Patent US3635511A successfully refreshed from Google Patents.
US3635511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latching assembly with magnetic locking
Assignee: Consolidated Controls Corp
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Filing: 1969-11-05
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Granted: 1972-01-18
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Expires: 1989-11-05
Abstract
Abstract A latching assembly for a door swingable toward and away from a doorjamb or the like between a closed and an open position, comprising a pair of mechanically cooperating latch members mounted on the door and jamb, respectively, and relatively movable between an engaged latching position and a disengaged unlatched position. The latch members have latching surfaces adapted for engaged contact in a first direction generally transversely of the direction of movement of an adjacent portion of said door relative to the doorjamb. Permanent magnet holding means is provided for normally locking said latch members in latched contact, and electromagnetic means is provided for producing a magnetic force with a polarity opposing that of said permanent magnet means to unlock and relatively move the latch members out of latched engagement thereby permitting the door to be opened.
Inventors
- 👤 Henry A Waller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:19
CPC Classifications
B; B64; B64D; B64D11/00; B64D11/06; B64D11/0627; B64D11/0629; B64D11/0632; E; E05; E05B; E05B47/00; E05B47/0001; E05B47/0002; E05B47/0006; E05C; E05C19/00; E05C19/16; B64D2231/00; B64D2231/02; B64D2231/025; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/1043; Y10T292/1062; Y10T292/1075; Y10T292/1082; Y10T292/11
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
101 words
A latching assembly for a door swingable toward and away from a doorjamb, said latching assembly comprising a pair of mechanically engageable latch members mounted on said door and jamb, respectively, and movable relatively between an engaged mechanically latched position and a disengaged unlatched position, permanent magnet means for holding at least one of said latch members in mechanically latched engagement with the other, and electromagnet means having a polarity while energized opposing said permanent magnet means for overcoming the holding force thereof permitting relative movement of said latch members to said unlatched position so that said door can be opened.
Claim 2
Dependent Claim
101 words
A latching assembly for a door swingable toward and away from a doorjamb, said latching assembly comprising a pair of mechanically engageable latch members mounted on said door and jamb, respectively, and movable relatively between an engaged mechanically latched position and a disengaged unlatched position, permanent magnet means for holding at least one of said latch members in mechanically latched engagement with the other, and electromagnet means having a polarity while energized opposing said permanent magnet means for overcoming the holding force thereof permitting relative movement of said latch members to said unlatched position so that said door can be opened.
Claim 3
Dependent Claim
33 words
The latch assembly of claim 1 wherein said latch members include engaging latch surfaces extending generally normal to the direction of movement of said door toward and toward and away from said doorjamb.
Claim 4
Dependent Claim
36 words
The latch assembly of claim 1 wherein said holding force exerted by said permanent magnet means extends in a direction generally normal to the direction of movement of said door toward and away from said doorjamb.
Claim 5
Dependent Claim
56 words
The latch assembly of claim 1 wherein one of said latch members is mounted for pivotal movement relative to the other and including spring means for biasing said pivotally mounted latch member out of said latching position to said unlatched position while the holding force of said permanent magnet means is overcome by said electromagnet means.
Claim 6
Dependent Claim
17 words
The latch assembly of claim 4 wherein said pivotally mOunted latch member is supported on said door.
Claim 7
Dependent Claim
26 words
The latch assembly of claim 4 wherein said pivotally mounted latch member is balanced so that the sum of moments about its pivot axis equals zero.
Claim 8
Dependent Claim
57 words
The latch assembly of claim 1 in combination with a door having window means therein, said latch assembly including indicator means movable to a position viewable through said window means from outside said door when said latch members are in said unlatched position and hidden from view when said latch members are engaged in said latched position.
Claim 9
Dependent Claim
32 words
The latch assembly of claim 7 wherein said indicator means is mounted on one of said latching members and said one latching member is mounted for pivotal movement relative to the other.
Claim 10
Dependent Claim
53 words
The latch assembly of claim 4 in combination with a door having window means therein, said pivotally mounted latch member including arm means extended outwardly of the pivot axis for engagement by a tool inserted through said window to pivotally move said latch members to said latched position engaging the other latch member.
Claim 11
Dependent Claim
133 words
A latching assembly for a door swingable toward and away from a doorjamb, said latching assembly comprising a pair of latch members mounted on said door and jamb, respectively, and relatively movable between a mechanically engaged, latching position and a disengaged unlatched position, said latch members having latching surfaces engageable in a first direction generally transversely of the direction of movement of said door toward and away from said doorjamb, permanent magnet means and magnetic pole means normally magnetically attracted together for holding said latch members in said engaged latching position, and electromagnetic means for magnetizing said pole means with a polarity opposing that of said permanent magnet means to repel the same and thereby relatively move one of said latch members into said disengaged unlatched position permitting said door to be opened.
Claim 12
Dependent Claim
133 words
A latching assembly for a door swingable toward and away from a doorjamb, said latching assembly comprising a pair of latch members mounted on said door and jamb, respectively, and relatively movable between a mechanically engaged, latching position and a disengaged unlatched position, said latch members having latching surfaces engageable in a first direction generally transversely of the direction of movement of said door toward and away from said doorjamb, permanent magnet means and magnetic pole means normally magnetically attracted together for holding said latch members in said engaged latching position, and electromagnetic means for magnetizing said pole means with a polarity opposing that of said permanent magnet means to repel the same and thereby relatively move one of said latch members into said disengaged unlatched position permitting said door to be opened.
Claim 13
Dependent Claim
59 words
The latching assembly of claim 10 wherein one of said latch members is mounted for pivotal movement relative to the other between said latched and said unlatched position while said door is closed, and biasing means normally urging said pivotally mounted latch member toward said unlatched position in opposition to the holding force exerted by said permanent magnet means.
Claim 14
Dependent Claim
37 words
The latching assembly of claim 11 wherein the force exerted by said electromagnet means while energized is active to pivot said pivotally mounted latch member in the same direction said member is urged by said bias means.
Claim 15
Dependent Claim
36 words
The latch assembly of claim 10 wherein holding attraction between said permanent magnet means and said pole means is in a direction generally normal to the direction of movement of said door away from said doorjamb.
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) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |