US3836879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual reversing solenoid operated switch
Assignee: NORCO SALES AND Mfg CO
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Filing: 1973-10-15
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Granted: 1974-09-17
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Expires: 1993-10-15
Abstract
Abstract A reversing solenoid operated switch unit has a single central plunger which carries two heavy gage copper contact discs. Facing opposite surfaces of each disc are pair of diametrically spaced heavy duty electrical contact shoulders at locations adapted to be contacted by and interconnected by the adjacent disc as each disc moves axially from one pair of shoulders to the other, thereby to periodically reverse the flow in each of two circuits.
Inventors
- 👤 D Frye
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:32
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/02; H01H51/04; H01H51/12; H01H1/00; H01H1/12; H01H1/14; H01H1/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
190 words
A reversing switch unit comprising a housing having chambers at opposite ends, a partition between the chambers and a bore through the partition interconnecting the chamber, a solenoid in each chamber having a central axial bore and a single plunger assembly extending between the solenoids and through said bore, said plunger assembly comprising a guide portion intermediate the ends having a slidable engagement with said bore and end portions having slidable engagements with the bores of the respective soldenoids, a contact disc in each chamber and mounted on that portion of the plunger assembly which is located in the respective chamber, a pair of diametrically spaced contact shoulder members mounted in each chamber on the side of the respective contact disc adjacent the solenoid and a second pair of diametrically spaced contact shoulder members mounted in each chamber on the side of the respective contact disc remote from the solenoid, the pairs of contact shoulder members in each chamber being spaced axially from each other so that movement of the respective contact disc in an axial direction alTernately interconnects the contact shoulder members of each pair of said shoulder member.
Claim 2
Dependent Claim
190 words
A reversing switch unit comprising a housing having chambers at opposite ends, a partition between the chambers and a bore through the partition interconnecting the chamber, a solenoid in each chamber having a central axial bore and a single plunger assembly extending between the solenoids and through said bore, said plunger assembly comprising a guide portion intermediate the ends having a slidable engagement with said bore and end portions having slidable engagements with the bores of the respective soldenoids, a contact disc in each chamber and mounted on that portion of the plunger assembly which is located in the respective chamber, a pair of diametrically spaced contact shoulder members mounted in each chamber on the side of the respective contact disc adjacent the solenoid and a second pair of diametrically spaced contact shoulder members mounted in each chamber on the side of the respective contact disc remote from the solenoid, the pairs of contact shoulder members in each chamber being spaced axially from each other so that movement of the respective contact disc in an axial direction alTernately interconnects the contact shoulder members of each pair of said shoulder member.
Claim 3
Dependent Claim
82 words
A reversing switch unit as in claim 1 wherein the housing comprises a central section including said partition and having axially opposite facing recesses in communication with respective chambers, one pair of said contact shoulder members being mounted in each recess, said housing comprising cap sections each including a portion of the respective chamber therein and another pair of said contact shoulder members mounted in each cap section, said cap sections being releasably attached to the respective side of said central section.
Claim 4
Dependent Claim
22 words
A reversing switch unit as in claim 2 wherein there is a compression spring located between each contact disc and the partition.
Claim 5
Dependent Claim
69 words
A reversing switch unit as in claim 1 wherein each contact shoulder member comprises a stud threaded on the exterior end extending through the wall of the housing and a lug at the interior end projecting into the recess and having a portion of each lug facing the disc depressed and comprising a contact surface throughout its length and width in position adapted for contact by said contact disc.
Claim 6
Dependent Claim
50 words
A reversing switch unit as in claim 1 wherein the plunger assembly comprises a mid-section slidably mounted in said bore and opposite end sections, each end section being in slidable engagement with the respective solenoid, the end sections having each a releasable telescopic engagement with and attached to the mid-section.
Claim 7
Dependent Claim
78 words
A reversing switch unit as in claim 1 wherein the central bore of each solenoid is adapted to receive a respective end of said plunger assembly and a fastening stud having a shank in the bore of the outwardly located end of each solenoid and extending through the housing in axial alignment with said plunger and the solenoids whereby to fasten the solenoids in the housing in axial alignment and provide a ground connection for the respective solenoid.
Claim 8
Dependent Claim
58 words
A reversing switch unit as in claim 1 wherein said contact shoulder members are each provided with a lug at the inner end and said chambers each comprise cylindrical side walls, said walls having radially outwardly extending pockets for said lugs, said contact shoulder members being releasably secured to the housing with the lugs in the respective pockets.
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) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |