US3576119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromechanical door lock system
Assignee: Individual
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Filing: 1968-11-25
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Granted: 1971-04-27
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Expires: 1988-11-25
Abstract
Abstract An electromechanical door lock system that has a housing with a lock bolt that is resiliently biased to a retracted position with a solenoid operated latch that holds the lock bolt in the extended, locked position, and the housing has openings for mechanically locking and unlocking the bolt, and a timing circuit for selectively energizing the solenoid to release the lock bolt, which timing circuit has override switches for controlling the position of the lock bolt independently of the timing circuit.
Inventors
- 👤 Archie H Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:02
CPC Classifications
E; E05; E05B; E05B47/00; E05B47/06; E05B47/0603; E05B47/0001; E05B47/0002; E05B47/0003; E05B47/0004; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/0999; Y10T292/1001; Y10T292/1014; Y10T292/1021; Y10T70/00; Y10T70/70; Y10T70/7006; Y10T70/7028; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7661
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
233 words
An electromechanical door lock system comprising: a resiliently biased lock bolt that is normally biased to a retracted position, means for engaging and holding the lock bolt in an extended position, solenoid means for moving the engaging means to a nonengaging position in the energized condition, circuit means for energizing the solenoid means, first resilient means for biasing said lock bolt to said retracted position, second resilient means for pulling said engaging means into engagement with said lock bolt, said engaging means comprises a movable plate, said lock bolt having a slot midway its length for receiving said plate, a housing for enclosing said lock bolt, said engaging means and said solenoid means, said plate has a longitudinal portion, the end of which extends out of said housing in a position to be contacted and moved, moving said plate against the force of said second resilient means and out of said slot, said housing has an opening through which said lock bolt exclusively projects when in other than substantially completely retracted position, means within said housing cooperating with the housing at said opening for supporting and guiding said lock bolt, and said housing has at least one opening adjacent said lock bolt for access to physically contacT said lock bolt and move said lock bolt against the force of said first resilient means to a position to be engaged by said engaging means.
Claim 2
Dependent Claim
233 words
An electromechanical door lock system comprising: a resiliently biased lock bolt that is normally biased to a retracted position, means for engaging and holding the lock bolt in an extended position, solenoid means for moving the engaging means to a nonengaging position in the energized condition, circuit means for energizing the solenoid means, first resilient means for biasing said lock bolt to said retracted position, second resilient means for pulling said engaging means into engagement with said lock bolt, said engaging means comprises a movable plate, said lock bolt having a slot midway its length for receiving said plate, a housing for enclosing said lock bolt, said engaging means and said solenoid means, said plate has a longitudinal portion, the end of which extends out of said housing in a position to be contacted and moved, moving said plate against the force of said second resilient means and out of said slot, said housing has an opening through which said lock bolt exclusively projects when in other than substantially completely retracted position, means within said housing cooperating with the housing at said opening for supporting and guiding said lock bolt, and said housing has at least one opening adjacent said lock bolt for access to physically contacT said lock bolt and move said lock bolt against the force of said first resilient means to a position to be engaged by said engaging means.
Claim 3
Dependent Claim
234 words
An electromechanical door lock system comprising: a resiliently biased lock bolt that is normally biased to a retracted means for engaging and holding the lock bolt in an extended position, solenoid means for moving the engaging means to a nonengaging position in the energized condition, circuit means for energizing the solenoid means, first resilient means for biasing said lock bolt to said retracted position, second resilient means for pulling said engaging means into engagement with said lock bolt, said engaging means comprises a movable plate, said lock bolt having a slot midway its length for receiving said plate, a housing for enclosing said lock bolt, said engaging means and said solenoid means, said plate has a longitudinal portion, the end of which extends out of said housing in a position to be contacted and moved, moving said plate against the force of said second resilient means and out of said slot, said housing has at least one opening adjacent said lock bolt for access to physically contact said lock bolt and move said lock bolt against the force of said first resilient means to a position to be engaged by said engaging means, a normally closed first switch means in said circuit means positioned adjacent said lock bolt, and said lock bolt having a side projection that contacts and opens said first switch means upon movement of said lock bolt to said retracted position.
Claim 4
Dependent Claim
234 words
An electromechanical door lock system comprising: a resiliently biased lock bolt that is normally biased to a retracted means for engaging and holding the lock bolt in an extended position, solenoid means for moving the engaging means to a nonengaging position in the energized condition, circuit means for energizing the solenoid means, first resilient means for biasing said lock bolt to said retracted position, second resilient means for pulling said engaging means into engagement with said lock bolt, said engaging means comprises a movable plate, said lock bolt having a slot midway its length for receiving said plate, a housing for enclosing said lock bolt, said engaging means and said solenoid means, said plate has a longitudinal portion, the end of which extends out of said housing in a position to be contacted and moved, moving said plate against the force of said second resilient means and out of said slot, said housing has at least one opening adjacent said lock bolt for access to physically contact said lock bolt and move said lock bolt against the force of said first resilient means to a position to be engaged by said engaging means, a normally closed first switch means in said circuit means positioned adjacent said lock bolt, and said lock bolt having a side projection that contacts and opens said first switch means upon movement of said lock bolt to said retracted position.
Claim 5
Dependent Claim
36 words
An electromechanical door lock system as claimed in Claim 2 in which: second switch means in said circuit means for opening said circuit means, and timer means for opening said second switch means at selective time.
Claim 6
Dependent Claim
47 words
An electromechanical door lock system as claimed in Claim 3 in which: a relay that when energized, opens a third switch means in said circuit means opening said circuit means, second circuit means for energizing said relay, and fourth switch means for closing a second circuit means.
Claim 7
Dependent Claim
28 words
An electromechanical door lock system as claimed in Claim 4 in which: said second circuit means holds said relay energized through a contact in said third switch means.
Claim 8
Dependent Claim
32 words
An electromechanical door lock system as claimed in Claim 5 in which: said second switch means opens said second circuit means and deenergized said relay upon being opened by said timer 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) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |