Patent US3837117A successfully refreshed from Google Patents.
US3837117A
Expired / Lapsed
US
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Locking and unlocking mechanism
Assignee: Fidelity Bank NA
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Filing: 1972-11-02
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Granted: 1974-09-24
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Expires: 1992-11-02
Abstract
Abstract A locking and unlocking mechanism to secure a door has four control positions of the controlling mechanism. Two positions of the control mechanism place the securing mechanism in a deadlock condition. Direct operational links connect the control mechanism with the securing mechanism.
Inventors
- 👤 G Butt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:09
CPC Classifications
E; E05; E05B; E05B65/00; E05B65/0017
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
128 words
A mechanism for locking and unlocking a door comprising: a bar being positionable relative to the door to provide locking and unlocking conditions; securing means operatively connected with said bar to move said bar from the locked condition to the unlocked condition; control means having four operating control positions, two of the control positions resulting in a positional deadlock for sad bar and securing means; and link means operatively connecting said control means with said securing wherein movement of said bar to the unlocked condition is dependent on the operating position of said control means whereby positioning said control means in each of two operating positions operatively places said bar and securing mechanism in a deadlock position to prevent manual movement of said bar to the unlocked condition.
Claim 2
Dependent Claim
128 words
A mechanism for locking and unlocking a door comprising: a bar being positionable relative to the door to provide locking and unlocking conditions; securing means operatively connected with said bar to move said bar from the locked condition to the unlocked condition; control means having four operating control positions, two of the control positions resulting in a positional deadlock for sad bar and securing means; and link means operatively connecting said control means with said securing wherein movement of said bar to the unlocked condition is dependent on the operating position of said control means whereby positioning said control means in each of two operating positions operatively places said bar and securing mechanism in a deadlock position to prevent manual movement of said bar to the unlocked condition.
Claim 3
Dependent Claim
45 words
The mechanism as set forth in claim 1 further comprising travel means operatively carried by the door and movable therewith, said travel means preventing opening of the door in the locked condition and holding said bar in the unlocked condition when the door is open.
Claim 4
Dependent Claim
113 words
The mechanism as set forth in claim 1 in which movement of said control means to a first positional deadlock control position moves said link means to cooperatively engage and deadlock said securing means to prevent said securing means from moving said bar to the unlocked condition; and further comprising electric drive means operatively connected with said securing means to permit electrode drive operation of said securing means to move said bar to the unlocked condition when said control means is in the second positonal deadlock control position; and switch means responsive to said control means to prevent actuation of said electric drive means in any control position except the second control position.
Claim 5
Dependent Claim
55 words
The mechanism as set forth in claim 3 further comprising hand-operated link means connected with said securing means to permit manual operation of said securing means when said control means is in a third control position wherein actuation of said hand-operated link means causes said securing means to move said bar to the unlocked condition.
Claim 6
Dependent Claim
33 words
The mechanism as set forth in claim 4 in which movement of said control means to a fourth control position simultaneously causes said securing means to move said bar to the unlocked condition.
Claim 7
Dependent Claim
67 words
The mechanism as set forth in claim 1 in which said securing means further comprises a bar extension member operatively connected at one end with said bar, said bar being moved in response to movement of said bar extension member, a roller rotatably mounted adjacent the other end of said extension member, said roller coacting with said link means in response to movement of said control means.
Claim 8
Dependent Claim
65 words
The mechanism as set forth in claim 6 in which said link means comprise a master bar mounted for movement normal to said bar extension member, said master bar being connected with said control means, and further comprising a cam fixedly secured to said master bar, said cam coacting with said roller wherein relative movement occurs therebetween in response to movement of said control means.
Claim 9
Dependent Claim
22 words
The mechanism as set forth in claim 7 in which said cam includes a substantially U-shaped end portion and an inclined portion.
Claim 10
Dependent Claim
54 words
The mechanism as set forth in claim 8 in which movement of said control means to a first control position moves said master bar relative to said roller to relatively position said roller in the U-shaped portion of said cam to positionally deadlock said bar extension from moving said bar to the unlocked condition.
Claim 11
Dependent Claim
89 words
The mechanism as set forth in claim 9 in which movement of said control means to a second control position moves said master bar relative to said roller to position said roller out of said U-shaped portion and further comprising electric drive means operatively connected with said bar extension to move said bar extension upon actuation of said drive means and switch means responsive to said control means to prevent actuation of said drive means when said control means is in any control position except the second control position.
Claim 12
Dependent Claim
56 words
The mechanism as set forth in claim 10 further comprising hand-operated link means connected with said bar extension roller for movement of said bar extension member when said control means is in a third control position wherein actuation of said hand-operated link means causes said bar extension member to move said bar to the unlocked condition.
Claim 13
Dependent Claim
47 words
The mechanism as set forth in claim 11 in which movement of said control means to a fourth control position moves said master bar relative to said bar extension member to drive said roller up said cam inclined portion thereby moving said bar to the unlocked condition.
Claim 14
Dependent Claim
72 words
The mechanism as set forth in claim 12 in which said electric drive means includes an electric motor, a cam plate rotationally driven by said motor, said cam plate engaging said roller to cam said roller during part of the rotational movement of said cam plate, and further comprising a limit switch responsive to said cam plate for interrupting operation of said motor when said bar has moved to the unlocked condition.
Claim 15
Dependent Claim
49 words
The mechanism as set forth in claim 13 further comprising a pendulum pivotally mounted at its center portion on said bar extension member, and in which said cam plate includes a pendulum engaging segment wherein a deadlock condition exists during engagement of said cam plate segments with said pendulum.
Claim 16
Dependent Claim
50 words
The mechanism as set forth in claim 14 further comprising a tripper arm secured to said master bar, said arm being engageable with said pendulum to pivot said pendulum out of engagement with said cam plate segment during movement of said control means to the third and fourth control positions.
Claim 17
Dependent Claim
65 words
The mechanism as set forth in claim 15 further comprising a roller rotationally secured to said bar, a travel rail carried by the door and movable therewith, said rail having a bar roller receiving portion to receive said bar roller in the bar locked condition and wherein said bar roller engages the top surface of said rail in rolling contact in the bar unlocked condition.
Claim 18
Dependent Claim
80 words
The mechanism as set forth in claim 16 in which said control means comprises a handle moveable to the four control positions, an actuator bar, gear means operatively connecting said handle with said actuator bar wherein movement of said handle to a control position causes a movement of said actuator arm, and wherein said actuator bar is pivotally connected with said master bar whereby movement of said actuator arm causes relative movement between said master bar and bar extension roller.
Claim 19
Dependent Claim
48 words
The mechanism as set forth in claim 17 in which said actuator bar is formed with a groove thereon, said groove cooperating with said switch means when said handle is in the second control position thereby allowing said switch to close to permit actuation of said electric motor.
Claim 20
Dependent Claim
75 words
The mechanism as set forth in claim 18 in which said hand-operated link means comprises a pivotally mounted door, a rod connected with said door, a link arm operatively connected with said rod at one end, a pivotally mounted bell crank connecting the other end of said link arm with said bar extension roller wherein pivotal movement of said door causes movement of said bar extension roller to move said bar to the unlocked condition.
Claim 21
Dependent Claim
39 words
The mechanism as set forth in claim 19 further comprising a door guide secured to the door and movable therewith, said guide being formed with a bar receiving slot therein for receipt of said bar in the locked condition.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |