US3796452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switch assembly for electric strike
Assignee: Von Duprin LLC
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Filing: 1972-05-22
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Granted: 1974-03-12
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Expires: 1992-05-22
Abstract
Abstract An improvement upon the disclosure of U. S. Pat. No. 3,640,560 which includes the provision of a switch assembly which may be integrated and wired in the open and may then be readily slipped into a compartment in a frame which supports the parts of the electrically-controlled strike mechanism of that patent to provide automatic control of signals or other electricallyactuated devices related to the operation of the patented strike mechanism.
Inventors
- 👤 J Foster
- 👤 L Hunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:22
CPC Classifications
E; E05; E05B; E05B47/00; E05B47/0046; E05B47/0047; Y; Y10; Y10T; Y10T292/00; Y10T292/68; Y10T292/696; Y10T292/699
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
207 words
In combination, a frame formed to provide a compartment and having an opening through an edge and an opening through a contiguous side into said compartment, a floor opposite one of said openings, guide means substantially parallel with and adjacent said floor, a switch assembly comprising a bracket formed to provide a base having opposed, parallel edges slidably receivable in said guide means and a block upstanding from said base, an electrical switch secured to one upstanding face of said block, said switch including an outwardly-biased actuator, trunnion means supported by said block and traversing said switch, a lever oscillably journalled on said trunnion means and overlying said actuator for cooperation therewith, and strike means including a strike lip mounted for oscillation, stop means for holding said strike lip against movement in one direction, electrically-energized means for retracting said stop means, trigger means mounted for oscillation, said strike lip and said trigger means having portions exposed outside said frame for interposition of a latch bolt therebetween and having portions reaching into said compartment through said one opening with said last-named portion of said trigger means arranged for cooperation with said lever, upon withdrawal of said latch bolt from such interposition, to move said actuator against its bias.
Claim 2
Dependent Claim
207 words
In combination, a frame formed to provide a compartment and having an opening through an edge and an opening through a contiguous side into said compartment, a floor opposite one of said openings, guide means substantially parallel with and adjacent said floor, a switch assembly comprising a bracket formed to provide a base having opposed, parallel edges slidably receivable in said guide means and a block upstanding from said base, an electrical switch secured to one upstanding face of said block, said switch including an outwardly-biased actuator, trunnion means supported by said block and traversing said switch, a lever oscillably journalled on said trunnion means and overlying said actuator for cooperation therewith, and strike means including a strike lip mounted for oscillation, stop means for holding said strike lip against movement in one direction, electrically-energized means for retracting said stop means, trigger means mounted for oscillation, said strike lip and said trigger means having portions exposed outside said frame for interposition of a latch bolt therebetween and having portions reaching into said compartment through said one opening with said last-named portion of said trigger means arranged for cooperation with said lever, upon withdrawal of said latch bolt from such interposition, to move said actuator against its bias.
Claim 3
Dependent Claim
44 words
The combination of claim 1 in which the guide means opens through the other of said frame openings, whereby said switch assembly may be entered into, or removed from, said compartment while said strike lip and trigger portions are in place in said compartment.
Claim 4
Dependent Claim
26 words
The combination of claim 2 including stop means in said compartment remote from said other opening to limit movement of said switch assembly into said compartment.
Claim 5
Dependent Claim
31 words
The combination of claim 1 in which said floor is formed with a slot opening through the other of said frame openings for accommodation of wires connected to said switch assembly.
Claim 6
Dependent Claim
62 words
The combination of claim 1 in which said block is substantially mid-way between said parallel edges of said base, a similar switch is secured to the opposite upstanding face of said block, said trunnion means traverses also said similar switch and a second lever is oscillably journalled on said trunnion means to overlie the actuator of said similar switch for cooperation therewith.
Claim 7
Dependent Claim
50 words
The combination of claim 1 including a further lever having opposite arms, and means operatively connecting one of said arms to said electrically-energized means, the other of said arms being arranged to move said first-named lever, upon energization of said electrically-energized means, to move said switch actuator against its bias.
Claim 8
Dependent Claim
155 words
In combination, a frame formed to provide a compartment and having an opening through an edge and an opening through a contiguous side into said compartment, a floor opposite one of said openings, guide means substantially parallel with and adjacent said floor, a switch assembly comprising a bracket formed to provide a base having opposed, parallel edges slidably receivable in said guide means and a block upstanding from said base, an electrical switch secured to one upstanding face of said block, said switch including an outwardly-biased actuator, trunnion means supported by said block and traversing said switch, a lever oscillably journalled on said trunnion means and overlying said actuator for cooperation therewith, and an electrically-releasable strike assembly having portions reaching into said compartment through one of said frame openings, one of said strike assembly portions being spring urged to move said lever to shift said switch actuator against its bias after release of said assembly.
Claim 9
Dependent Claim
155 words
In combination, a frame formed to provide a compartment and having an opening through an edge and an opening through a contiguous side into said compartment, a floor opposite one of said openings, guide means substantially parallel with and adjacent said floor, a switch assembly comprising a bracket formed to provide a base having opposed, parallel edges slidably receivable in said guide means and a block upstanding from said base, an electrical switch secured to one upstanding face of said block, said switch including an outwardly-biased actuator, trunnion means supported by said block and traversing said switch, a lever oscillably journalled on said trunnion means and overlying said actuator for cooperation therewith, and an electrically-releasable strike assembly having portions reaching into said compartment through one of said frame openings, one of said strike assembly portions being spring urged to move said lever to shift said switch actuator against its bias after release of said assembly.
Claim 10
Dependent Claim
42 words
The combination of claim 7 in which the guide means opens through the other of said frame openings, whereby said switch assembly may be entered into, or removed from, said compartment while said strike asembly portions are in place in said compartment.
Claim 11
Dependent Claim
56 words
The combination of claim 7 in which said strike assembly includes an electrically-energizable solenoid, a further lever having opposite arms, and means operatively connecting one of said arms to said solenoid, the other of said arms being arranged to move said first-named lever, upon energization of said solenoid, to move said switch actuator against its bias.
Claim 12
Dependent Claim
120 words
For use with a frame formed to provide a floor, an upstanding wall and a partition substantially parallel with said wall, said wall and partition being formed with facing guide grooves substantially at their junctures with said floor, the invention which comprises a base formed at its lateral edges for sliding reception in such guide grooves, an upstanding block, said block being formed with a transverse perforation near its upper, rear corner, a microswitch secured to an upstanding face of said block and including an outwardly-biased actuator, trunnion means supported in said perforation and traversing and overlying said switch rearwardly of said actuator, and a lever oscillably supported on said trunnion means and extending forwardly therefrom to overlie said actuator.
Claim 13
Dependent Claim
120 words
For use with a frame formed to provide a floor, an upstanding wall and a partition substantially parallel with said wall, said wall and partition being formed with facing guide grooves substantially at their junctures with said floor, the invention which comprises a base formed at its lateral edges for sliding reception in such guide grooves, an upstanding block, said block being formed with a transverse perforation near its upper, rear corner, a microswitch secured to an upstanding face of said block and including an outwardly-biased actuator, trunnion means supported in said perforation and traversing and overlying said switch rearwardly of said actuator, and a lever oscillably supported on said trunnion means and extending forwardly therefrom to overlie said actuator.
Claim 14
Dependent Claim
79 words
The invention of claim 10 in which said block is located substantially mid-way between the lateral edges of said base, and including a second microswitch secured to the opposite upstanding face of said block and including an outwardly-biased actuator, said trunnion means also traversing and overlying said second switch rearwardly of the actuator of said second switch, and a second lever oscillably supported on said trunnion means and extending forwardly therefrom to overlie the actuator of said second switch.
Claim 15
Dependent Claim
79 words
A switch assembly comprising a base having opposite lateral edges, an upstanding block substantially parallel with said edges, said block being formed with a transverse perforation near its upper, rear corner, a microswitch secured to an upstanding face of said block and including an outwardly-biased actuator, trunnion means supported in said perforation and traversing and overlying said switch rearwardly of said actuator, and a lever oscillably supported on said trunnion means and extending forwardly therefrom to overlie said actuator.
Claim 16
Dependent Claim
79 words
A switch assembly comprising a base having opposite lateral edges, an upstanding block substantially parallel with said edges, said block being formed with a transverse perforation near its upper, rear corner, a microswitch secured to an upstanding face of said block and including an outwardly-biased actuator, trunnion means supported in said perforation and traversing and overlying said switch rearwardly of said actuator, and a lever oscillably supported on said trunnion means and extending forwardly therefrom to overlie said actuator.
Claim 17
Dependent Claim
135 words
In combination, a frame formed to provide a compartment having an opening through one edge and a second opening through a contiguous side, an electrically-releasable strike assembly having portions reaching into said compartment through one of said frame openings, and a switch assembly comprising a bracket formed to provide a base and a block upstanding from said base, an electrical switch secured to one upstanding face of said block and including an outwardly-biased actuator, trunnion means supported by said block and traversing said switch, a lever oscillably journalled on said trunnion means and overlying said actuator for cooperation therewith, said switch assembly being enterable into said compartment through the other of said openings, while said strike assembly portions are in place, to present said lever for cooperative engagement by one of said strike assembly portions.
Claim 18
Dependent Claim
135 words
In combination, a frame formed to provide a compartment having an opening through one edge and a second opening through a contiguous side, an electrically-releasable strike assembly having portions reaching into said compartment through one of said frame openings, and a switch assembly comprising a bracket formed to provide a base and a block upstanding from said base, an electrical switch secured to one upstanding face of said block and including an outwardly-biased actuator, trunnion means supported by said block and traversing said switch, a lever oscillably journalled on said trunnion means and overlying said actuator for cooperation therewith, said switch assembly being enterable into said compartment through the other of said openings, while said strike assembly portions are in place, to present said lever for cooperative engagement by one of said strike assembly portions.
Claim 19
Dependent Claim
24 words
The combination of claim 13 including means for restraining movement of said switch assembly within said compartment once said lever has been so presented.
Claim 20
Dependent Claim
135 words
In combination, a frame formed to provide a compartment having an opening through one edge and a second opening through a contiguous side, an electrically-releasable strike assembly having portions reaching into said compartment through one of said frame openings, a switch assembly comprising a bracket formed to provide a base, an electrical on-off switch secured to said base and including a reversely-movable actuator biased toward one extreme position, a lever journalled on said base for cooperative engagement with said actuator, and cooperating means on said frame and on said base for positioning said switch assembly within said frame compartment, said switch assembly being enterable into said compartment through the other of said openings, while said strike assEmbly portions are in place, to present said lever for cooperative engagement by one of said strike assembly portions.
Claim 21
Dependent Claim
135 words
In combination, a frame formed to provide a compartment having an opening through one edge and a second opening through a contiguous side, an electrically-releasable strike assembly having portions reaching into said compartment through one of said frame openings, a switch assembly comprising a bracket formed to provide a base, an electrical on-off switch secured to said base and including a reversely-movable actuator biased toward one extreme position, a lever journalled on said base for cooperative engagement with said actuator, and cooperating means on said frame and on said base for positioning said switch assembly within said frame compartment, said switch assembly being enterable into said compartment through the other of said openings, while said strike assEmbly portions are in place, to present said lever for cooperative engagement by one of said strike assembly portions.
Claim 22
Dependent Claim
39 words
The combination of claim 15 in which said frame and said base are provided with cooperating means for readily releasably retaining said switch assembly in place for such cooperative engagement of said one strike assembly portion with said lever.
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) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |