Patent US3913263A successfully refreshed from Google Patents.
US3913263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking and unlocking mechanism for hinged doors
Assignee: Fidelity Bank NA
•
Filing: 1974-05-23
•
Granted: 1975-10-21
•
Expires: 1994-05-23
Abstract
Abstract A locking and unlocking mechanism to secure a hinged door has three control positions of the controlling mechanism. In the electrical control condition the door may be opened either by an operator at a remote position or individually from within the closed room or from the outside of the closed room. The hinged door is spring loaded so that when the control mechanism is in either electrical or release control position the door may be biased open. A deadlock control position insures that the opening mechanism is prevented from moving so as to secure the door in the locked position. Direct operational links connect the control mechanism with the securing mechanism.
Inventors
- 👤 Gerald L Butt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:34
CPC Classifications
E; E05; E05B; E05B65/00; E05B65/0017; Y; Y10; Y10S; Y10S292/00; Y10S292/72; Y10T; Y10T70/00; Y10T70/60; Y10T70/625; Y10T70/65
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
166 words
A locking and unlocking mechanism for locking and unlocking a hinged door comprising in combination: a door hingedly supported at one end; a bar being positionable relative to the other end of said door to provide locking and unlocking conditions; lock means on said door cooperating with said bar in the locking condition; bias means for forcing said door open in the unlocked condition; securing means operatively connected with said bar to move said bar from the locked condition to the unlocked condition; control means having three operating control positions; link means connecting said control means with said securing means wherein movement of said control means to the respective control positions respectively positions said securing means whereby two control positions provide for unlocking and opening of said door; and support rail means mounted independent of said door and movable transverse to said bar when said door is open, wherein said rail means is moved to said bar in the unlocked condition when the door is open.
Claim 2
Dependent Claim
166 words
A locking and unlocking mechanism for locking and unlocking a hinged door comprising in combination: a door hingedly supported at one end; a bar being positionable relative to the other end of said door to provide locking and unlocking conditions; lock means on said door cooperating with said bar in the locking condition; bias means for forcing said door open in the unlocked condition; securing means operatively connected with said bar to move said bar from the locked condition to the unlocked condition; control means having three operating control positions; link means connecting said control means with said securing means wherein movement of said control means to the respective control positions respectively positions said securing means whereby two control positions provide for unlocking and opening of said door; and support rail means mounted independent of said door and movable transverse to said bar when said door is open, wherein said rail means is moved to said bar in the unlocked condition when the door is open.
Claim 3
Dependent Claim
72 words
The mechanism as set forth in claim 1 further comprising a striker rod axially mounted relative to said support rail, driving means acting on said striker rod to urge said rod and said support rail in a direction transverse to said bar, and holding means operatively connecting said support rail with said hinged door wherein said holding means prevents movement of said support rail when said door is in the closed position.
Claim 4
Dependent Claim
106 words
The mechanism as set forth in claim 2 in which said holding means comprises a bell crank, said bell crank having a projecting lip from one end thereof, link means pivotally connecting said bell crank other end with said support rail, and a plate secured to said door wherein said plate will rotatably pivot with the opening and closing of said door, one end of said plate engaging said bell crank lip to prevent pivoting movement of said bell crank when said door is in the closed position and wherein opening of said door will pivot said lip so as to be disengaged from said lip.
Claim 5
Dependent Claim
27 words
The mechanism as set forth in claim 2 in which said drive means is a spring, and in which said bias means comprises a spring actuated plunger.
Claim 6
Dependent Claim
94 words
The mechanism as set forth in claim 4 in which said spring actuated plunger is mounted in a housing adjacent the other end of said door and transverse thereto, said door further comprising a lug mounted to said door and projecting inwardly therefrom, said lug being engageable with saId spring actuated plunger wherein said lug places said spring actuated plunger under a load when said door is in the closed position whereby the force of the said spring actuated plunger will force said door open when said bar is positioned in the unlocked condition.
Claim 7
Dependent Claim
38 words
The mechanism as set forth in claim 5 in which said lug is formed with a bar receiving notch therein wherein one end of said bar will engage said notch when said door is in the closed position.
Claim 8
Dependent Claim
153 words
The mechanism as set forth in claim 3 further comprising electric drive means operatively connected with said securing means to permit electric drive operation of said securing means when said control means is in the electric control position, electrical circuit connected between said electric drive means and a source of power, a first control switch operatively connected with said electric drive means wherein actuation of said first switch by a guard at a control switch completes the circuit for said electric drive means thereby causing said door to be opened, a second switch mounted within the interior of the cell and electrically connected with said electric drive means, and an electric key switch mounted on the exterior of the cell enclosure and electrically connected by said electric drive means, said second switch and key switch permitting individual inmate opening of respective cell doors when said control mechanism is in the electric control position.
Claim 9
Dependent Claim
48 words
The mechanism as set forth in claim 7 in which movement of said control means to a deadlock control position moves said link means to cooperatively engage and deadlock said securing means to prevent said securing means from mechanically and electrically moving said bar to the unlocked condition.
Claim 10
Dependent Claim
33 words
The mechanism as set forth in claim 8 in which movement of said control means to a third control position simultaneously causes said securing means to move said bar to the unlocked condition.
Claim 11
Dependent Claim
103 words
The mechanism as set forth in claim 2 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, 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 12
Dependent Claim
67 words
The mechanism as set forth in claim 10 in which said cam includes a substantially U-shaped end portion and an inclined portion wherein movement of said control means to the deadlock 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 13
Dependent Claim
84 words
The mechanism as set forth in claim 11 in which movement of said control means to the electric control position moves said master bar relative to said roller to position said roller out of said U-shaped portion wherein said electric drive means is free to raise 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 14
Dependent Claim
47 words
The mechanism as set forth in claim 12 in which movement of said control means to a third 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 15
Dependent Claim
110 words
The mechanism as set forth in claim 13 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, a limit switch responsive to said cam plate for interrupting operation of said motor when said bar has moved to the unlocked condition, and 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 segment with said pendulum.
Claim 16
Dependent Claim
48 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 control position.
References Cited (Backward Citations)
US2417167A
Cited
US3837117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |