US3855827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetically-operated locking mechanisms
Assignee: MRT MAGNET REGELTECHNIK GmbH
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Filing: 1973-11-09
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Granted: 1974-12-24
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Expires: 1993-11-09
Abstract
Abstract Locking mechanisms include a rotatably mounted stop member movable by means of a magnetic key between a release position and a locking position. When the stop member is in the release position a control element can enter a recess in the stop member and release movement of a locking bolt is permitted. The locking bolt is movable transversely to the direction of movement of the control element and the control element includes a cam portion which cooperates with a cam surface so that, when the stop member is in its locking position, movement of the locking bolt is prevented by interaction of the cam portion and cam surface. When the stop member is moved into its release position so that the control element can enter the recess in the stop member, relative sliding movement of the cam portion and cam surface can be effected. In several forms an ancillary bolt is likewise controlled. The ancillary bolt may be released by remotely controlled means.
Inventors
- 👤 H Hallman
- 👤 B Perkut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:39
CPC Classifications
E; E05; E05B; E05B47/00; E05B47/0038; E05B47/0044; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5246; Y10T70/5296; Y10T70/5319; Y10T70/5341; Y10T70/70; Y10T70/7051; Y10T70/7057; Y10T70/7441; Y10T70/7446; Y10T70/7458; Y10T70/778; Y10T70/7791; Y10T70/7904; Y10T70/7915; Y10T70/7932
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
197 words
In a magnetically-operated locking mechanism which includes at least one rotatably-mounted stop member which can be moved by means of a magnetic key into a release position from a locking position into which it is biassed and a control element which in the release position can enter a recess in the stop member by relative movement between the stop member and the control element in a direction parallel to the axis of rotation of the stop member, the control element being held against movement in said direction in the locking position of the stop member, so as to control movement of a locking bolt, the improvement wherein the locking bolt is movable transversely to the direction of movement of the control element and the control element includes a cam portion which cooperates with a cam surface so that, in the locking position of the stop member, movement of the locking bolt is prevented by interaction of the cam portion and cam surface and that, in the release position, movement of the locking bolt is permitted and the control element enters the recess in the stop member upon relative sliding movement of the cam portion and cam surface.
Claim 2
Dependent Claim
197 words
In a magnetically-operated locking mechanism which includes at least one rotatably-mounted stop member which can be moved by means of a magnetic key into a release position from a locking position into which it is biassed and a control element which in the release position can enter a recess in the stop member by relative movement between the stop member and the control element in a direction parallel to the axis of rotation of the stop member, the control element being held against movement in said direction in the locking position of the stop member, so as to control movement of a locking bolt, the improvement wherein the locking bolt is movable transversely to the direction of movement of the control element and the control element includes a cam portion which cooperates with a cam surface so that, in the locking position of the stop member, movement of the locking bolt is prevented by interaction of the cam portion and cam surface and that, in the release position, movement of the locking bolt is permitted and the control element enters the recess in the stop member upon relative sliding movement of the cam portion and cam surface.
Claim 3
Dependent Claim
29 words
A locking mechanism according to claim 1, wherein the control element and the stop member are withiN the locking bolt and the cam surface is within the lock casing.
Claim 4
Dependent Claim
30 words
A locking mechanism according to claim 1, wherein a key support is formed in the locking bolt so that the locking bolt can be slid positively with the magnetic key.
Claim 5
Dependent Claim
37 words
A locking mechanism according to claim 1, wherein the cam portion comprises a conical head portion of the control element and the cam surface is provided by a correspondingly shaped recess in the wall of the casing.
Claim 6
Dependent Claim
47 words
A locking mechanism according to claim 3, wherein the key support is formed in a sliding member which is mounted in the locking bolt so as to slide against the action of a spring in a direction parallel to the direction of movement of the locking bolt.
Claim 7
Dependent Claim
35 words
A locking mechanism according to claim 3, wherein a second control element together with a stop member and key support associated therewith is provided so that two magnetic keys are required to operate the mechanism.
Claim 8
Dependent Claim
50 words
A locking mechanism according to claim 6, wherein the second control element is located in the locking bolt and the associated cam surface is formed in an ancillary bolt mounted so as to slide relative to the bolt in a direction parallel to the direction of movement of the bolt.
Claim 9
Dependent Claim
39 words
A locking mechanism according to claim 7, wherein means are provided whereby the ancillary bolt can be held in place by an electro-magnetic device to enable the lock to be operated remotely without use of the second magnetic key.
Claim 10
Dependent Claim
53 words
A locking mechanism according to claim 8, wherein the electro-magnet of the operating device is situated outside the lock casing, said operating device including a hook-shaped locking lever pivotal on energisation of the electro-magnet, which lever cooperates with a stop in the ancillary bolt when the locking mechanism is in its locked position.
Claim 11
Dependent Claim
52 words
A locking mechanism according to claim 9, wherein means are provided whereby the ancillary bolt can only be slid a limited distance relative to the locking bolt, which locking bolt is provided with a bevelled surface engaged by the locking lever upon relative sliding movement between the locking bolt and ancillary bolt.
Claim 12
Dependent Claim
26 words
A locking mechanism according to claim 8, wherein the electro-magnet of the operating device includes an armature for engagement in an opening of the ancillary bolt.
Claim 13
Dependent Claim
42 words
A locking mechanism according to claim 6, wherein one of the magnetic keys is provided with a groove for engagement with the wall of the lock casing to prevent withdrawal of the key when the locking mechanism is in its open condition.
Claim 14
Dependent Claim
84 words
A locking mechanism according to claim 6, wherein a locking sliding member is associated with the second control element and is retained by a spring in a position in which it prevents disengagement of the control element from the associated stop member, said locking sliding member being arranged so as to operate against a cooperative surface for movement thereof into a release position in which the control element can disengage from the stop member by movement through an opening in the locking sliding member.
Claim 15
Dependent Claim
33 words
A locking mechanism according to claim 1, wherein a electrical signalling device is provided for transmission of a signal to a centre point upon movement of the locking bolt in the opening direction.
Claim 16
Dependent Claim
37 words
A locking mechanism according to claim 1, wherein the control element comprises two parts of which the first part includes the cam portion and the second part is arranged to enter the recess of the stop member.
Claim 17
Dependent Claim
92 words
A locking mechanism according to claim 15, wherein a guiding member is provided which is movable in a direction at right angles to the direction of movement of the control element, said guiding member being formed with a hole for reception of the two parts of the control element in such way that, when the said second part enters the recess in the stop member, the second part of the control element disengages from the hole in the guiding member and becomes separated from the first part which remains in the hole.
Claim 18
Dependent Claim
53 words
A locking Mechanism according to claim 16, wherein a cam surface is formed in a cam body extending parallel to the guiding member, which cam body can be slid together with the guiding member in the locking position of the stop member into engagement with an abutment against the action of a spring.
Claim 19
Dependent Claim
30 words
A locking mechanism according to claim 17, wherein the guiding member and the cam body are movable in a direction parallel to the direction of movement of the locking bolt.
Claim 20
Dependent Claim
48 words
A locking mechanism according to claim 1, wherein the stop member and the control element are disposed in a cylinder which is mounted for rotation with the locking bolt, the cam surface being afforded by a surface of a recess formed in the wall of the cylindrical casing.
Claim 21
Dependent Claim
16 words
A locking mechansim according to claim 19, wherein at least two angularly spaced recesses are provided.
Claim 22
Dependent Claim
37 words
A locking mechanism according to claim 20, wherein two pairs of rotatable stop members are arranged symmetrically in a channel formed in the cylinder and a common control element is associated with each pair of stop members.
Claim 23
Dependent Claim
25 words
A locking mechanism according to claim 21, wherein the magnetic key includes two magnets which are magnetically coded by being magnetised on both sides simultaneously.
Claim 24
Dependent Claim
41 words
A locking mechanism according to claim 3, wherein the key support is formed in a closed wall of a lock casing and the control element is acted on by a spring so as to be movable relative to the lock casing.
Claim 25
Dependent Claim
21 words
A locking mechansim according to claim 23, wherein a common connection is provided between the control element and the locking bolt.
Claim 26
Dependent Claim
48 words
A locking mechansim according to claim 24, wherein the locking bolt includes a cam on an end portion thereof projecting from the lock casing, said cam being arranged to cooperate with a fixed stop by means of which the locking bolt is movable relative to the control element.
Claim 27
Dependent Claim
14 words
A locking mechanism according to claim 25, wherein the fixed stop comprises a pin.
Claim 28
Dependent Claim
14 words
A locking mechanism according to claim 3, wherein the key support comprises a pocket.
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) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |