Patent US4831350A successfully refreshed from Google Patents.
US4831350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary shaft position reed switch
Assignee: DWYER ACQUISITION Inc
•
Filing: 1987-11-30
•
Granted: 1989-05-16
•
Expires: 2007-11-30
Abstract
Abstract A switch for providing signals indicating the position of a rotary shaft has an enclosed switch chamber. Within the chamber is at least one magnetically actuated switch device. A switch actuating magnet is mounted in a holder exterior of the chamber and coupled to the switch through a wall of the switch housing. The holder is flexibly mounted to the housing and connected to the rotary shaft. The magnet is held in a constant rotational plane with respect to the switch.
Inventors
- 👤 John F. Rose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:00
CPC Classifications
H; H01; H01H; H01H36/00; H01H36/0006; F; F16; F16K; F16K37/00; F16K37/0025; F16K37/0033; F16K37/0041; H01H9/00; H01H9/02; H01H9/04; H01H9/042
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
124 words
A rotary shaft position indicator and control, comprising, (a) a housing defining a switch chamber; (b) magnetically actuated switch means disposed within said switch chamber for providing indicator or control signals; (c) switch actuating means exterior of said housing, said switch actuating means comprising: (i) a magnet holder; (ii) flexible means for mounting said magnet holder to said housing for rotation about an axis, said mounting means permitting said rotational axis to misalign angularly with respect to an axis perpendicular to a wall of said housing; (iii) a magnet disposed on said holder; (iv) means for maintaining said magnet in a constant rotational plane with respect to said magnetically actuated switch means; (d) means for connecting said switch actuating means to the rotary shaft.
Claim 2
Dependent Claim
124 words
A rotary shaft position indicator and control, comprising, (a) a housing defining a switch chamber; (b) magnetically actuated switch means disposed within said switch chamber for providing indicator or control signals; (c) switch actuating means exterior of said housing, said switch actuating means comprising: (i) a magnet holder; (ii) flexible means for mounting said magnet holder to said housing for rotation about an axis, said mounting means permitting said rotational axis to misalign angularly with respect to an axis perpendicular to a wall of said housing; (iii) a magnet disposed on said holder; (iv) means for maintaining said magnet in a constant rotational plane with respect to said magnetically actuated switch means; (d) means for connecting said switch actuating means to the rotary shaft.
Claim 3
Dependent Claim
50 words
A rotary shaft position indicator and control in accordance with claim-L wherein said connecting means further comprises means for flexibly coupling the rotary shaft to said switch actuating means whereby the rotational axis of the rotary shaft may be misaligned with respect to the rotational axis of said switch actuating
Claim 4
Dependent Claim
24 words
A rotary shaft position indicator and control in accordance with claim 1 wherein said magnetically activated switch means comprises at least one reed switch.
Claim 5
Dependent Claim
34 words
A rotary shaft position indicator an control in accordance with claim 1 wherein said magnet holder comprises a plurality of magnet retaining members spaced apart angularly about said rotational axis of said magnet holder.
Claim 6
Dependent Claim
39 words
A rotary shaft position indicator and control in accordance with claim 1 wherein said magnet holder is mounted to a wall of said housing whereby said magnet is magnetically coupled through said wall to said magnetically actuated switch means.
Claim 7
Dependent Claim
55 words
The rotary shaft position indicator and control in accordance with claim 5 wherein said means for maintaining said magnet in a constant rotational plane comprises a spring retained within said magnet holder and biasing said magnet against said wall whereby said magnet is in a rotational plane perpendicular to an axis normal to said wall.
Claim 8
Dependent Claim
159 words
A rotary shaft position indicator and control comprising: (a) a housing defining a switch chamber; (b) at least one magnetically actuated reed switch disposed within said switch chamber for providing indicator or control signal; (c) switch actuating means disposed exterior of said housing, said switch actuating means comprising: (i) a magnet holder having a plurality of magnet receiving members disposed circumferentially about a rotational axis of said magnet holder; (ii) flexible means for mounting said magnet holder to a wall of said housing for rotation about said axis; (iii) at least one magnet disposed in at least one of said magnet receiving members whereby said magnet is coupled through said wall of said housing through said magnetically actuated reed switch; (iv) spring means for biasing said magnet against said wall to maintain said magnet in a constant rotational plane normal to an axis perpendicular to said wall; (d) means for coupling the rotary shaft to said switch actuating means.
Claim 9
Dependent Claim
159 words
A rotary shaft position indicator and control comprising: (a) a housing defining a switch chamber; (b) at least one magnetically actuated reed switch disposed within said switch chamber for providing indicator or control signal; (c) switch actuating means disposed exterior of said housing, said switch actuating means comprising: (i) a magnet holder having a plurality of magnet receiving members disposed circumferentially about a rotational axis of said magnet holder; (ii) flexible means for mounting said magnet holder to a wall of said housing for rotation about said axis; (iii) at least one magnet disposed in at least one of said magnet receiving members whereby said magnet is coupled through said wall of said housing through said magnetically actuated reed switch; (iv) spring means for biasing said magnet against said wall to maintain said magnet in a constant rotational plane normal to an axis perpendicular to said wall; (d) means for coupling the rotary shaft to said switch actuating means.
References Cited (Backward Citations)
US3128909A
Cited
US780770A
Cited
US1767617A
Cited
US1708276A
Cited
US1989522A
Cited
US2241983A
Cited
US2564676A
Cited
US2651550A
Cited
US2725439A
Cited
US2915606A
Cited
US2966330A
Cited
GB1040571A
Cited
US3224295A
Cited
US3315523A
Cited
US3503024A
Cited
GB1205145A
Cited
US3538948A
Cited
GB1324027A
Cited
GB1291579A
Cited
US3747892A
Cited
US3743872A
Cited
US3791620A
Cited
US3825781A
Cited
US4214133A
Cited
US4225837A
Cited
US4518940A
Cited
US4544903A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-15 | 1992-11-14 | 1993-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-15 | 1996-11-14 | 1997-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-15 | 2000-11-14 | 2001-05-16 | $7700.00 | Window Closed / Lapsed |