US3734078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for anticipating anti-g force in a moving vehicle
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1971-05-12
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Granted: 1973-05-22
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Expires: 1991-05-12
Abstract
Abstract An anti-G valve with a pressure sensitive wall member which compares ambient pressure with ram pressure to anticipate a condition from which high onset of ''''g'''' could occur and transmits an operational signal. The transmitted operational signal controls the flow of a first fluid under pressure to unbalance a valve permitting the first fluid to flow through a nozzle into a chamber. The static pressure adjacent the nozzle outlet being lower than ambient pressure causes ambient air to enter the chamber. The first fluid and ambient air together pressurize an anti-G garment to protect a recipient from any adverse effects caused by an increase in the acceleration force.
Inventors
- 👤 Robert Louis Cramer
- 👤 John William Henneman
- 👤 William Perry Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:12
CPC Classifications
B; B64; B64D; B64D10/00; A; A62; A62B; A62B17/00; Y; Y10; Y10T; Y10T137/00; Y10T137/0753
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
232 words
An anti-G valve for use with an anti-G garment comprising: a housing having a first chamber connected to an inlet port in communication with a first source of fluid under pressure and a first outlet port in communication with ambient, a second chamber connected to said inlet port and a second outlet port in communication with said anti-G garment, and a third chamber connected to receive a signal representative of the dynamic conditions which could adversely effect a recipient wearer of the anti-G garment; a weight located in said first chamber, said weight moving in response to an accelerational force; control valve meanS located in said first chamber responsive to movement of said weight, said control valve opening a supply passage to said second chamber for permitting said first source of fluid to pressurize said anti-G garment, said pressurized anti-G garment protecting the recipient wearer thereof from any adverse effects caused by a rapid increase in the accelerational force; and anticipatory means located in said third chamber for comparing the signal received from the dynamic condition with a reference signal to create an operation signal, said created operational signal being transmitted to said control valve means for opening said inlet port into said second chamber to permit said first source of fluid to begin inflating said anti-G garment prior to the operation of said control valve means by movement of said weight.
Claim 2
Dependent Claim
232 words
An anti-G valve for use with an anti-G garment comprising: a housing having a first chamber connected to an inlet port in communication with a first source of fluid under pressure and a first outlet port in communication with ambient, a second chamber connected to said inlet port and a second outlet port in communication with said anti-G garment, and a third chamber connected to receive a signal representative of the dynamic conditions which could adversely effect a recipient wearer of the anti-G garment; a weight located in said first chamber, said weight moving in response to an accelerational force; control valve meanS located in said first chamber responsive to movement of said weight, said control valve opening a supply passage to said second chamber for permitting said first source of fluid to pressurize said anti-G garment, said pressurized anti-G garment protecting the recipient wearer thereof from any adverse effects caused by a rapid increase in the accelerational force; and anticipatory means located in said third chamber for comparing the signal received from the dynamic condition with a reference signal to create an operation signal, said created operational signal being transmitted to said control valve means for opening said inlet port into said second chamber to permit said first source of fluid to begin inflating said anti-G garment prior to the operation of said control valve means by movement of said weight.
Claim 3
Dependent Claim
62 words
The anti-G valve as recited in claim 1 wherein said anticipatory means includes: wall means which divides said third chamber into a reference chamber and a sensing chamber, said reference chamber receiving a reference pressure and said sensing chamber receiving a velocity pressure, said reference pressure and velocity pressure creating a differential pressure across said wall means to provide said operational signal.
Claim 4
Dependent Claim
47 words
The anti-G valve as recited in claim 2 wherein said anticipatory means further includes: a plunger member connected to said wall means which when receiving said operational signal closes the first outlet port to restrict the flow of said first source of fluid from said first chamber.
Claim 5
Dependent Claim
52 words
The anti-G valve as recited in claim 3 wherein said control valve means includes: diaphragm means which divides said first chamber into a first control chamber and a flow chamber, said first control chamber being connected to said second chamber to receive the fluid pressure that is transmitted to said anti-G garment.
Claim 6
Dependent Claim
107 words
The anti-G valve as recited in claim 4 wherein said control valve means further includes: a shaft located in a bore in said housing, said bore being opened on both ends to the supply passage which transmits said first source of fluid to said flow chamber to balance the pressure on both ends of said shaft, said shaft having a face which seats on the housing surrounding a first opening in said supply passage to said second chamber from said inlet port, said shaft being responsive to the movement of said diaphragm means in response to a pressure differential between the flow chamber and the control chamber.
Claim 7
Dependent Claim
86 words
The anti-G valve as recited in claim 5 wherein said control valve means further includes: a first lever located in said first control chamber having one end thereof pivotally attached to the housing and the other end thereof positioned adjacent said diaphragm means; and a second lever having one end thereof connected to said shaft and the other end thereof slidably retained by said first shaft, said second lever being positioned in said first control chamber by a pivotal connection adjacent the bore retaining said shaft.
Claim 8
Dependent Claim
73 words
The anti-G valve as recited in claim 6 wherein said control valve means further includes: a second opening in the housing located between said flow chamber and a first passage communicating with said first outlet port; and resilient means for urging said weight away from said second opening in opposition to the force exerted by said acceleration force to permit said first source of fluid to flow to ambient through said first passage.
Claim 9
Dependent Claim
98 words
The anti-G valve as recited in claim 7 wherein said weight moves in response to an accelerational force overcoming said resilient means and closes the first passage from the flow chamber to the first outlet port, said first source of fluid in said flow chamber and the fluid pressure in said control chamber creating a pressure differential across said diaphragm means, said pressure differential causing said diaphragm means to move said first lever arm and transmit movement to said second lever arm, said second lever Arm moving said shaft away from said first opening to said second chamber.
Claim 10
Dependent Claim
118 words
The anti-G valve as recited in claim 8 wherein said supply passage from said first opening from the inlet port to said second chamber includes: a nozzle connected to said supply passage which extends into said second chamber, said nozzle having a convergent end section which increases the velocity of said first fluid being communicated from said inlet port, said increase in the velocity of said first fluid lowering the pressure in said second chamber adjacent the outlet of said nozzle, said lowered pressure permitting ambient air pressure to overcome a resilient member and enter said second chamber, said ambient air and said first source of fluid inflating and pressurizing said anti-G garment to protect said recipient wearer.
Claim 11
Dependent Claim
68 words
The anti-G valve as recited in claim 9 wherein said second chamber includes: a diaphragm member dividing a second passage to said second outlet port into an ambient chamber and a second control chamber, said second control chamber being connected to the flow chamber in said first chamber, said pressure differential across the diaphragm member controlling the fluid flow through the second outlet port from said second chamber.
Claim 12
Dependent Claim
49 words
The anti-G valve as recited in claim 10 further including: relief means located in the second passage between the second control chamber of said second chamber and the flow chamber in said first chamber for limiting the fluid pressure acting across said diaphragm member controlling the second outlet port.
Claim 13
Dependent Claim
28 words
The anti-G valve as recited in claim 11 further including: manual means for controlling the movement of said weight to test the operational characteristics of the control valve.
Claim 14
Dependent Claim
220 words
An anti-G valve for use with an anti-G garment comprising: a housing having a first chamber connected to an inlet port in communication with a first source of fluid under pressure and an outlet port in communication with ambient and a second chamber connected to said inlet port and a second outlet port in communication with said anti-G garment, said second chamber having an opening to ambient; a weight located in a cavity in the housing, said weight moving in response to an accelerational force; control valve means located in said first chamber responsive to movement of said weight, said control valve opening a supply passage from the inlet port to said second chamber; closure means resiliently held against the housing surrounding the ambient opening in said second chamber; and nozzle means connected to said supply passage for lowering the pressure in said second chamber upon opening of said supply passage allowing said first fluid to flow, said lowered pressure in said second chamber and ambient creating a pressure differential across said closure means, said pressure differential moving the resiliently held closure means away from said opening and permitting ambient to enter said second chamber, said first source of fluid and ambient being combined to pressurize the anti-G garment with a fluid mixture to conserve the first source of fluid.
Claim 15
Dependent Claim
220 words
An anti-G valve for use with an anti-G garment comprising: a housing having a first chamber connected to an inlet port in communication with a first source of fluid under pressure and an outlet port in communication with ambient and a second chamber connected to said inlet port and a second outlet port in communication with said anti-G garment, said second chamber having an opening to ambient; a weight located in a cavity in the housing, said weight moving in response to an accelerational force; control valve means located in said first chamber responsive to movement of said weight, said control valve opening a supply passage from the inlet port to said second chamber; closure means resiliently held against the housing surrounding the ambient opening in said second chamber; and nozzle means connected to said supply passage for lowering the pressure in said second chamber upon opening of said supply passage allowing said first fluid to flow, said lowered pressure in said second chamber and ambient creating a pressure differential across said closure means, said pressure differential moving the resiliently held closure means away from said opening and permitting ambient to enter said second chamber, said first source of fluid and ambient being combined to pressurize the anti-G garment with a fluid mixture to conserve the first source of fluid.
Claim 16
Dependent Claim
91 words
The anti-G valve as recited in claim 13 wherein said nozzle means includes: a cylindrical section connected to said supply passage; and a convergent end section connected to said cylindrical section, said convergent end section extending into said second chamber, said convergent end causing the velocity of said first fluid flowing through said passage to increase, said first fluid at the increased velocity exiting from said end section into said second chamber causing the pressure in the second chamber to be lowered and a pressure differential created across said closure means.
Claim 17
Dependent Claim
49 words
The anti-G valve as recited in claim 14 further including: relief means located in the second passage between the second control chamber of said second chamber and the flow chamber in said first chamber for limiting the fluid pressure acting across saiD diaphragm member controlling the second outlet port.
Claim 18
Dependent Claim
28 words
The anti-G valve as recited in claim 15 further including: manual means for controlling the movement of said weight to test the operational characteristics of the control valve.
Claim 19
Dependent Claim
30 words
The anti-G valve as recited in claim 14 further including: relief means connected to said second chamber for limiting the pressure of the fluid mixture supplied to the anti-G garment.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |