US3973443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Timing relay having an electric motor device
Assignee: Siemens AG
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Filing: 1975-04-24
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Granted: 1976-08-10
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Expires: 1995-04-24
Abstract
Abstract In a timing relay including an indexing gear wheel driven by a clutched gear wheel which is driven by an electric motor and in which an actuating element is controlled by means of a cam coupled to the indexing gear wheel with the actuating element being used to operate contact elements on displacement thereof, the actuating element is disposed parallel to the indexing gear wheel and is also arranged to control engagement and disengagement of the clutched gear wheel with the indexing gear wheel.
Inventors
- 👤 Alois Muhling
- 👤 Helmut Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:44
CPC Classifications
G; G04; G04F; G04F3/00; G04F3/06; Y; Y10; Y10T; Y10T74/00; Y10T74/11; Y10T74/114; Y10T74/21; Y10T74/2101; Y10T74/2102; Y10T74/2106
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
196 words
In a timing relay having an electric motor drive in which a clutched gear wheel is driven through gears by the relay motor and engages an indexing gear wheel through a shifting of its drive shaft on switching on of the timing relay and is disengaged after a predetermined delay time has expired, and which timing relay includes means for the delayed actuation of at least one switching contact, said means comprising a displaceably arranged actuating element coupled by a spring to the armature of a solonoid with the displacement of the actuation element controlled by the indexing gear wheel, the improvement comprising: a. the actuating element and the indexing gear wheel arranged in parallel planes one over the other; b. means on said actuating element for causing the engagement and disengagement of said clutched gear wheel with said indexing gear wheel; c. means causing said actuating element to be displaced a first distance in one direction to cause engagement of said clutched gear wheel upon actuation of the armature; and d. means to cause said actuation element to be displaced a further distance in the same direction upon the expiration of the predetermined delay time.
Claim 2
Dependent Claim
196 words
In a timing relay having an electric motor drive in which a clutched gear wheel is driven through gears by the relay motor and engages an indexing gear wheel through a shifting of its drive shaft on switching on of the timing relay and is disengaged after a predetermined delay time has expired, and which timing relay includes means for the delayed actuation of at least one switching contact, said means comprising a displaceably arranged actuating element coupled by a spring to the armature of a solonoid with the displacement of the actuation element controlled by the indexing gear wheel, the improvement comprising: a. the actuating element and the indexing gear wheel arranged in parallel planes one over the other; b. means on said actuating element for causing the engagement and disengagement of said clutched gear wheel with said indexing gear wheel; c. means causing said actuating element to be displaced a first distance in one direction to cause engagement of said clutched gear wheel upon actuation of the armature; and d. means to cause said actuation element to be displaced a further distance in the same direction upon the expiration of the predetermined delay time.
Claim 3
Dependent Claim
115 words
Apparatus according to claim 1 wherein said means for causing comprise first and second projections on the side of said actuating element, said projections having internal angled faces oppositly directed with a gap therebetween and a coupling spring urging said drive shaft into the gap between said projections said projections located so that prior to said first displacement, said drive shaft will rest against one of said faces holding said clutched gear wheel out of engagement, after said first displacement said drive shaft will rest in the gap between said projections permitting engagement, and after said second displacement said drive shaft will rest on the other face moving said clutched gear wheel out of engagement.
Claim 4
Dependent Claim
125 words
Apparatus according to claim 1 wherein means are provided to limit the position of said actuating element prior to energization and wherein said means causing said first displacement comprise: a. a spring coupling said actuating element to the armature of said solonoid; b. a cam coupled to said indexing gear wheel; c. a dog coupled to said actuating element engaging said cam; said dog and cam establishing a limit of travel for said first displacement and wherein said means for obtaining said second displacement comprise: d. a notch in said cam, whereby after the expired delay time during which said cam rotates, said dog will engage in said notch to permit additional displacement, the degree of displacement being limited by the depth of said notch.
Claim 5
Dependent Claim
38 words
Apparatus according to claim 2 wherein said first and second projections are contained on arm coupled to said actuating element and further including means for adjusting the lateral position of said arm with respect to said drive shaft.
Claim 6
Dependent Claim
41 words
Apparatus according to claim 4 wherein said actuating element contains a plurality of switching arms corresponding to the number of contacts to be switched and further including means for adjusting said switching arms in the displacement direction of said actuation element.
Claim 7
Dependent Claim
27 words
Apparatus according to claim 5 and further including an additional contact element and means coupled to the armature of said solonoid for directly actuating said contact element.
Claim 8
Dependent Claim
53 words
Apparatus according to claim 5 and further including a pawl pivoted about an axis, said pawl containing means cooperating with said armature to lock said armature in the on position during the predetermined delay time, and means on said actuation element for unlocking said pawl at the end of said predetermined delay time.
Claim 9
Dependent Claim
24 words
Apparatus according to claim 7 wherein said means for unlocking comprise a projection on said pawl and an unlocking dog on said actuation element.
Claim 10
Dependent Claim
33 words
Apparatus according to claim 7 wherein said pawl includes a shaft about which it rotates, said shaft being supported in a half-shell bearing depression in a bearing plate fixed relative to the housing.
Claim 11
Dependent Claim
21 words
Apparatus according to claim 1 and further including an indicating device for indicating the different operational states of said timing relay.
Claim 12
Dependent Claim
99 words
Apparatus according to claim 10 wherein said indicating device comprises: a. at least one viewing aperture on the front portion of said relay; b. an indicator arm coupled to the actuating element and containing thereon two different marking symbols one behind the other in the displacement direction, said arm being arranged with respect to said viewing aperture such that prior to actuation neither of said symbols are aligned therewith, after said first displacement one of said symbols is aligned with said viewing aperture, and after said second displacement the other of said symbols is aligned with said viewing aperture.
References Cited (Backward Citations)
US3747420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-10 | 1980-02-09 | 1980-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-10 | 1984-02-09 | 1984-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-10 | 1988-02-09 | 1988-08-10 | $7700.00 | Window Closed / Lapsed |