US4004372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sliding door closer and method and apparatus for installing the same
Assignee: DOORMAID Inc
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Filing: 1975-04-14
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Granted: 1977-01-25
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Expires: 1995-04-14
Abstract
Abstract This is a closer for sliding doors which includes a coil spring and a cushioning element in combination therewith and is specifically constructed to facilitate attaching the same to a sliding door and the invention also includes the method and apparatus for attaching the closer.
Inventors
- 👤 Wallace F. Beard
- 👤 Jack H. Poppler
- 👤 Loren C. Kienlen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:44
CPC Classifications
E; E05; E05F; E05F1/00; E05F1/08; E05F1/16; E05F5/00; E05F5/003; E05D; E05D13/00; E05D13/10; E05D13/12; E05D13/1276; E05Y; E05Y2201/00; E05Y2201/40; E05Y2201/404; E05Y2201/41; E05Y2201/47; E05Y2201/482; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
273 words
A cushioned door closer for a sliding door having top and bottom edges and a pair of vertical edges, one an overlapping edge and the other an abutting edge and mounted in an upper channel having a horizontal top portion spaced above the top of the door and provided with depending guide flanges which capture the upper edge portion of the door, said door closer comprising, a closer housing with a pivot shaft therewithin attached to the upper portion of the overlapping edge of the sliding door, a coil return spring having the coil thereof journalled on said shaft and enclosed within said housing and having a free end attachable to the horizontal top portion of the channel member in substantially concealed relation above the upper edge of the door between the depending guide flange of the channel, means for cushioning the door during the final stages of movement under the force exerted by said return spring and including an extensible rod member with means for limiting the speed of retraction thereof, a rod extending member mounted on said door for moving said rod into extended position whenever the door is moved into open position, a magnet attached to one of said members and a ferrous metal magnet-engaging portion mounted on the other member in alignment with said magnet for engagement therewith to pull the extensive member into fully extended position, and stop means for limiting the extending movement of the extensible member and the two members separating when the extensible member has been pulled into fully extended position against said stop means and thereafter the door is moved further into open position.
Claim 2
Dependent Claim
273 words
A cushioned door closer for a sliding door having top and bottom edges and a pair of vertical edges, one an overlapping edge and the other an abutting edge and mounted in an upper channel having a horizontal top portion spaced above the top of the door and provided with depending guide flanges which capture the upper edge portion of the door, said door closer comprising, a closer housing with a pivot shaft therewithin attached to the upper portion of the overlapping edge of the sliding door, a coil return spring having the coil thereof journalled on said shaft and enclosed within said housing and having a free end attachable to the horizontal top portion of the channel member in substantially concealed relation above the upper edge of the door between the depending guide flange of the channel, means for cushioning the door during the final stages of movement under the force exerted by said return spring and including an extensible rod member with means for limiting the speed of retraction thereof, a rod extending member mounted on said door for moving said rod into extended position whenever the door is moved into open position, a magnet attached to one of said members and a ferrous metal magnet-engaging portion mounted on the other member in alignment with said magnet for engagement therewith to pull the extensive member into fully extended position, and stop means for limiting the extending movement of the extensible member and the two members separating when the extensible member has been pulled into fully extended position against said stop means and thereafter the door is moved further into open position.
Claim 3
Independent Claim
94 words
The method of installing a sliding door closer comprising connecting the spring and closer housing to an exposed edge of a sliding door, attaching a stiff tool member to the free end of the spring, attaching the other end of said tool member to the portion of the frame above said door at a point exposed beyond the said edge of the door, sliding said door into fully open position to expose the free end of said spring element, and attaching said free end of the spring to the upper portion of the frame.
Claim 4
Independent Claim
94 words
The method of installing a sliding door closer comprising connecting the spring and closer housing to an exposed edge of a sliding door, attaching a stiff tool member to the free end of the spring, attaching the other end of said tool member to the portion of the frame above said door at a point exposed beyond the said edge of the door, sliding said door into fully open position to expose the free end of said spring element, and attaching said free end of the spring to the upper portion of the frame.
Claim 5
Dependent Claim
37 words
The method set forth in claim 2 and moving said door back into closed position to expose the end of said tool, and removing the tool from the frame and from the free end of the spring.
Claim 6
Dependent Claim
172 words
A sliding door closer in combination with a tool for installing the same comprising, a housing attached to an exposed vertical edge portion of a sliding door, a coil spring door closer element having the coiled portion thereof mounted within the housing and having a free attachment end portion with attaching apertures therein, a stiff installing tool attached at one end of the frame above the door, the other end of said tool having a hook thereon attached in overlying relation to the free end of the spring element through one of said apertures, said tool being of sufficient length to expose an end portion thereof beyond the exposed edge of said door to permit easy attachment of the tool to the upper frame portion, whereby said tool anchors the free end of said spring element when the door is moved into open position to expose the free end beyond the other vertical edge of said door to provide access for attaching the free end of the spring to the door frame.
Claim 7
Dependent Claim
172 words
A sliding door closer in combination with a tool for installing the same comprising, a housing attached to an exposed vertical edge portion of a sliding door, a coil spring door closer element having the coiled portion thereof mounted within the housing and having a free attachment end portion with attaching apertures therein, a stiff installing tool attached at one end of the frame above the door, the other end of said tool having a hook thereon attached in overlying relation to the free end of the spring element through one of said apertures, said tool being of sufficient length to expose an end portion thereof beyond the exposed edge of said door to permit easy attachment of the tool to the upper frame portion, whereby said tool anchors the free end of said spring element when the door is moved into open position to expose the free end beyond the other vertical edge of said door to provide access for attaching the free end of the spring to the door frame.
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) | 1980-01-25 | 1980-07-26 | 1981-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-25 | 1984-07-26 | 1985-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-25 | 1988-07-26 | 1989-01-25 | $7700.00 | Window Closed / Lapsed |