US3978439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relay construction
Assignee: Individual
•
Filing: 1975-06-09
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Granted: 1976-08-31
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Expires: 1995-06-09
Abstract
Abstract A relay comprising a small, flat, rectangular, dielectric housing. A coil mounted in the center of the housing. A U-shaped steel armature at the rear end of the coil having a central arm extending into the coil approximately half way through. A U-shaped steel armature mounted in a teflon slide at the front end of the coil and having a central arm extending into the coil approximately, 0.020 inch from the rear arm. The teflon slide being slidable along the rear armature side arms against the action of a leaf spring. A pair of contact prongs extending from the front of the housing and having integral portions in the housing bent at right angles toward each side and then bent again toward the rear. A movable contact arm extending rearwardly from each inner prong arm toward a rear contact at each rear corner of the housing. The movable contact arms being normally spaced from the rear contacts approximately 0.018 inch. Each contact arm has an enlarged annular portion at the center. Each side of the teflon slide has a teflon roll contacting the annular portions at 45°, whereby, when the coil is energized, the front armature will be pulled rearwardly 0.020 inch with the teflon slide and the teflon rolls will cause the contact arms to move outwardly to close the contacts. Conversely, when the coil is then de-energized, the leaf spring will slide the armature into open position opening the contacts.
Inventors
- 👤 Arthur J. Thomson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:11
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/16; H01H50/18; H01H50/20; H01H50/22; H01H51/00; H01H51/02; H01H51/04; H01H51/06
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
204 words
A relay comprising a flat, rectangular, dielectric housing having front, rear, and side walls, a pair of contact prongs extending forwardly through said front wall, a pair of contact arms extending rearwardly through said rear wall, a fixed contact element in said housing at the inner end of each of said contact arms, a movable contact element adjacent each of said fixed contact elements with a narrow gap therebetween, each said movable contact elements being mounted on a movable conductor arm, each movable conductor arm being mounted on the inner end of one of said contact prongs, a coil mounted in said housing, a fixed armature at the rear end of said coil, a movable armature at the front end of said coil, means for biasing said movable armature away from said fixed armature, said movable armature moving rearwardly into contact with said fixed armature when said coil is energized, and means associated with said movable armature for moving said movable conductor arms to close the gap between said contact elements when said coil is energized, said biasing means moving said movable armature away from said fixed armature to allow said conductor arms to move said contact elements apart when said coil is de-energized.
Claim 2
Dependent Claim
204 words
A relay comprising a flat, rectangular, dielectric housing having front, rear, and side walls, a pair of contact prongs extending forwardly through said front wall, a pair of contact arms extending rearwardly through said rear wall, a fixed contact element in said housing at the inner end of each of said contact arms, a movable contact element adjacent each of said fixed contact elements with a narrow gap therebetween, each said movable contact elements being mounted on a movable conductor arm, each movable conductor arm being mounted on the inner end of one of said contact prongs, a coil mounted in said housing, a fixed armature at the rear end of said coil, a movable armature at the front end of said coil, means for biasing said movable armature away from said fixed armature, said movable armature moving rearwardly into contact with said fixed armature when said coil is energized, and means associated with said movable armature for moving said movable conductor arms to close the gap between said contact elements when said coil is energized, said biasing means moving said movable armature away from said fixed armature to allow said conductor arms to move said contact elements apart when said coil is de-energized.
Claim 3
Dependent Claim
21 words
A relay as in claim 1, wherein said movable conductor arms comprise doubled strips of phosphor bronze with suitable contact elements.
Claim 4
Dependent Claim
26 words
A relay as in claim 1, wherein said biasing means comprises a leaf spring mounted transversely in said housing adjacent the rear end of said coil.
Claim 5
Dependent Claim
136 words
A relay as in claim 1, wherein said fixed armature comprises a steel member having a transverse arm across the rear end of said coil and three spaced parallel integral arms extending at right angles, the outer arms being on the outside of said coil and the central arm extending into said coil, said arms being approximately half the length of said coil, and wherein said movable armature comprises a steel member having a transverse arm across the front end of said coil and three spaced parallel integral arms extending at right angles, the outer arms being on the outside of said coil and the central arm extending into said coil, the ends of said movable armature arms being spaced approximately 0.020 inch from the ends of said fixed armature arms when said coil is de-energized.
Claim 6
Dependent Claim
19 words
A relay as in claim 1, wherein said movable armature is mounted in a generally U-shaped teflon slide member.
Claim 7
Dependent Claim
24 words
A relay as in claim 5, wherein said teflon slide member is provided with grooves slidable on the side edges of the fixed armature.
Claim 8
Dependent Claim
33 words
A relay as in claim 1, wherein brass input and brass coil terminals extend from said housing, whereby a printed circuit board may be mounted on said housing in circuit with said relay.
Claim 9
Dependent Claim
26 words
A relay as in claim 2, wherein said biasing means comprises a leaf spring mounted transversely in said housing adjacent the rear end of said coil.
Claim 10
Dependent Claim
37 words
A relay as in claim 4, wherein said biasing means comprises a leaf spring mounsted transversely in said housing adjacent the rear end of said coil, the ends of said leaf spring bearing against said movable armature.
Claim 11
Dependent Claim
21 words
A relay as in claim 4, wherein said movable conductor arms comprise doubled strips of phosphor bronze with suitable contact elements.
Claim 12
Dependent Claim
37 words
A relay as in claim 10, wherein said biasing means comprises a leaf spring mounted transversely in said housing adjacent the rear end of said coil, the ends of said leaf spring bearing against said movable armature.
Claim 13
Dependent Claim
19 words
A relay as in claim 4, wherein said movable armature is mounted in a generally U-shaped teflon slide member.
Claim 14
Dependent Claim
24 words
A relay as in claim 12, wherein said teflon slide member is provided with grooves slidable on the side edges of said fixed armature.
Claim 15
Dependent Claim
19 words
A relay as in claim 11, wherein said movable armature is mounted in a generally U-shaped teflon slide member.
Claim 16
Dependent Claim
24 words
A relay as in claim 14, wherein said teflon slide member is provided with grooves slidable on the side edges of said fixed armature.
Claim 17
Dependent Claim
19 words
A relay as in claim 8, wherein said movable armature is mounted in a generally U-shaped teflon slide member.
Claim 18
Dependent Claim
24 words
A relay as in claim 16, wherein said teflon slide member is provided with grooves slidable on the side edges of said fixed armature.
Claim 19
Dependent Claim
44 words
A relay as in claim 16, wherein said moving means comprises a teflon roll member in each side of said slide, an enlarged bump area in each of said movable contact arms, said rolls contacting said bumps during the movement of said movable armature.
Claim 20
Dependent Claim
24 words
A relay as in claim 18, wherein said teflon slide member is provided with grooves slidable on the side edges of said fixed armature.
Claim 21
Dependent Claim
33 words
A relay as in claim 19, wherein brass input and brass coil terminals extend from said housing, whereby a printed circuit board may be mounted on said housing in circuit with said relay.
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) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |