US4073527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically controlled door lock
Assignee: Schlage Lock Co LLC
•
Filing: 1977-01-12
•
Granted: 1978-02-14
•
Expires: 1997-01-12
Abstract
Abstract A door lock for use on a door panel has bores containing a lock mechanism including a chassis on which spindles are mounted for rotation about two parallel axes. Door handles or other lock operators are disposed on opposite ends of both spindles and are interconnected variously to operate a lock bolt and a latch bolt. The lock and latch bolts are also disposed in the bores and are joined to the chassis. One of the handles is joined to one of the spindles by a clutch including an axially movable member operated by an electromagnet within the bores, the electromagnet being connected to the clutch member by an actuator movable in a path having an axial component.
Inventors
- 👤 Ernest L. Schlage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:27
CPC Classifications
E; E05; E05B; E05B47/00; E05B47/06; E05B47/0676; E05B47/068; E05B2047/0048; E05B2047/0057; E05B2047/0059; E05B47/0001; E05B47/0002; E05B47/0003; E05B47/0004; Y; Y10; Y10S; Y10S292/00; Y10S292/27; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/1014; Y10T292/1021; Y10T292/82; Y10T292/85; Y10T292/865
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
121 words
An electrically controlled door lock for use in a door panel having a bore therein comprising a lock chassis adapted to be disposed on said door panel, a lock bolt adapted to be disposed on said door panel, a spindle on said chassis rotatable about an axis, means for connecting said spindle to operate said lock bolt, a door handle, means for mounting said door handle on said door panel for rotation about said axis, a clutch including a member adapted to engage and to disengage said handle and said spindle, an electromagnet frame in said bore, an electromagnet on said frame, an armature operable by said electromagnet, and means for interconnecting said armature and said clutch member for conjoint movement.
Claim 2
Dependent Claim
121 words
An electrically controlled door lock for use in a door panel having a bore therein comprising a lock chassis adapted to be disposed on said door panel, a lock bolt adapted to be disposed on said door panel, a spindle on said chassis rotatable about an axis, means for connecting said spindle to operate said lock bolt, a door handle, means for mounting said door handle on said door panel for rotation about said axis, a clutch including a member adapted to engage and to disengage said handle and said spindle, an electromagnet frame in said bore, an electromagnet on said frame, an armature operable by said electromagnet, and means for interconnecting said armature and said clutch member for conjoint movement.
Claim 3
Dependent Claim
27 words
A device as in claim 1 in which said member is slidable along said axis, and said interconnecting means is movable with a component along said axis.
Claim 4
Dependent Claim
27 words
A device as in claim 1 in which said panel has an interior side and an exterior side, and said door handle is on said exterior side.
Claim 5
Dependent Claim
25 words
A device as in claim 1 including a second door handle, and means for permanently connecting said second handle and said spindle for conjoint rotation.
Claim 6
Dependent Claim
25 words
A device as in claim 1 in which said electromagnet includes an annular coil and said electromagnet frame supports said coil coaxially with said axis.
Claim 7
Dependent Claim
26 words
A device as in claim 1 in which said bore is disposed at a right angle to said axis, and said electromagnet is in said bore.
Claim 8
Dependent Claim
26 words
A device as in claim 1 in which said interconnecting means is effective to engage said member with said handle only when said electromagnet is energized.
Claim 9
Dependent Claim
17 words
A device as in claim 1 including means for resiliently urging said member to disengage said handle.
Claim 10
Dependent Claim
34 words
A device as in claim 1 in which said clutch includes oppositely facing jaws axially movable relative to each other, and means for holding said jaws in relative polar positions for ready axial engagement.
Claim 11
Dependent Claim
30 words
A device as in claim 1 including a circuit connection for said electromagnet, and means for variously connecting said electromagnet in said circuit depending upon the position of said armature.
Claim 12
Dependent Claim
53 words
A device as in claim 1 including in said clutch members movable axially relatively to each other between a first position and a second position and engageable with each other in said first position with some rotary lost motion and engageable with each other in said second position without said rotary lost motion.
Claim 13
Dependent Claim
22 words
A device as in claim 1 in which said spindle is hollow, and said clutch member is substantially housed within said spindle.
Claim 14
Dependent Claim
49 words
An electrically controlled door lock comprising a lock chassis, a lock bolt movable relative to said chassis, a door handle rotatable relative to said chassis, means including a clutch for interconnecting said lock bolt and said door handle, and an electromagnet connected to said chassis for operating said clutch.
Claim 15
Dependent Claim
49 words
An electrically controlled door lock comprising a lock chassis, a lock bolt movable relative to said chassis, a door handle rotatable relative to said chassis, means including a clutch for interconnecting said lock bolt and said door handle, and an electromagnet connected to said chassis for operating said clutch.
Claim 16
Dependent Claim
16 words
A device as in claim 13 in which said clutch is operable solely by said electromagnet.
References Cited (Backward Citations)
US1743955A
Cited
US3360970A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-13 | 1981-08-15 | 1982-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-13 | 1985-08-15 | 1986-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-13 | 1989-08-15 | 1990-02-14 | $7700.00 | Window Closed / Lapsed |