US3942828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromechanical device cum manual control of safety outfit boxes on aircrafts
Assignee: R Alkan et Cie
•
Filing: 1975-04-10
•
Granted: 1976-03-09
•
Expires: 1995-04-10
Abstract
Abstract This electromechanical device with a manual emergency control for opening the door of a safety outfit box on board an aircraft comprises in said box a spring-loaded piston responsive to an electromagnet and having a head shaped to control the movements of registering locking members into or out from their locking position in which they engage a retaining hook engageable in turn with a cross member of a strap carried by the door. Said locking members may consist of balls or small ball-bearings engageable in corresponding holes formed in a sleeve concentric to said piston. Manual control means are provided for actuating said piston from the outside and thus opening the door in case of emergency.
Inventors
- 👤 Georges E. Bourrie
- 👤 Robert M. Lensel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:43
CPC Classifications
E; E05; E05B; E05B47/00; E05B47/06; E05B47/0603; E05B17/00; E05B17/20; E05B17/2007; E05B17/2011; E05B47/0001; E05B47/0002; E05B47/0003; E05B47/0004; E05B63/00; E05B63/12; E05B63/121; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/1043; Y10T292/1075; Y10T292/1082
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
152 words
Electromechanical device with manual emergency control for opening the door of a safety outfit box on board an aircraft, comprising a box having two portions to be interlocked, an electromagnet being mounted in said box, a spring loaded piston responsive to and slideably mounted on said electromagnet and having a head formed with successive axial portions having different diameters, locking members being associated with said piston head and adapted to take either an outward projecting locking position or a retracted release position, a retaining hook pivotally mounted on one of the two portions of said box to be interlocked, a strap carried by the other of said box portions and positioned for being engaged and retained by said hook, said retaining hook comprising in planes perpendicular to its axis of pivotal movement a pair of parallel symmetrical wings each provided with a hole for receiving said locking members in the locking position.
Claim 2
Dependent Claim
152 words
Electromechanical device with manual emergency control for opening the door of a safety outfit box on board an aircraft, comprising a box having two portions to be interlocked, an electromagnet being mounted in said box, a spring loaded piston responsive to and slideably mounted on said electromagnet and having a head formed with successive axial portions having different diameters, locking members being associated with said piston head and adapted to take either an outward projecting locking position or a retracted release position, a retaining hook pivotally mounted on one of the two portions of said box to be interlocked, a strap carried by the other of said box portions and positioned for being engaged and retained by said hook, said retaining hook comprising in planes perpendicular to its axis of pivotal movement a pair of parallel symmetrical wings each provided with a hole for receiving said locking members in the locking position.
Claim 3
Dependent Claim
42 words
Device as claimed in claim 1, wherein said box presents at least one opening, a rod insertable through said opening for engaging said piston head for pushing back said spring-loaded piston and consequently moving said locking members to their retracted release position.
Claim 4
Dependent Claim
46 words
Device as claimed in claim 1, wherein each of said symmetrical wings of said retaining hook has a pair of holes with said holes being positioned for being engaged by said locking members in the locking position and the release position of said box door respectively.
Claim 5
Dependent Claim
60 words
Device as claimed in claim 1, wherein said locking members comprise balls positioned for being pushed by said piston, a cylindrical sleeve surrounding said piston and having holes in the wall of said sleeve with said balls in said holes and moveable therein as a function of the diameter of the portion of said piston head registering with said balls.
Claim 6
Dependent Claim
68 words
Device as claimed in claim 1, including a sleeve surrounding said piston and wherein said locking member comprise elements pivoted to said sleeve surrounding said piston, a small ball-bearing is carried at the free end of each of said element and is responsive to said piston and a locking head formed on each of said elements and said retaining hook has holes positioned for receiving said locking heads.
References Cited (Backward Citations)
US1199199A
Cited
US1429389A
Cited
US1456114A
Cited
US2647789A
Cited
US2676047A
Cited
US2752189A
Cited
FR1562878A
Cited
US3504511A
Cited
US3635511A
Cited
US3658370A
Cited
US3753316A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-09 | 1979-09-08 | 1980-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-09 | 1983-09-08 | 1984-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-09 | 1987-09-08 | 1988-03-09 | $7700.00 | Window Closed / Lapsed |