US3597809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separating link
Assignee: Rixson Inc
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Filing: 1969-08-11
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Granted: 1971-08-10
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Expires: 1989-08-11
Abstract
Abstract A separating link and operator particularly adapted as a substitute for the fusible links employed in prior art closure control systems. A first embodiment of the separating link has two link sections whose joinder is controlled by a pull wire latch. One section is a cam link section having an integral ball cam. The second section is a socket link section formed with a socket for receiving the cam in mating relationship. A pair of locks couple the link sections together. The latching engagement of one lock is dependent upon the latching engagement of the other or operating lock. The pull wire latch is connected to a magnetizable armature which reciprocates within a solenoid. Upon deenergization of the solenoid, the pull wire latch is removed from the operating lock thus disengaging this lock. The ball cam then partially separates the two links sections with a resultant disengagement of the dependent lock. Accordingly, the links sections are fully separated in response to external forces applied by a closure, for example. A modification is incorporated within a second embodiment by which each link is a sandwich of elements including a fusible layer. This embodiment thus fully separates in response to excessive heat which causes melting of one or both of the fusible layers, or, alternatively, in response to the removal of the pull wire latch.
Inventors
- 👤 Burke J Crane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:15
CPC Classifications
E; E05; E05F; E05F1/00; E05F1/002; E05F1/006; A; A62; A62C; A62C2/00; A62C2/06; A62C2/12; A62C2/14; A62C2/24; A62C2/246; A62C2/247; E05Y; E05Y2201/00; E05Y2201/40; E05Y2201/404; E05Y2201/41; E05Y2201/50; Y; Y10; Y10S; Y10S24/00; Y10S24/30; Y10S24/31; Y10S24/37; Y10T; Y10T24/00; Y10T24/45; Y10T24/45005; Y10T24/45099; Y10T24/4511; Y10T24/49
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
144 words
A separating link whose joinder is controlled by a pull wire latch, comprising a cam link section having an integral ball cam, a socket link section formed with a socket for receiving the cam in mating relationship, a pair of locks with the latching engagement of one lock being dependent upon the latching engagement of the other or operating lock, both locks having components integral with both of the link sections to couple the link sections one to the other, the dependent lock including a latch finger integral with each link section and both fingers slideably interleaved to engage that lock, and the operating lock including one or more hooks integral with each link section for receiving the pull wire which serves as a latch to engage the operating lock and thus the dependent lock to couple both link sections one to the other.
Claim 2
Dependent Claim
144 words
A separating link whose joinder is controlled by a pull wire latch, comprising a cam link section having an integral ball cam, a socket link section formed with a socket for receiving the cam in mating relationship, a pair of locks with the latching engagement of one lock being dependent upon the latching engagement of the other or operating lock, both locks having components integral with both of the link sections to couple the link sections one to the other, the dependent lock including a latch finger integral with each link section and both fingers slideably interleaved to engage that lock, and the operating lock including one or more hooks integral with each link section for receiving the pull wire which serves as a latch to engage the operating lock and thus the dependent lock to couple both link sections one to the other.
Claim 3
Dependent Claim
65 words
The combination of claim 1 having a pull wire operator comprising an electrically energizable solenoid, and a magnetizable armature associated with the solenoid and connected to the pull wire to remove the wire from latching position with the hooks of the operating lock to disengage that lock thus enabling the ball cam to separate the two link sections and thus also disengage the dependent lock.
Claim 4
Dependent Claim
35 words
The combination of claim 2 in which the terminal end of each link section is coupled to closure-controlling means by which separation of the link sections enable a related closure to assume a desired position.
Claim 5
Dependent Claim
49 words
The combination of claim 1 in which the cam link section includes a connector element, a locking cam element, and a layer of fusible material sandwiched therebetween, and the socket link section includes a second connector element, a locking socket element and a layer of fusible material sandwiched therebetween.
Claim 6
Dependent Claim
22 words
The combination of claim 4 in which the latch fingers and the hooks are integral with the cam and socket link elements.
Claim 7
Dependent Claim
135 words
A separating link whose joinder is controlled by remote operation of an actuating element which extends from the link to a remote location, comprising first and second link sections, a pair of locks as integral parts of the link sections with the latching engagement of one lock being dependent upon the latching engagement of the other or operating lock, link separating means operable when the operating lock is disengaged to exert a separating force upon the link sections, and in which the actuating element serves as a latch for the operating lock which when remotely actuated disengages the operating lock to enable the link separating means to produce automatic disengagement of the dependent lock and thus separation of the two link sections in response to forces tending to pull the links one from the other.
Claim 8
Dependent Claim
135 words
A separating link whose joinder is controlled by remote operation of an actuating element which extends from the link to a remote location, comprising first and second link sections, a pair of locks as integral parts of the link sections with the latching engagement of one lock being dependent upon the latching engagement of the other or operating lock, link separating means operable when the operating lock is disengaged to exert a separating force upon the link sections, and in which the actuating element serves as a latch for the operating lock which when remotely actuated disengages the operating lock to enable the link separating means to produce automatic disengagement of the dependent lock and thus separation of the two link sections in response to forces tending to pull the links one from the other.
Claim 9
Dependent Claim
38 words
The combination of claim 6 in which the link separating means includes a cam fixed to one of the link sections which acts to separate both link sections one from the other upon actuation of the actuating element.
Claim 10
Dependent Claim
41 words
The combination of claim 6 in which one or both link sections includes a pair of elements and layer of fusible material sandwiched therebetween by which melting of either or both of the fusible layers effects separation of the link sections.
Claim 11
Dependent Claim
35 words
The combination of claim 8 in which the terminal end of each link section is coupled to closure-cOntrolling means by which separation of the link sections enables a related closure to assume a desired position.
Claim 12
Dependent Claim
44 words
The combination of claim 8 in which the terminal end of each link section is coupled to closure-controlling means by which separation of the link sections by either actuation of the actuating element or melting of a fusible layer effects separation of the links.
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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |