Patent US3375388A successfully refreshed from Google Patents.
US4102005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door closer arm
Assignee: Schlage Lock Co LLC
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Filing: 1977-07-05
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Granted: 1978-07-25
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Expires: 1997-07-05
Abstract
Abstract A door closer and a connector are joined to a door panel and a door frame. The connector includes an arm and a restraining device such as a track or a link. The arm has an arm base fast on a shaft projecting from the closer for rotation about a first axis and has an arm extension at one end connected to the restraining device and at the other end pivoted to the arm base for rotation relative thereto about a second axis parallel to and spaced from the first axis. A shoulder on the arm base and an abutment on the arm extension come into contact in one position of relative rotation of the arm base and the arm extension. If desired, there may also be a locking device engaging both the arm base and the arm extension and precluding relative rotation therebetween about the second axis. Further, there may be a damping device such as a friction brake for partially inhibiting relative rotation about the second axis.
Inventors
- 👤 Raymond H. Schnarr
- 👤 John P. Jester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:14
CPC Classifications
E; E05; E05F; E05F3/00; E05F3/22; E05F3/221; E05F2003/228; E05Y; E05Y2201/00; E05Y2201/60; E05Y2201/622; E05Y2201/624; E05Y2800/00; E05Y2800/37; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
74 words
An arm for a door closer having a shaft adapted to rotate about a first axis comprising an arm base, means on said base engageable with said shaft for rotation therewith, an arm extension, means on said extension for engagement with a restraining device, means for connecting said arm extension and said arm base to each other for rotation relative to each other about a second axis, and means for limiting said relative rotation.
Claim 2
Dependent Claim
74 words
An arm for a door closer having a shaft adapted to rotate about a first axis comprising an arm base, means on said base engageable with said shaft for rotation therewith, an arm extension, means on said extension for engagement with a restraining device, means for connecting said arm extension and said arm base to each other for rotation relative to each other about a second axis, and means for limiting said relative rotation.
Claim 3
Dependent Claim
25 words
A device as in claim 1 in which said limiting means includes a shoulder on said arm base and an abutment on said arm extension.
Claim 4
Dependent Claim
24 words
A device as in claim 1 including means for locking said arm base and said arm extension against relative rotation about said second axis.
Claim 5
Dependent Claim
20 words
A device as in claim 1 in which said first axis and said second axis are parallel to each other.
Claim 6
Dependent Claim
25 words
A device as in claim 1 in which said means for limiting said relative rotation is effective in only one direction of said relative rotation.
Claim 7
Dependent Claim
13 words
A device as in claim 1 including means for damping said relative rotation.
Claim 8
Dependent Claim
15 words
A device as in claim 6 in which said damping means includes a friction brake.
Claim 9
Dependent Claim
49 words
A device as in claim 1 including means on said arm extension for engagement with a restraining device and in which said means for limiting relative rotation is effective when said first axis, said second axis, and said means for engagement are all substantially in the same straight line.
Claim 10
Dependent Claim
80 words
For use with a door closer having a shaft rotatable about a first axis, an arm base including a hub nonrotatably engageable with said shaft, an arm extension, means on said arm extension for connecting said arm extension to a mounting, a pivot engaging said arm base and said arm extension and disposed on a second axis separate from said first axis, and means for limiting relative movement of said arm base and said arm extension about said second axis.
Claim 11
Dependent Claim
80 words
For use with a door closer having a shaft rotatable about a first axis, an arm base including a hub nonrotatably engageable with said shaft, an arm extension, means on said arm extension for connecting said arm extension to a mounting, a pivot engaging said arm base and said arm extension and disposed on a second axis separate from said first axis, and means for limiting relative movement of said arm base and said arm extension about said second axis.
Claim 12
Dependent Claim
48 words
In combination, an arm base having a non-circular hole therein, a pivot on said arm base, an arm extension engaging said pivot, means for connecting said arm extension to a mounting, and means for limiting relative movement of said arm base and said arm extension about said pivot.
Claim 13
Dependent Claim
48 words
In combination, an arm base having a non-circular hole therein, a pivot on said arm base, an arm extension engaging said pivot, means for connecting said arm extension to a mounting, and means for limiting relative movement of said arm base and said arm extension about said pivot.
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) | 1981-07-24 | 1982-01-23 | 1982-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-24 | 1986-01-23 | 1986-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-24 | 1990-01-23 | 1990-07-25 | $7700.00 | Window Closed / Lapsed |