US3877226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-mechanical actuator
Assignee: Individual
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Filing: 1973-06-18
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Granted: 1975-04-15
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Expires: 1993-06-18
Abstract
Abstract An electro-mechanical actuator for providing linear reciprocal motion which translates the short, abrupt linear stroke of a solenoid into a longer stroke of more uniform force on an actuating rod. The linear motion of the solenoid armature is coupled through a large spring adjacent a piston lying in a first chamber filled with a hydraulic fluid. A second chamber in communication with said first chamber houses a smaller diameter piston having an actuating rod disposed from one side. An accordion-like chamber adjacent the rod seal protects the seal from dust or damage.
Inventors
- 👤 Alvin S Blum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:45
CPC Classifications
F; F15; F15B; F15B7/00; H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/13
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
81 words
An electro-mechanical actuating device responsive to an electrical current for providing a uniform, longer duration actuating stroke comprising: a solenoid; an electrical current means coupled to said solenoid for actuating said solenoid armature; a means connected to said armature for storing mechanical energy; a fluid actuated linear motion translating means connected to said energy storage means for translating said stored energy received from said solenoid armature movement into uniform linear motion; a connector means connected to said fluid actuated translating means.
Claim 2
Dependent Claim
81 words
An electro-mechanical actuating device responsive to an electrical current for providing a uniform, longer duration actuating stroke comprising: a solenoid; an electrical current means coupled to said solenoid for actuating said solenoid armature; a means connected to said armature for storing mechanical energy; a fluid actuated linear motion translating means connected to said energy storage means for translating said stored energy received from said solenoid armature movement into uniform linear motion; a connector means connected to said fluid actuated translating means.
Claim 3
Dependent Claim
30 words
An actuatiNg device, as in claim 1, including: means coupled to said translating means for adjustably varying the rate at which mechanical energy is translated from said energy storage means.
Claim 4
Dependent Claim
108 words
An actuating device, as in claim 1, wherein: said fluid actuating translating means includes a hydraulic closed system including a first chamber, a second chamber in fluid communication with said first chamber, a movable first piston coupled within said first chamber forming a sealed closure along one end of said first chamber, a second movable piston coupled within said second chamber, a fluid medium disposed within said first chamber and said second chamber communicating therebetween, said first chamber having a different piston surface area than said second chamber piston area, said first piston being coupled to said mechanical energy storage means, connector means coupled to said second piston.
Claim 5
Dependent Claim
15 words
An actuating device, as in claim 3, wherein: said energy storage means is a spring.
Claim 6
Independent Claim
162 words
A device for converting a high force, short distance, short duration, non-uniform motion of a solenoid to a relatively lower force, longer distance, longer duration, more uniform and adjustable motion along an actuating rod comprising: a solenoid; control means coupled to said solenoid providing energization of said solenoid; a spring coupled to said solenoid, said solenoid having an armature movable in a linear direction, said spring coupled to said end face of said armature; a hydraulic system including a first hydraulic chamber, a first piston movably disposed within said chamber, said first piston coupled to said spring, a second chamber, a second piston disposed within said chamber, said first chamber and said second chamber within fluid communication, an actuating rod coupled to said second piston, said rod responsive to the motion of said second piston which is actuated by movement of said first piston within said first chamber in response to mechanical energy stored in said spring received from said solenoid armature.
Claim 7
Independent Claim
162 words
A device for converting a high force, short distance, short duration, non-uniform motion of a solenoid to a relatively lower force, longer distance, longer duration, more uniform and adjustable motion along an actuating rod comprising: a solenoid; control means coupled to said solenoid providing energization of said solenoid; a spring coupled to said solenoid, said solenoid having an armature movable in a linear direction, said spring coupled to said end face of said armature; a hydraulic system including a first hydraulic chamber, a first piston movably disposed within said chamber, said first piston coupled to said spring, a second chamber, a second piston disposed within said chamber, said first chamber and said second chamber within fluid communication, an actuating rod coupled to said second piston, said rod responsive to the motion of said second piston which is actuated by movement of said first piston within said first chamber in response to mechanical energy stored in said spring received from said solenoid armature.
Claim 8
Dependent Claim
22 words
A device, as in claim 5, including: means coupled to said hydraulic system for variably adjusting the velocity of said second piston.
Claim 9
Dependent Claim
21 words
A device, as in claim 5, including: a means coupled to said rod for adjusting the distance movable of said rod.
Claim 10
Dependent Claim
47 words
A device, as in claim 5, including: a latching means coupled to one side of said spring to prevent spring movement toward said armature after the control signal to said solenoid has passed; and latch control means connected to said latching means for controlling the latching means.
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) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |