US3223802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solenoid having a two-piece armature
Assignee: Schulz Tool and Manufacturing Co
•
Filing: 1963-06-14
•
Granted: 1965-12-14
•
Expires: 1983-06-14
Abstract
No abstract record available.
Inventors
- 👤 Gunter H Horst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:59
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/13; H01F7/121; H01F7/124; H01H; H01H50/00; H01H50/16; H01H50/18; H01H50/20; H01H51/00; H01H51/02; H01H51/04; H01H51/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
A SOLENOID PROVIDING, WHEN ENERGIZED, A RELATIVELY LARGE FORCE DURING THE INITIAL PORTION OF MOVEMENT OF ITS ARMATURE AND A RELATIVELY SMALL FORCE DURING THE REMAINING PORTION OF MOVEMENT OF ITS ARMATURE TO OVERCOME AN INITIAL LARGE RESISTANCE TO THE ARMATURE MOVEMENT, SAID SOLENOID COMPRISING: (A) A SINGLE SOLENOID HAVING A WINDING ADAPTED TO BE ENERGIZED AND OF CYLINDRICAL SHAPE PROVIDING A HOLLOW INTERIOR SPACE AND HAVING AT LEAST ONE FLAT SURFACE; (B) A MOVABLE ARMATURE FOR SAID SOLENOID AND ADAPTED TO BE ATTRACTED BY SAID SOLENOID WINDING WHEN SAID WINDING IS ENERGIZED, SAID ARMATURE INCLUDING (1) A DISC-SHAPED FLAPPER DISPOSED ADJACENT ONE OF THE FLAT SURFACES OF SAID WINDING AND ADAPTED TO BE ATTRACTED THEREBY FOR PROVIDING THE INITIAL LARGE FORCE SAID FLAPPER BEING SPACED A RELATIVELY SMALL DISTANCE FROM SAID SOLENOID, SAID ARMATURE FURTHER INCLUDING (2) A PLUNGER MECHANICALLY COUPLED TO SAID FLAPPER, SAID PLUNGER BEING DISPOSED IN THE INTEIROR SPACE OF SAID SOLENOID AND ADAPTED TO BE ATTRACTED THEREBY, SAID PLUNGER PROVIDING THE RELATIVELY SMALL FORCE.
Claim 2
Dependent Claim
169 words
A SOLENOID PROVIDING, WHEN ENERGIZED, A RELATIVELY LARGE FORCE DURING THE INITIAL PORTION OF MOVEMENT OF ITS ARMATURE AND A RELATIVELY SMALL FORCE DURING THE REMAINING PORTION OF MOVEMENT OF ITS ARMATURE TO OVERCOME AN INITIAL LARGE RESISTANCE TO THE ARMATURE MOVEMENT, SAID SOLENOID COMPRISING: (A) A SINGLE SOLENOID HAVING A WINDING ADAPTED TO BE ENERGIZED AND OF CYLINDRICAL SHAPE PROVIDING A HOLLOW INTERIOR SPACE AND HAVING AT LEAST ONE FLAT SURFACE; (B) A MOVABLE ARMATURE FOR SAID SOLENOID AND ADAPTED TO BE ATTRACTED BY SAID SOLENOID WINDING WHEN SAID WINDING IS ENERGIZED, SAID ARMATURE INCLUDING (1) A DISC-SHAPED FLAPPER DISPOSED ADJACENT ONE OF THE FLAT SURFACES OF SAID WINDING AND ADAPTED TO BE ATTRACTED THEREBY FOR PROVIDING THE INITIAL LARGE FORCE SAID FLAPPER BEING SPACED A RELATIVELY SMALL DISTANCE FROM SAID SOLENOID, SAID ARMATURE FURTHER INCLUDING (2) A PLUNGER MECHANICALLY COUPLED TO SAID FLAPPER, SAID PLUNGER BEING DISPOSED IN THE INTEIROR SPACE OF SAID SOLENOID AND ADAPTED TO BE ATTRACTED THEREBY, SAID PLUNGER PROVIDING THE RELATIVELY SMALL FORCE.
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) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |