Patent US6440644B1 successfully refreshed from Google Patents.
Patent US3771083A successfully refreshed from Google Patents.
US3771083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetically operable multiple reed contact
Assignee: International Standard Electric Corp
•
Filing: 1972-08-29
•
Granted: 1973-11-06
•
Expires: 1992-08-29
Abstract
Abstract In this multiple, magnetically-operable bistable reed arrangement, the reed tube contains two electrically separated, polarized contact sets each of which consists of two contact arms and an armature permanently connected to and magnetically separated from one of the contact arms. The respective associated contact arms are brought out as contact terminals at the same end of the reed tube and form, inside the reed tube, a magnetic operating air gap along with the free end of the armature, which projects into the space between the contact arms. Each of the armatures is suspended from one of the two associated contact arms by a non-magnetic spring, with the armatures being so arranged as to overlap each other considerably in order to mutually assist each other in their magnetic coupling when the operating coil is excited.
Inventors
- 👤 G Wessel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:51
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/28; H01H51/284
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
138 words
A magnetically operable multiple reed contact in which several contacts with contact elements of different lengths are arranged in a common reed tube and in which the operating air gaps of the contact sets contained in the reed tube are located in different planes intersecting the longitudinal axis of the reed tube, characterized in that the reed tube contains two electrically separated, polarized contact sets, each of which consists of two contact arms and one armature permanently connected to and magnetically separated from an end of one of said contact arms, with each pair of contact arms brought out as contact terminals at the same end of the reed tube and forming, inside the reed tube, a magnetic operating air gap along with the free end of the armature, which projects into the space between the contact arms.
Claim 2
Dependent Claim
138 words
A magnetically operable multiple reed contact in which several contacts with contact elements of different lengths are arranged in a common reed tube and in which the operating air gaps of the contact sets contained in the reed tube are located in different planes intersecting the longitudinal axis of the reed tube, characterized in that the reed tube contains two electrically separated, polarized contact sets, each of which consists of two contact arms and one armature permanently connected to and magnetically separated from an end of one of said contact arms, with each pair of contact arms brought out as contact terminals at the same end of the reed tube and forming, inside the reed tube, a magnetic operating air gap along with the free end of the armature, which projects into the space between the contact arms.
Claim 3
Dependent Claim
26 words
The reed contact according to claim 1 wherein each of the armatures is suspended from one of two associated contact arms by means of non-magnetic springs.
Claim 4
Dependent Claim
28 words
The reed contact according to claim 2 wherein a permanent magnet is located at each of the two ends of the reed tube between the associated contact terminals.
Claim 5
Dependent Claim
26 words
The reed contact according to claim 3 further including a common permanent magnet for polarizing several contact sets arranged side by side in different reed tubes.
Claim 6
Dependent Claim
14 words
The reed contact according to claim 2 wherein the armature is a permanent magnet.
Claim 7
Dependent Claim
27 words
The reed contact according to claim 1 wherein the two contact sets are arranged within a reed tube to mutually assist each other in their magnetic coupling.
Claim 8
Dependent Claim
34 words
The reed contact according to claim 6 wherein the armatures of the two contact sets are arranged in the reed tube side by side and with a large oVerlap and are closely spaced apart.
Claim 9
Dependent Claim
51 words
The reed contact according to claim 2 wherein at the free contact arm there is provided a non-magnetic, resilient contact maker whose contact area, directed toward the armature lies closer to the contact-making end of the armature than the contact area of the magnetically conducting free contact arm, facing the armature.
Claim 10
Dependent Claim
29 words
The reed contact according to claim 1 wherein the associated contact terminals are interconnected by a U-shaped piece, which is detachable outside the reed tube after the sealing operation.
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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |