US4357732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic door closer kit
Assignee: Individual
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Filing: 1979-12-10
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Granted: 1982-11-09
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Expires: 1999-12-10
Abstract
Abstract An automatic door closer kit for a sliding door assembly comprising a doorway frame having first and second vertical jambs which are horizontally spaced and an upper horizontal lintel connecting across the two jambs and having two downwardly extending parallel rails, wherein the doorway frame defines a vertical plane. A stationary panel is mounted within the plane adjacent the second jamb. A movable door, having an upper end, a lower end, first and second vertical sides, with the first side adjacent the first jamb when the movable door is closed, is received within the rails of the lintel and is slidably mounted within the plane of the doorway. The door closer kit is gravity actuated and comprises a counterbalance having an adjustable weight capacity, an anchor pulley mechanism having a grooved pulley wheel thereon and mounted on the lintel and one of the rails, a traveling pulley mechanism having a grooved pulley wheel thereon and mounted on the upper edge of the second side of the movable door, and a lifting pulley mechanism having a grooved pulley wheel thereon and mounted on an upper portion of the stationary panel adjacent the second jamb. A cord, having one end thereof attached to the counterbalance, is entrained over the lifting pulley then about the anchor pulley and about the traveling pulley and the other end thereof is secured to a hook on the anchor pulley mechanism.
Inventors
- 👤 David H. Hickman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:01
CPC Classifications
E; E05; E05F; E05F1/00; E05F1/02; E05F1/025; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
370 words
An automatic door closer kit for a sliding door assembly comprising a doorway having first and second vertical jambs, said jambs being horizontally spaced, an upper horizontal lintel connecting across said jambs and having two downwardly extending parallel rails, said doorway frame defining a vertical plane, a stationary panel mounted within said plane adjacent said second jamb, a movable rectangular door having an upper leaf, a lower leaf, first and second vertical stiles with said first stile being adjacent said first jamb when said movable door is in a closed position, the upper leaf of said movable door being received within said rails of said lintel so that said door is slidably mounted within said plane of said doorway frame; said door closer kit being gravity actuated and comprising; a counterbalance having an adjustable weight capacity, an anchor pulley mechanism including a first L-shaped base having a first outwardly extending post mounted on the inside of the L, a grooved anchor pulley wheel rotatably mounted on said first post, double-faced adhesive tape mounted on the outer surfaces of said first base for attachment of said first base to one of said rails and to said lintel, a traveling pulley mechanism including a second L-shaped base having a second outwardly extending post mounted on the outside of the L, a grooved traveling pulley wheel rotatably mounted on said second post, double-faced adhesive tape mounted on the inner surfaces of said second base for attachment of said second base to said second stile; a lifting pulley mechanism including a third base in the form of a four-sided box, a third post extending outwardly from the outer side surface of one of the sides of said box, a grooved lifting pulley wheel rotatably mounted on said third post, double-faced adhesive tape mounted on the outer surfaces of the other three sides of said third base for attachment of said third base to said second jamb, to said lintel and to said frame, and a cord having one end thereof attached to said counterbalance, said cord being entrained over said lifting pulley then about said anchor pulley and about said traveling pulley, the other end of said cord being secured to said first base.
Claim 2
Dependent Claim
370 words
An automatic door closer kit for a sliding door assembly comprising a doorway having first and second vertical jambs, said jambs being horizontally spaced, an upper horizontal lintel connecting across said jambs and having two downwardly extending parallel rails, said doorway frame defining a vertical plane, a stationary panel mounted within said plane adjacent said second jamb, a movable rectangular door having an upper leaf, a lower leaf, first and second vertical stiles with said first stile being adjacent said first jamb when said movable door is in a closed position, the upper leaf of said movable door being received within said rails of said lintel so that said door is slidably mounted within said plane of said doorway frame; said door closer kit being gravity actuated and comprising; a counterbalance having an adjustable weight capacity, an anchor pulley mechanism including a first L-shaped base having a first outwardly extending post mounted on the inside of the L, a grooved anchor pulley wheel rotatably mounted on said first post, double-faced adhesive tape mounted on the outer surfaces of said first base for attachment of said first base to one of said rails and to said lintel, a traveling pulley mechanism including a second L-shaped base having a second outwardly extending post mounted on the outside of the L, a grooved traveling pulley wheel rotatably mounted on said second post, double-faced adhesive tape mounted on the inner surfaces of said second base for attachment of said second base to said second stile; a lifting pulley mechanism including a third base in the form of a four-sided box, a third post extending outwardly from the outer side surface of one of the sides of said box, a grooved lifting pulley wheel rotatably mounted on said third post, double-faced adhesive tape mounted on the outer surfaces of the other three sides of said third base for attachment of said third base to said second jamb, to said lintel and to said frame, and a cord having one end thereof attached to said counterbalance, said cord being entrained over said lifting pulley then about said anchor pulley and about said traveling pulley, the other end of said cord being secured to said first base.
Claim 3
Dependent Claim
59 words
An automatic door closer kit as set forth in claim 1 wherein said counterbalance comprises a hollow cylinder having a sealed bottom, a weight affixed within said cylinder, and a sealable cap removably attached to the top of said cylinder wherein said cap is removed to place various materials within said cylinders for adjusting the weight of said counterbalance.
Claim 4
Dependent Claim
61 words
An automatic door closer kit as set forth in claim 1 including a disarming mechanism comprising a one piece nylon base, a center post being an integral part of said base wherein said door closer is disabled by removing the loop of said cord from about said traveling pulley and said loop being placed about said post of said disarming mechanism.
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) | 1985-11-08 | 1986-05-10 | 1986-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-08 | 1990-05-10 | 1990-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-08 | 1994-05-10 | 1994-11-09 | $7700.00 | Window Closed / Lapsed |