US3743976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Channel selecting unit for hf telecommunication equipment
Assignee: R&E Hopt KG
•
Filing: 1970-07-01
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Granted: 1973-07-03
•
Expires: 1990-07-01
Abstract
Abstract This is a channel selecting unit for radio and television receivers which comprises preset tuning units disposed in a row one behind the other, and a slide movable in a direction parallel to the row of tuning units. The tuning units and the slide are provided with contacts and contact bridges, respectively. By selectively positioning the slide adjacent to any of said tuning units the contacts of the selected tuning units are connected by means of the said contact bridges to bus bars extending parallel to the row of tuning units and are connected to associated circuits. Further, the slide may be provided with adjusting means which may be operatively connected to the adjacent tuning unit to adjust the setting of same.
Inventors
- 👤 H Meyer
- 👤 R Mayer
- 👤 L Volkheimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:06
CPC Classifications
H; H03; H03J; H03J1/00; H03J1/06; H03J1/066
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
217 words
A channel selecting unit for HF telecommunication equipment and, more particularly, for radio and television receivers, comprising: a plurality of preset tuning units disposed in a row one behind the other, and a plurality of service switch means, coupled to each of said tuning units, for selectively providing a connection to any one of said tuning units, each of said service switch means being formed by contacts provided on said tuning units, characterized in that said channel selecting unit is provided with a slide which is movable in a direction parallel to the row of tuning units, said slide being provided with contact bridges for providing connections to the contacts of the tuning unit which is positioned adjacent to the slide, and for actuating the service switch means of a corresponding tuning unit, whenever, it is positioned adjacent to one of the tuning units, thus providing a connection thereto, and wherein band switches are associated with the individual tuning units, and being further characterized in that a plurality of contact banks are disposed parallel to the path of the slide and in that displaceable elements, which selectively force the contacts of a contact bridge away from their associated contact banks or permit them to bear against said banks, are disposed in the region of each tuning unit.
Claim 2
Dependent Claim
217 words
A channel selecting unit for HF telecommunication equipment and, more particularly, for radio and television receivers, comprising: a plurality of preset tuning units disposed in a row one behind the other, and a plurality of service switch means, coupled to each of said tuning units, for selectively providing a connection to any one of said tuning units, each of said service switch means being formed by contacts provided on said tuning units, characterized in that said channel selecting unit is provided with a slide which is movable in a direction parallel to the row of tuning units, said slide being provided with contact bridges for providing connections to the contacts of the tuning unit which is positioned adjacent to the slide, and for actuating the service switch means of a corresponding tuning unit, whenever, it is positioned adjacent to one of the tuning units, thus providing a connection thereto, and wherein band switches are associated with the individual tuning units, and being further characterized in that a plurality of contact banks are disposed parallel to the path of the slide and in that displaceable elements, which selectively force the contacts of a contact bridge away from their associated contact banks or permit them to bear against said banks, are disposed in the region of each tuning unit.
Claim 3
Dependent Claim
85 words
A channel selecting unit as claimed in claim 1, characterized in that a controller drum with cams is provided in the region of each tuning unit on the side of the contact banks facing away from the slide, the cams of said controller drum, which is disposed perpendicular to the longitudinal direction of said contact banks, projecting beyond the associated contact bank on at least one side of said contact banks in order to enable the contacts of the contact bridge to be lifted off.
Claim 4
Dependent Claim
43 words
A channel selecting unit as claimed in claim 2, characterized in that said contact banks are formed by wires and in that said controller drums are provided with flanges enclosing said wires between them, said flanges featuring segmental cut-outs to release the wires.
Claim 5
Dependent Claim
34 words
A channel selecting unit as claimed in claim 1, characterized in that the row of tuning units and the contact banks associated with the band switches are disposed on opposite sides of the slide.
Claim 6
Dependent Claim
38 words
A channel selecting unit as claimed in claim 1, characterized in that the slide is guided on a rod provided with locking grooves and in that said slide features a spring-loaded locking element engaged by said locking grooves.
Claim 7
Dependent Claim
24 words
A channel selecting unit as claimed in claim 1, characterized in that the slide is provided with a lighting arrangement for an indication window.
Claim 8
Dependent Claim
78 words
A channel selecting unit as claimed in claim 6, characterized in that said slide is provided with a mirror disposed at an angle of 45* with respect to the front of the unit and the longitudinal direction of the path along which said slide is displaced and in that a light source producing a beam which extends parallel to the direction of movement of said slide and hits said mirror is provided at one end of the unit.
Claim 9
Dependent Claim
67 words
A channel selecting unit as claimed in claim 1, characterized in that the tuning units have tuning spindles which carry pointers and extend parallel to the front of the unit and perpendicular to the direction of movement of the slide and in that said slide is provided with a scale which in the operative positions of said slide coincides with the pointer on the associated tuning spindle.
Claim 10
Dependent Claim
23 words
A channel selecting unit as claimed in claim 8, characterized in that windows and scales are disposed in or under a hinged lid.
Claim 11
Dependent Claim
202 words
A channel selecting unit for HF telecommunication equipment and, more particularly, for radio and television receivers, comprising: a plurality of preset tuning units disposed in a row one behind the other, and a plurality of service switch means coupled to each of said tuning units, for selectively providing a connection to any one of said tuning units, characterized in that said channel selecting unit is provided with a slide which is movable in a direction parallel to the row of tuning units, and is guided on a rod provided with locking grooves with which a spring-loaded locking element is engaged, for actuating the service switch of the corresponding tuning unit whenever it is positioned adjacent to one of said tuning units, thus providing a connection thereto, and wherein said rod is supported in a manner permitting it to be rotated about its longitudinal center line and said locking grooves are formed by a screw thread whose pitch equals the spacing between the tuning units and, wherein said rod is connected to a motor and a control arrangement is provided for said motor which causes said motor to rotate said rod one full revolution in the desired direction in response to a signal.
Claim 12
Dependent Claim
202 words
A channel selecting unit for HF telecommunication equipment and, more particularly, for radio and television receivers, comprising: a plurality of preset tuning units disposed in a row one behind the other, and a plurality of service switch means coupled to each of said tuning units, for selectively providing a connection to any one of said tuning units, characterized in that said channel selecting unit is provided with a slide which is movable in a direction parallel to the row of tuning units, and is guided on a rod provided with locking grooves with which a spring-loaded locking element is engaged, for actuating the service switch of the corresponding tuning unit whenever it is positioned adjacent to one of said tuning units, thus providing a connection thereto, and wherein said rod is supported in a manner permitting it to be rotated about its longitudinal center line and said locking grooves are formed by a screw thread whose pitch equals the spacing between the tuning units and, wherein said rod is connected to a motor and a control arrangement is provided for said motor which causes said motor to rotate said rod one full revolution in the desired direction in response to a signal.
Claim 13
Dependent Claim
137 words
A channel selecting unit for HF telecommunication equipment and, more particularly, for radio and television receivers, comprising: a plurality of preset tuning units disposed in a row one behind the other, and a plurality of service switch means, coupled to each of said tuning units for selectively providing a connection to any one of said tuning uniTs, characterized in that said channel selecting unit is provided with a slide which is movable in a direction parallel to the row of tuning units, for actuating the service switch of the corresponding tuning unit, whenever it is positioned adjacent one of the tuning units, thus providing a connection thereto, and wherein said slide is provided with elements which engage at least one of a positioning element and a band switch of the connected tuning unit with an actuating element.
Claim 14
Dependent Claim
137 words
A channel selecting unit for HF telecommunication equipment and, more particularly, for radio and television receivers, comprising: a plurality of preset tuning units disposed in a row one behind the other, and a plurality of service switch means, coupled to each of said tuning units for selectively providing a connection to any one of said tuning uniTs, characterized in that said channel selecting unit is provided with a slide which is movable in a direction parallel to the row of tuning units, for actuating the service switch of the corresponding tuning unit, whenever it is positioned adjacent one of the tuning units, thus providing a connection thereto, and wherein said slide is provided with elements which engage at least one of a positioning element and a band switch of the connected tuning unit with an actuating element.
Claim 15
Dependent Claim
63 words
A channel selecting unit as claimed in claim 11, wherein the tuning units are formed by potentiometers with parallel tuning spindles, characterized in that said tuning spindles are electroconductively connected to the slider and in that the slide is provided with a contact bridge connecting the end of the tuning spindle with a bus bar running parallel to the row of tuning units.
Claim 16
Dependent Claim
72 words
A channel selecting unit as claimed in claim 11, characterized in that a tuning shaft, which may be displaced along its longitudinal center line, is supported in the slide in perpendicular relation to the direction of movement of said slide, said tuning shaft carrying at least one gear which may be brought into mesh with a gear of each tuning unit and/or a gear of the band switch by displacing said shaft.
Claim 17
Dependent Claim
43 words
A channel selecting unit as claimed in claim 13, characterized in that one end of said tuning shaft is engaged by a recess in a stationary component in the position where said tuning shaft engages the gear of an element to be adjusted.
Claim 18
Dependent Claim
159 words
A channel selecting unit for HF telecommunication equipment and, more particularly, for radio and television receivers, comprising: a plurality of preset tuning units disposed in a row one behind the other; and a plurality of service switch means, coupled to each of said tuning units, for selectively providing a connection to any one of said tuning units, characterized in that said channel selecting unit is provided with a slide which is movable in a direction parallel to the row of tuning units, for actuating the service switch of the corresponding tuning unit whenever it is positioned adjacent one of the tuning units, thus providing a connection thereto and, wherein said tuning unit is provided with a front plate featuring a slot through which a slide portion serving as a grip or connected to a grip may penetrate and in that the slide is connected to an endless tape which is lead around said tuning unit and covers said slot.
Claim 19
Dependent Claim
159 words
A channel selecting unit for HF telecommunication equipment and, more particularly, for radio and television receivers, comprising: a plurality of preset tuning units disposed in a row one behind the other; and a plurality of service switch means, coupled to each of said tuning units, for selectively providing a connection to any one of said tuning units, characterized in that said channel selecting unit is provided with a slide which is movable in a direction parallel to the row of tuning units, for actuating the service switch of the corresponding tuning unit whenever it is positioned adjacent one of the tuning units, thus providing a connection thereto and, wherein said tuning unit is provided with a front plate featuring a slot through which a slide portion serving as a grip or connected to a grip may penetrate and in that the slide is connected to an endless tape which is lead around said tuning unit and covers said slot.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |