US3681727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetically operable blocking and control device
Assignee: MRT MAGNET REGELTECHNIK GmbH
•
Filing: 1970-07-21
•
Granted: 1972-08-01
•
Expires: 1990-07-21
Abstract
Abstract A magnetically operable blocking and control device, in which at least one of two permanent magnet means arranged in a housing has at least a portion movable selectively toward and away from the other permanent magnet means while third magnet means is selectively movable into and out of the magnetic field of one of said first mentioned two permanent magnet means for controlling the same.
Inventors
- 👤 Hermann Hallmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:14
CPC Classifications
E; E05; E05B; E05B47/00; E05B47/0038; E05B47/004; E05B47/0042; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7051; Y10T70/7057
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
250 words
A magnetically operable blocking and control device which includes: first carrier means reciprocable from a first position to a second position and vice versa, guiding means reciprocably guiding said first carrier means, second carrier means pivotally supported by said first carrier means and adapted to be pivoted relative to said first carrier means between a blocking position and an unblocking position, said second carrier means including a latching member, locking means operable to lock said latching member when said first carrier means is in said second position and said second carrier means is in said blocking position, first and second permanent magnet means carried by said second carrier means and respectively arranged on opposite sides of and symmetrically with regard to the pivot axis of said first carrier means, third permanent magnet means carried by said first carrier means and arranged opposite said second permanent magnet means, fourth permanent magnet means selectively reciprocable in said first carrier means opposite said first permanent magnet means, said third and fourth permanent magnet means having the same field intensity as the respective oppositely located second and first permanent magnet means and having such a polarity with regard to the polarity of said second and first permanent magnet means as to hold said second and first permanent magnet means and thereby said second carrier means balanced in said unblocking position by said third and fourth permanent magnet means, and spring means continuously biasing said first and second carrier means away from said locking means.
Claim 2
Dependent Claim
250 words
A magnetically operable blocking and control device which includes: first carrier means reciprocable from a first position to a second position and vice versa, guiding means reciprocably guiding said first carrier means, second carrier means pivotally supported by said first carrier means and adapted to be pivoted relative to said first carrier means between a blocking position and an unblocking position, said second carrier means including a latching member, locking means operable to lock said latching member when said first carrier means is in said second position and said second carrier means is in said blocking position, first and second permanent magnet means carried by said second carrier means and respectively arranged on opposite sides of and symmetrically with regard to the pivot axis of said first carrier means, third permanent magnet means carried by said first carrier means and arranged opposite said second permanent magnet means, fourth permanent magnet means selectively reciprocable in said first carrier means opposite said first permanent magnet means, said third and fourth permanent magnet means having the same field intensity as the respective oppositely located second and first permanent magnet means and having such a polarity with regard to the polarity of said second and first permanent magnet means as to hold said second and first permanent magnet means and thereby said second carrier means balanced in said unblocking position by said third and fourth permanent magnet means, and spring means continuously biasing said first and second carrier means away from said locking means.
Claim 3
Dependent Claim
64 words
A device according to claim 1, in which said guiding means includes housing means having a bottom at one end and being open at the opposite end and slidingly engaging said first carrier means, and in which said spring means includes a helical preloaded pressure spring having one end resting against said bottom and having its opposite end resting against said first carrier means.
Claim 4
Dependent Claim
47 words
A device according to claim 1, in which said first carrier means has a chamber opposite and closed toward said first permanent magnet means and being open in opposite direction and in which said fourth permanent magnet means is selectively movable into and out of said chamber.
Claim 5
Dependent Claim
93 words
A device according to claim 1, in which said second carrier means includes a rocker having two arms arranged on opposite sides of the pivot axis of said rocker with said first and second permanent magnet means respectively connected to said arms, and in which said latching member includes an anchor member fixedly connected to said rocker and operable when said fourth permanent magnet means is withdrawn from said first carrier means to be moved by the action of said second and third permanent magnet means into locking engagement with said locking means.
Claim 6
Dependent Claim
64 words
A device according to claim 2, in which the bottom of said housing means is provided with a passage for permitting said latching means to pass therethrough while said fourth permanent magnet means has been received by said first carrier means and magnetically acts upon said first permanent magnet means and while said second and third permanent magnet means magnetically act upon each other.
Claim 7
Dependent Claim
23 words
A device according to claim 5, in which the housing portion directly defining said passage includes a flanged portion forming said locking means.
Claim 8
Dependent Claim
98 words
A magnetically operable blocking and control device, which includes: housing means, first permanent magnet means arranged in said housing means, second permanent magnet means arranged in said housing means and having at least a portion selectively movable toward and away from said first permanent magnet means, and third permanent magnet means movable selectively into and out of the magnetic field of said second permanent magnet means for controlling the same relative to said first magnet means, said first and second permanent magnet means being of the same polarity with the poles of the same polarity facing each other.
Claim 9
Dependent Claim
98 words
A magnetically operable blocking and control device, which includes: housing means, first permanent magnet means arranged in said housing means, second permanent magnet means arranged in said housing means and having at least a portion selectively movable toward and away from said first permanent magnet means, and third permanent magnet means movable selectively into and out of the magnetic field of said second permanent magnet means for controlling the same relative to said first magnet means, said first and second permanent magnet means being of the same polarity with the poles of the same polarity facing each other.
Claim 10
Dependent Claim
190 words
A magnetically operable blocking and control device which includes: housing means, first permanent magnet means arranged in said housing means, second permanent magnet means arranged in said housing means and having at least a portion selectively movable toward and away from said first permanent magnet means, and third permanent magnet means movable selectively into and out of the magnetic field of said second permanent magnet means for controlling the same, said first and second permanent magnet means being of the same polarity with the poles of the same polarity facing each other, and said housing means including first chamber means having said first and second permanent magnet means arranged therein in spaced relationship to each other and selectively so that said second permanent magnet means is outside the magnetic field of said first magnetic means, said housing means also including second chamber means adapted selectively to receive said third permanent magnet means, said third permanent magnet means being movable in said second chamber means selectively into and out of the magnetic field of said said second permanent magnet means to thereby control the position of said second permanent magnet means.
Claim 11
Dependent Claim
190 words
A magnetically operable blocking and control device which includes: housing means, first permanent magnet means arranged in said housing means, second permanent magnet means arranged in said housing means and having at least a portion selectively movable toward and away from said first permanent magnet means, and third permanent magnet means movable selectively into and out of the magnetic field of said second permanent magnet means for controlling the same, said first and second permanent magnet means being of the same polarity with the poles of the same polarity facing each other, and said housing means including first chamber means having said first and second permanent magnet means arranged therein in spaced relationship to each other and selectively so that said second permanent magnet means is outside the magnetic field of said first magnetic means, said housing means also including second chamber means adapted selectively to receive said third permanent magnet means, said third permanent magnet means being movable in said second chamber means selectively into and out of the magnetic field of said said second permanent magnet means to thereby control the position of said second permanent magnet means.
Claim 12
Dependent Claim
54 words
A device according to claim 8, in which said housing means includes passage means, and blocking means movable into said housing means for maintaining said second permanent magnet means in a position spaced from the adjacent wall of said second housing means and intermediate said last mentioned wall and said first permanent magnet means.
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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |