Patent US3697943A successfully refreshed from Google Patents.
US3697943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Installation for indicating the closing condition of vehicle doors, especially of motor vehicle doors
Assignee: Daimler Benz AG
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Filing: 1969-12-11
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Granted: 1972-10-10
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Expires: 1989-12-11
Abstract
Abstract An installation for indicating the closing condition of vehicle doors, especially of motor vehicle doors, in which lines are provided that are connected to a vacuum source and terminate within the area of the doors; the lines are in communication with the atmosphere in case a door is not completely closed but are closed with respect to the atmosphere in case all doors are completely closed; a warning device is provided which in turn is actuated by the pressure in the lines.
Inventors
- 👤 Rudolf Andres
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:14
CPC Classifications
B; B60; B60R; B60R16/00; B60R16/02; B60R16/037; E; E05; E05B; E05B81/00; E05B81/52; E05B81/54; E05B81/64; E05B81/70; E05B77/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
111 words
An installation for indicating the closing condition of vehicle doors, characterized in that line means are provided which are connected to a vacuum source and which terminate within the area of the doors, in that said line means are in communication with the atmosphere with a non-completely closed door and are closed off with respect to the atmosphere with completely closed doors, and in that a warning means is provided actuated in dependence on the pressure in said line means, and wherein said line means are provided with at least one throttle valve means in series with at least one check valve means disposed between said vacuum source and said doors.
Claim 2
Dependent Claim
111 words
An installation for indicating the closing condition of vehicle doors, characterized in that line means are provided which are connected to a vacuum source and which terminate within the area of the doors, in that said line means are in communication with the atmosphere with a non-completely closed door and are closed off with respect to the atmosphere with completely closed doors, and in that a warning means is provided actuated in dependence on the pressure in said line means, and wherein said line means are provided with at least one throttle valve means in series with at least one check valve means disposed between said vacuum source and said doors.
Claim 3
Dependent Claim
20 words
An installation according to claim 1, characterized in that said line means terminate within the area of motor vehicle doors.
Claim 4
Dependent Claim
22 words
An installation according to claim 1, characterized in that the suction pipe of an internal combustion engine serves as a vacuum source.
Claim 5
Dependent Claim
32 words
An installation according to claim 3, further comprising a vacuum-responsive switch operating against the force of a spring and responsive to the vacuum in said line means for actuating said warning means.
Claim 6
Dependent Claim
30 words
An installation according to claim 4, further comprising rubber seal means against which the ends of the line means terminate at the location where the end of the door-side closes.
Claim 7
Dependent Claim
33 words
An installation according to claim 1, further comprising a vacuum responsive switch operating against the force of a spring and responsive to the vacuum in said line means for actuating said warning means.
Claim 8
Dependent Claim
29 words
An installation with a rotating machinery producing electric power according to claim 6, characterized in that said electric switch is in a circuit directly connected to said rotating machinery.
Claim 9
Dependent Claim
30 words
An installation according to claim 1, further comprising rubber seal means against which the ends of the line means terminate at the location where the end of the door-side closes.
Claim 10
Independent Claim
157 words
An apparatus for indicating the closing condition of vehicle doors, comprising: first means having a passage therethrough for conducting a fluid therethrough; second means disposed at each respective location where each door is normally closed, for preventing the entry of fluid from the atmosphere into said first means when each respective door is closed; third means, connected to said first means for imparting thereto a pressure negative with respect to the atmosphere external to said door; and fourth means, coupled to said first means and responsive to the pressure therein for generating a warning signal representative of the incomplete closure of one of said doors, and wherein said first means comprises a fluid conducting line connected with each door and wherein said second means comprises a rubber seal installed at each door at the location where the fluid line terminates with respect to each door to close the ends of the line when the door is closed.
Claim 11
Independent Claim
157 words
An apparatus for indicating the closing condition of vehicle doors, comprising: first means having a passage therethrough for conducting a fluid therethrough; second means disposed at each respective location where each door is normally closed, for preventing the entry of fluid from the atmosphere into said first means when each respective door is closed; third means, connected to said first means for imparting thereto a pressure negative with respect to the atmosphere external to said door; and fourth means, coupled to said first means and responsive to the pressure therein for generating a warning signal representative of the incomplete closure of one of said doors, and wherein said first means comprises a fluid conducting line connected with each door and wherein said second means comprises a rubber seal installed at each door at the location where the fluid line terminates with respect to each door to close the ends of the line when the door is closed.
Claim 12
Dependent Claim
61 words
An apparatus according to claim 9, wherein said fourth means comprises an electric switch, an indicator and a source of power for energizing said indicator connected in series, said switch further including vacuum-responsive switch means and spring mechanism for normally maintaining said switch open in response to the pressure in said lines corresponding to the closure in each of said doors.
Claim 13
Dependent Claim
33 words
An apparatus according to claim 10, wherein said third means comprises a check valve and throttle valve connected in series between the suction pipe of an internal combustion engine and said conducting line.
Claim 14
Dependent Claim
24 words
An apparatus according to claim 10, wherein the fluid conductive line for each respective door is connected in parallel to said vacuum-responsive switch means.
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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |