US4403204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torque motor
Assignee: Cinch Connectors Inc
•
Filing: 1982-01-15
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Granted: 1983-09-06
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Expires: 2002-01-15
Abstract
Abstract A flat armature type of torque motor includes integral transversely extending ledges formed on the pole pieces adjacent the working air gaps, and rigid non-magnetic spacer pins extending between the ledges and retained by integral portions formed on the coil bobbins for accurately maintaining the spaced-apart relationship of the pole pieces.
Inventors
- 👤 James R. Crawshaw
- 👤 David W. Mossbarger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:37
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
79 words
In a torque motor having spaced poles defining an armature gap therebetween and an armature normally centered in the space between the poles, the improvement comprising: means on each of said poles defining spaced ledge portions extending outwardly of the poles away from said gap and small rigid spacer means of precise length extending between said ledge portions adjacent said armature for maintaining said gap at a fixed dimension upon the application of a magnetic flux to said poles.
Claim 2
Dependent Claim
79 words
In a torque motor having spaced poles defining an armature gap therebetween and an armature normally centered in the space between the poles, the improvement comprising: means on each of said poles defining spaced ledge portions extending outwardly of the poles away from said gap and small rigid spacer means of precise length extending between said ledge portions adjacent said armature for maintaining said gap at a fixed dimension upon the application of a magnetic flux to said poles.
Claim 3
Dependent Claim
14 words
The torque motor of claim 1 in which said spacer means comprise non-magnetic pins.
Claim 4
Dependent Claim
105 words
In a torque motor having pairs of spaced pole pieces defining armature air gaps and an armature extending between said pole pairs with the ends thereof in said gaps, the improvement comprising: means on each of said pole pieces defining integral transversely extending ledges, with the ledges of opposite pole pieces being in juxtaposition adjacent said gaps, coil bobbins having portions received between said ledges, and pins carried in each said bobbin portions having the ends thereof in abutment with said ledges for maintaining said gaps at a fixed minimum dimension upon the application of high magnetic flux to said pole pieces across said gaps.
Claim 5
Dependent Claim
105 words
In a torque motor having pairs of spaced pole pieces defining armature air gaps and an armature extending between said pole pairs with the ends thereof in said gaps, the improvement comprising: means on each of said pole pieces defining integral transversely extending ledges, with the ledges of opposite pole pieces being in juxtaposition adjacent said gaps, coil bobbins having portions received between said ledges, and pins carried in each said bobbin portions having the ends thereof in abutment with said ledges for maintaining said gaps at a fixed minimum dimension upon the application of high magnetic flux to said pole pieces across said gaps.
Claim 6
Dependent Claim
20 words
The torque motor of claim 3 in which said bobbin portions are formed as integral rectangular extensions of said bobbin.
References Cited (Backward Citations)
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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) | 1986-09-05 | 1987-03-07 | 1987-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-05 | 1991-03-07 | 1991-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-05 | 1995-03-07 | 1995-09-06 | $7700.00 | Window Closed / Lapsed |