Patent US3753316A successfully refreshed from Google Patents.
US3753316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door lock with automatic and emergency control system
Assignee: R Alkan et Cie
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Filing: 1971-08-25
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Granted: 1973-08-21
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Expires: 1991-08-25
Abstract
Abstract The door locking device according to this invention is characterized in that it comprises a guiding sleeve disposed within the locker or like box and having slidably mounted therein a piston responsive to an electromagnet or a fluid pressure so as to actuate with its lateral surface at least one lateral locking member movable in said locker and adapted to co-act with a retaining member rigid with the door so as to lock or release this door according as said piston is in its front or back position in said sleeve.
Inventors
- 👤 H Savarieau
- 👤 G Bourrie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:13
CPC Classifications
E; E05; E05B; E05B47/00; E05B47/06; E05B47/0603; E05B47/0607; E05B63/00; E05B63/12; E05B63/121; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/082; Y10T292/0822; Y10T292/0824; Y10T292/0876; Y10T292/0883; Y10T292/096; Y10T292/1014; Y10T292/1021; Y10T292/1043; Y10T292/1075; Y10T292/1082; Y10T292/62
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
171 words
Device for locking the door of a locker comprising a guiding sleeve, rigid with the inner part of said locker, piston slideably positioned in said sleeve, remote control means for actuating said piston, hollow retaining means rigid with the inner face of the locker door and adapted, in the closed position of the door, to axially surround the end of said sleeve, at least one lateral locking member disposed within said sleeve and adapted to co-act with the lateral surface of said piston in order either to engage said retaining means thus ensuring the locking of the door, or to disengage said retaining means and allow the opening of the door, according as said piston is in a front or back position respectively, the locker door presenting in axial alignment with the piston axis an aperture allowing to impart to the piston, from the external face of the door in locked position, a manual pushing against the resistance of a relatively weak spring to permit an emergency release of the device.
Claim 2
Dependent Claim
171 words
Device for locking the door of a locker comprising a guiding sleeve, rigid with the inner part of said locker, piston slideably positioned in said sleeve, remote control means for actuating said piston, hollow retaining means rigid with the inner face of the locker door and adapted, in the closed position of the door, to axially surround the end of said sleeve, at least one lateral locking member disposed within said sleeve and adapted to co-act with the lateral surface of said piston in order either to engage said retaining means thus ensuring the locking of the door, or to disengage said retaining means and allow the opening of the door, according as said piston is in a front or back position respectively, the locker door presenting in axial alignment with the piston axis an aperture allowing to impart to the piston, from the external face of the door in locked position, a manual pushing against the resistance of a relatively weak spring to permit an emergency release of the device.
Claim 3
Dependent Claim
17 words
Device as claimed in claim 1, wherein the remote control means actuating said piston is an electromagnet.
Claim 4
Dependent Claim
18 words
Device as claimed in claim 1, wherein the remote control means actuating said piston is a fluid pressure.
Claim 5
Dependent Claim
26 words
Device according to claim 1, characterized in that locking members are provided which consist of balls forming a ring in openings formed in said guiding sleeve.
Claim 6
Dependent Claim
30 words
Device according to claim 1, characterized in that said locking members are housed in lateral notches formed in said guiding sleeve on which said members are supported through spring blades.
Claim 7
Dependent Claim
69 words
An application of the device described in claim 3, in the specific case of the automatic control of the doors of individual lockErs provided on board airliners and containing oxygen masks, characterized in that said piston is moved backwards for releasing the locking system by energizing an electromagnet coil automatically through an aneroid capsule or bellows adapted to detect a predetermined reduction in the air pressure within the aircraft.
Claim 8
Dependent Claim
126 words
Device according to claim 1 with auxiliary or emergency manual control means for opening the door, characterized in that said retaining means rigid with the door consists of a recess adapted to receive said locking piston and formed on the side adjacent to the opening edge of the door which is opposite to the hinged side, a lateral aperture extending towards said door beyond the piston end in the front position thereof to permit the introduction, between said piston and said door, of the end of a special curved rod inserted in the slit formed between the door and its frame and through the lateral aperture of said recess solid with the door, so that the piston can be pushed axially inwards to open the door.
Claim 9
Dependent Claim
93 words
Locking device for a container door, of the automatic control type, acting by axial movement of a spring-loaded piston and provided with a manual emergency control means, characterized in that it comprises an olive-shaped stud coaxial with said piston and mounted on the inner surface of said door, a pawl, pivot pin connected to the container and positioned parallel to the plane of said door and said pawl being pivotally supported by said pin and normally held in the stud retaining position by holding the piston in its position nearest to said stud.
Claim 10
Dependent Claim
93 words
Locking device for a container door, of the automatic control type, acting by axial movement of a spring-loaded piston and provided with a manual emergency control means, characterized in that it comprises an olive-shaped stud coaxial with said piston and mounted on the inner surface of said door, a pawl, pivot pin connected to the container and positioned parallel to the plane of said door and said pawl being pivotally supported by said pin and normally held in the stud retaining position by holding the piston in its position nearest to said stud.
Claim 11
Dependent Claim
34 words
Device according to claim 8, characterized in that said piston constitutes the plunger core of an electromagnet adapted to release the door when the electromagnet winding is energized with a suitable electrical control voltage.
Claim 12
Dependent Claim
32 words
Device according to claim 8, characterized in that members connected to the container are enclosed in a protection case acting as a support and consisting of a pair of moulded plastic half-shells.
Claim 13
Dependent Claim
45 words
Device according to claim 10, characterized in that the support of said locking mechanism is mounted to the fixed portion of the structure equipped with the door adapted to be locked, by means of button-holes permitting the proper adjustment of the position of said support.
Claim 14
Dependent Claim
21 words
Device according to claim 8, characterized in that it further comprises a spring urging said pawl to its stud retaining position.
Claim 15
Dependent Claim
53 words
Device according to claim 8, characterized in that said olive-shaped stud is provided with an integral base flange adapted to be retained in a socket secured to the inner surface of the door and to oscillate slightly by causing the distortion of a resilient washer interposed between said base flange and said door.
Claim 16
Dependent Claim
59 words
Device according to claim 8, characterized in that said olive-shaped stud has formed therethrough an axial passage registering with a hole formed through the door, whereby said piston can be pushed back to its release position by introducing a metal rod through said door hole and stud passage, in case of failure of the automatic door opening control system.
Claim 17
Dependent Claim
40 words
Device according to claim 14, characterized in that it comprises between said olive-shaped stud and said door a shutter-like member adapted, in one position, to close the hole formed through the door for the passage of the emergency control rod.
Claim 18
Dependent Claim
85 words
Device according to claim 8, characterized in that said fixed structure carries in the vicinity of the door frame and opposite to the door hinge a sliding member formed with a head registering with the end of the locking piston for controlling the backward movement of said piston and adapted to be pushed back in turn by means of a rod formed with a slightly bent end portion which is inserted for the manual opening manoeuver through the slit formed between the door and frame.
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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) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |