Patent US3887150A successfully refreshed from Google Patents.
US3887150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal ejector mechanism
Assignee: McDonnell Douglas Corp
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Filing: 1974-05-20
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Granted: 1975-06-03
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Expires: 1994-05-20
Abstract
Abstract An internal ejector mechanism for releasably fastening a separable unit to a carrier unit. The separable unit or store has a threaded well or cavity liner in which a disposable ejector fits. The ejector consists of an outer housing or cylinder, an ejector piston, an ejector piston retraction spring, a plunger actuator and cartridge cap with electrical contacts, and an explosive cartridge. The carrier unit contains a mounting bracket or lug having a plurality of latching balls radially movable through its cylindrical walls. When the balls are urged outwardly by a ball retention plunger they fit within a groove in the ejector housing to lock the separable unit to the carrier unit. The cartridge actuated piston moves the ball retention plunger to permit inward movment of the balls. This frees the ejector housing and releases the separable unit.
Inventors
- 👤 Jr Thaddeus Jakubowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:24
CPC Classifications
B; B64; B64D; B64D1/00; B64D1/02; B64D1/04; B64D1/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
226 words
An internal ejector mechanism for releasably retaining a separable unit with a carrier unit, said mechanism comprising: a disposable ejector cylinder attached to said separable unit, a piston within said cylinder with a cartridge therein and a movable plunger actuator thereover, said cylinder terminating in an annular ejector housing ring with an inwardly directed flange, a mounting lug secured to said carrier unit, said lug having downwardly extending walls defining a mounting lug cylinder, a ball retention plunger vertically movable within said mounting lug cylinder and of substantially the same diameter size as that of the inner diameter of said mounting lug cylinder, said mounting lug cylinder having a plurality of openings into which are mounted balls adapted for radial movement therein, said plunger having a shaft of reduced diameter at its lower end to permit inward movement of said balls, said plunger having a truncated conical portion between its two diameters for urging said balls outwardly upon downward movement of said plunger, said balls fitting under said flange to retain said disposaBle ejector cylinder with said mounting lug, said cartridge being operable to move said plunger upwardly to free said balls from said flange to separate said units whereupon on actuation of said cartridge said piston moves relatively to said mounting lug cylinder to unlatch said units and also to impart a separation force therebetween.
Claim 2
Dependent Claim
226 words
An internal ejector mechanism for releasably retaining a separable unit with a carrier unit, said mechanism comprising: a disposable ejector cylinder attached to said separable unit, a piston within said cylinder with a cartridge therein and a movable plunger actuator thereover, said cylinder terminating in an annular ejector housing ring with an inwardly directed flange, a mounting lug secured to said carrier unit, said lug having downwardly extending walls defining a mounting lug cylinder, a ball retention plunger vertically movable within said mounting lug cylinder and of substantially the same diameter size as that of the inner diameter of said mounting lug cylinder, said mounting lug cylinder having a plurality of openings into which are mounted balls adapted for radial movement therein, said plunger having a shaft of reduced diameter at its lower end to permit inward movement of said balls, said plunger having a truncated conical portion between its two diameters for urging said balls outwardly upon downward movement of said plunger, said balls fitting under said flange to retain said disposaBle ejector cylinder with said mounting lug, said cartridge being operable to move said plunger upwardly to free said balls from said flange to separate said units whereupon on actuation of said cartridge said piston moves relatively to said mounting lug cylinder to unlatch said units and also to impart a separation force therebetween.
Claim 3
Dependent Claim
226 words
An internal ejector mechanism for releasably retaining a separable unit with a carrier unit, said mechanism comprising: a disposable ejector cylinder attached to said separable unit, a piston within said cylinder with a cartridge therein and a movable plunger actuator thereover, said cylinder terminating in an annular ejector housing ring with an inwardly directed flange, a mounting lug secured to said carrier unit, said lug having downwardly extending walls defining a mounting lug cylinder, a ball retention plunger vertically movable within said mounting lug cylinder and of substantially the same diameter size as that of the inner diameter of said mounting lug cylinder, said mounting lug cylinder having a plurality of openings into which are mounted balls adapted for radial movement therein, said plunger having a shaft of reduced diameter at its lower end to permit inward movement of said balls, said plunger having a truncated conical portion between its two diameters for urging said balls outwardly upon downward movement of said plunger, said balls fitting under said flange to retain said disposaBle ejector cylinder with said mounting lug, said cartridge being operable to move said plunger upwardly to free said balls from said flange to separate said units whereupon on actuation of said cartridge said piston moves relatively to said mounting lug cylinder to unlatch said units and also to impart a separation force therebetween.
Claim 4
Dependent Claim
226 words
An internal ejector mechanism for releasably retaining a separable unit with a carrier unit, said mechanism comprising: a disposable ejector cylinder attached to said separable unit, a piston within said cylinder with a cartridge therein and a movable plunger actuator thereover, said cylinder terminating in an annular ejector housing ring with an inwardly directed flange, a mounting lug secured to said carrier unit, said lug having downwardly extending walls defining a mounting lug cylinder, a ball retention plunger vertically movable within said mounting lug cylinder and of substantially the same diameter size as that of the inner diameter of said mounting lug cylinder, said mounting lug cylinder having a plurality of openings into which are mounted balls adapted for radial movement therein, said plunger having a shaft of reduced diameter at its lower end to permit inward movement of said balls, said plunger having a truncated conical portion between its two diameters for urging said balls outwardly upon downward movement of said plunger, said balls fitting under said flange to retain said disposaBle ejector cylinder with said mounting lug, said cartridge being operable to move said plunger upwardly to free said balls from said flange to separate said units whereupon on actuation of said cartridge said piston moves relatively to said mounting lug cylinder to unlatch said units and also to impart a separation force therebetween.
Claim 5
Dependent Claim
51 words
An internal ejector mechanism as in claim 1 wherein a ball retention collar is mounted over said mounting lug cylinder for movement over said balls to keep said balls inwardly depressed until said ejector housing ring moves said collar upwardly and said balls move outwardly into a groove under said flange.
Claim 6
Dependent Claim
19 words
An internal ejector mechanism as in claim 2 wherein said ball retention collar is spring-urged downwardly over said balls.
Claim 7
Dependent Claim
31 words
An internal ejector mechanism as in claim 1 wherein said disposable ejector cylinder is threadedly mounted in said separable unit whereby threaded adjustment regulates spacing between said units when fastened together.
References Cited (Backward Citations)
US3787012A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |