one edge of said plate portion.
Claim 6
Dependent Claim
163 words
In combination with a structure having an opening in a vertical side thereof, a door having a downwardly opening channel extending along the bottom thereof, said channel having first and second spaced apart coplanar horizontal reentrant flanges with a pair of vertical lips extending upwardly from the inner edges of said reentrant flanges, an elongated guide rail having a horizontal base flange, a vertical flange extending upwardly from one horizontal edge of said base flange, and an upper horizontal flange extending from the upper edge of said vertical flange in substantial parallelism with said base flange, a plurality of spaced apart bracket means secured to said structure and to said base flange for mounting said guide rail to said structure to one side of said opening, and said upper horizontal flange and an upper portion of said vertical flange being disposed within said channel with said upper horizontal flange overlying one of said lips to limit lateral and upward movement of said door.
Claim 7
Dependent Claim
163 words
In combination with a structure having an opening in a vertical side thereof, a door having a downwardly opening channel extending along the bottom thereof, said channel having first and second spaced apart coplanar horizontal reentrant flanges with a pair of vertical lips extending upwardly from the inner edges of said reentrant flanges, an elongated guide rail having a horizontal base flange, a vertical flange extending upwardly from one horizontal edge of said base flange, and an upper horizontal flange extending from the upper edge of said vertical flange in substantial parallelism with said base flange, a plurality of spaced apart bracket means secured to said structure and to said base flange for mounting said guide rail to said structure to one side of said opening, and said upper horizontal flange and an upper portion of said vertical flange being disposed within said channel with said upper horizontal flange overlying one of said lips to limit lateral and upward movement of said door.
Claim 8
Dependent Claim
70 words
The combination according to claim 5 wherein said bracket means each have a horizontally extending flange provided with an elongated slot extending perpendicularly to the path of movement of said door, said guide resting on said horizontally extending flanges, and a plurality of fastener means extending through the respective slots in said bracket means for fastening said rail to said horizontally extending flanges at an adjustable distance from said structure.
Claim 9
Dependent Claim
19 words
The combination according to claim 5 wherein said upper horizontal flange extends toward said structure from said vertical flange.
Claim 10
Dependent Claim
24 words
The combination according to claim 7 wherein the width of said upper horizontal flange is substantially less than the width of said base flange.
References Cited (Backward Citations)
US854789A
Cited
US2023873A
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US2893069A
Cited
US2980969A
Cited
US3345677A
Cited
US3534431A
Cited
US3855732A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-03 | 1981-10-03 | 1982-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-03 | 1985-10-03 | 1986-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-03 | 1989-10-03 | 1990-04-04 | $7700.00 | Window Closed / Lapsed |