US3810671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jettison device for helicopter load carrying system
Assignee: RTX Corp
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Filing: 1972-08-30
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Granted: 1974-05-14
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Expires: 1992-08-30
Abstract
Abstract A jettison device for the load carrying system of a helicopter which comprises an explosively operated mechanism for both jettisoning the load held by a hook at the end of a pendant and simultaneously cutting the hook retrieval cable.
Inventors
- 👤 P Jeffery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:05
CPC Classifications
B; B60; B60N; B60N3/00; B60N3/04; B64; B64D; B64D1/00; B64D1/22
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
65 words
A jettison device for the load carrying system of a helicopter including; load supporting means; means suspending said load supporting means from said helicopter; means separate from said suspending means for retrieving said load supporting means for storage in said helicopter; an explosively operated device; and means actuated by said explosively operated device for simultaneously jettisoning said load supporting means and severing said retrieving means.
Claim 2
Dependent Claim
65 words
A jettison device for the load carrying system of a helicopter including; load supporting means; means suspending said load supporting means from said helicopter; means separate from said suspending means for retrieving said load supporting means for storage in said helicopter; an explosively operated device; and means actuated by said explosively operated device for simultaneously jettisoning said load supporting means and severing said retrieving means.
Claim 3
Dependent Claim
85 words
A jettison device for the load carrying system of a helicopter including; load supporting means; means suspending said load supporting means from said helicopter; means separate from said suspending means for retrieving said load supporting means for storage in said helicopter; explosively operated means associated with said suspending means; means actuated by said explosively operated means for separating said suspending means and said load supporting means; and means simultaneously actuated by said explosively operated means for disconnecting said retrieving means from said load supporting means.
Claim 4
Dependent Claim
85 words
A jettison device for the load carrying system of a helicopter including; load supporting means; means suspending said load supporting means from said helicopter; means separate from said suspending means for retrieving said load supporting means for storage in said helicopter; explosively operated means associated with said suspending means; means actuated by said explosively operated means for separating said suspending means and said load supporting means; and means simultaneously actuated by said explosively operated means for disconnecting said retrieving means from said load supporting means.
Claim 5
Dependent Claim
9 words
shoulder means cooperatively engaging said lower chamber shoulder means;
Claim 6
Dependent Claim
9 words
shoulder means cooperatively engaging said lower chamber shoulder means;
Claim 7
Dependent Claim
10 words
land means for engaging the periphery of said lower chamber;
Claim 8
Dependent Claim
10 words
land means for engaging the periphery of said lower chamber;
Claim 9
Dependent Claim
140 words
A jettison device for the load carrying system of a helicopter including; load supporting means; means for retrieving said load supporting means for storage in said helicopter; means connecting said helicopter and said load supporting means; said connecting means including housing means having a plurality of chambers therein; one of said chambers having piston means therein; another of said chambers having means therein for retaining said load supporting means in said housing means; another of said chambers having said retrievIng means passing therethrough and having means therein for severing said retrieving means; means operatively connecting said piston means and said load supporting retaining means; and pressure generating means connected to said one of said chambers for simultaneously actuating said piston means and said severing means for releasing said load supporting means from said housing means and severing said retrieving means.
Claim 10
Dependent Claim
140 words
A jettison device for the load carrying system of a helicopter including; load supporting means; means for retrieving said load supporting means for storage in said helicopter; means connecting said helicopter and said load supporting means; said connecting means including housing means having a plurality of chambers therein; one of said chambers having piston means therein; another of said chambers having means therein for retaining said load supporting means in said housing means; another of said chambers having said retrievIng means passing therethrough and having means therein for severing said retrieving means; means operatively connecting said piston means and said load supporting retaining means; and pressure generating means connected to said one of said chambers for simultaneously actuating said piston means and said severing means for releasing said load supporting means from said housing means and severing said retrieving means.
Claim 11
Dependent Claim
7 words
and abutment means for engaging said pendant.
Claim 12
Dependent Claim
7 words
and abutment means for engaging said pendant.
Claim 13
Dependent Claim
152 words
A jettison device for the load carrying system of a helicopter including; load supporting means; means for retrieving said load supporting means for storage in said helicopter; means connecting said helicopter and said load supporting means; said connecting means including housing means having a plurality of chambers therein; one of said chambers having piston means therein, another of said chambers having jaw means therein for retaining said load supporting means in said housing; means associated with said piston means for retaining said jaw means in a load supporting position in said another chamber; still another of said chambers having said retrieving means passing therethrough and having means therein for severing said retrieving means; pressure generating means connected to said one of said chambers; and means for actuating said pressure generating means to simultaneously cause said jaw means to release said load supporting means and said severing means to sever said retrieving means.
Claim 14
Dependent Claim
152 words
A jettison device for the load carrying system of a helicopter including; load supporting means; means for retrieving said load supporting means for storage in said helicopter; means connecting said helicopter and said load supporting means; said connecting means including housing means having a plurality of chambers therein; one of said chambers having piston means therein, another of said chambers having jaw means therein for retaining said load supporting means in said housing; means associated with said piston means for retaining said jaw means in a load supporting position in said another chamber; still another of said chambers having said retrieving means passing therethrough and having means therein for severing said retrieving means; pressure generating means connected to said one of said chambers; and means for actuating said pressure generating means to simultaneously cause said jaw means to release said load supporting means and said severing means to sever said retrieving means.
Claim 15
Independent Claim
160 words
A device for jettisoning a load carried by a helicopter, said device including; a housing connected to fixed helicopter structure and to a load carrying pendant; said pendant having means at one end for attachment to said housing and a cargo hook at its other end; said housing having an upper chamber and a lower chamber; pressure generating means connected to said upper chamber; cable guide means connected to said upper chamber; a cable connected at one end to helicopter structure and at its other end to said pendant cargo hook and passing through said cable guide means; said cable guide means including means for severing said cable; a piston within said upper chamber; a piston rod connected to said piston and extending into said lower chamber; collar means on a portion of said piston rod within said lower chamber; shoulder means on the periphery of said lower chamber; and jaw means in said lower chamber; said jaw means including;
Claim 16
Independent Claim
160 words
A device for jettisoning a load carried by a helicopter, said device including; a housing connected to fixed helicopter structure and to a load carrying pendant; said pendant having means at one end for attachment to said housing and a cargo hook at its other end; said housing having an upper chamber and a lower chamber; pressure generating means connected to said upper chamber; cable guide means connected to said upper chamber; a cable connected at one end to helicopter structure and at its other end to said pendant cargo hook and passing through said cable guide means; said cable guide means including means for severing said cable; a piston within said upper chamber; a piston rod connected to said piston and extending into said lower chamber; collar means on a portion of said piston rod within said lower chamber; shoulder means on the periphery of said lower chamber; and jaw means in said lower chamber; said jaw means including;
Claim 17
Dependent Claim
79 words
A helicopter load jettisoning device in accordance with claim 5 in which the pendant attachment means includes a bulbous end normally aligned longitudinally with said piston rod when connected to said housing; said bulbous end and said piston rod being spaced apart longitudinally so that displacement of said piston and piston rod due to actuation of said pressure generating means displaces said collar means from engagement with said jaw flange means before said piston rod contacts said bulbous end.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-13 | 1977-11-12 | 1978-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-13 | 1981-11-12 | 1982-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-13 | 1985-11-12 | 1986-05-14 | $7700.00 | Window Closed / Lapsed |