Patent US3748764A successfully refreshed from Google Patents.
US3748764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic display
Assignee: Rheinmetall Air Defence AG
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Filing: 1971-09-29
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Granted: 1973-07-31
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Expires: 1991-09-29
Abstract
Abstract A pneumatic display device, comprising a plate block embodying a plurality of superimposed transparent plates, each of these plates being provided with means defining a disc guide channel. Each disc guide channel has a first air channel followed by a supply section for a plurality of non-transparent display discs displaceably arranged in a row therein, a display section following such supply section, said display section being in the form of a trace line for symbolizing a character at the region of a display zone limited by a display window provided at a nontransparent cover plate of the plate block. At the end of the display section such merges into a second air channel. Upon blowing air into the first air channel of a preselected plate the display discs thereof are displaced out of the supply section thereof into the display section thereof and thereby become visible at the display zone in the form of a desired character and upon further blowing air into the second air channel these display discs are again forced back into the supply section of the relevant disc guide channel.
Inventors
- 👤 M Schilter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:53
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/007; G; G08; G08B; G08B5/00; G08B5/06; G09; G09F; G09F9/00; G09F9/46
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
256 words
A pneumatic display device, comprising a plate block incorpoRating a plurality of superimposed transparent plates and a non-transparent cover plate having a display window defining a character display zone, each of said transparent plates being provided with means defining a disc guide channel having substantially rectangular cross-sectional configuration, each disc guide channel having a first air channel and a supply section which communicates with said first air channel, said first air channel having a reduced cross-section immediately adjacent said supply section, a plurality of adjacently positioned non-transparent display discs displaceably arranged in said supply section and being displaceably retained in said supply section by said reduced cross-section, a display section following said supply section said display section being in the form of a channel for symbolizing a character at the region of said display zone delimited by said display window provided at said non-transparent cover plate of said plate block, said display section merging at the end thereof into a second air channel, said second air channel having a reduced cross-section immediately adjacent said display section to keep said discs from entering therein, means for introducing air into the first air channel of a preselected transparent plate and for displacing the display discs out of the supply section thereof into the display section thereof and thereby become visible at the display zone in the form of a desired character and means for introducing air into said second air channel and for returning said display discs back into said supply section of the relevant disc guide channel.
Claim 2
Dependent Claim
256 words
A pneumatic display device, comprising a plate block incorpoRating a plurality of superimposed transparent plates and a non-transparent cover plate having a display window defining a character display zone, each of said transparent plates being provided with means defining a disc guide channel having substantially rectangular cross-sectional configuration, each disc guide channel having a first air channel and a supply section which communicates with said first air channel, said first air channel having a reduced cross-section immediately adjacent said supply section, a plurality of adjacently positioned non-transparent display discs displaceably arranged in said supply section and being displaceably retained in said supply section by said reduced cross-section, a display section following said supply section said display section being in the form of a channel for symbolizing a character at the region of said display zone delimited by said display window provided at said non-transparent cover plate of said plate block, said display section merging at the end thereof into a second air channel, said second air channel having a reduced cross-section immediately adjacent said display section to keep said discs from entering therein, means for introducing air into the first air channel of a preselected transparent plate and for displacing the display discs out of the supply section thereof into the display section thereof and thereby become visible at the display zone in the form of a desired character and means for introducing air into said second air channel and for returning said display discs back into said supply section of the relevant disc guide channel.
Claim 3
Dependent Claim
23 words
The display device as defined in claim 1, wherein said display discs are formed as substantially circular discs having truncated conical side surfaces.
Claim 4
Dependent Claim
96 words
The display device as defined in claim 1, wherein said air introducing means is a pneumatically controlled fluidic element each of both of said air channels arranged at the disc guide channel of a given plate are associated with a respective output of said associated pneumatically controlled fluidic element in such a manner that in one operating condition of the fluidic element the display discs are driven into the display section of the associated disc guide channel and in the other operating condition of the fluidic element such display discs are driven into the supply section.
Claim 5
Dependent Claim
243 words
A pneumatic display device, comprising a plate block incorporating a plurality of superimposed plates and a cover plate member having a display window defining a character display zone, each of said superimposed plates being provided with means defining a disc guide channel, each disc guide channel having a first air channel followed by a supply section containing a plurality of non-transparent display discs displaceably arranged therein, said first air channel having a reduced cross-section immediately adjacent said supply section, said discs being displaceably retained in said supply section by said reduced cross-section, a display section following said supply section, and a second air channel following said display section, said display section being configured to symbolize a given character at the region of said display zone of said cover plate member of said plate block, said display section merging at the end thereof into said second air channel, said second air channel having a reduced cross-section immediately adjacent said display section to keep said discs from entering therein so that upon blowing air into the first air channel of a preselected one of said superimposed plates the display discs thereof are displaced out of the supply section thereof into the display section thereof and thereby become visible at the display zone in the form of a desired character and upon blowing air into said second air channel said display discs are again forced back into said supply section of the corresponding disc guide channel.
Claim 6
Dependent Claim
243 words
A pneumatic display device, comprising a plate block incorporating a plurality of superimposed plates and a cover plate member having a display window defining a character display zone, each of said superimposed plates being provided with means defining a disc guide channel, each disc guide channel having a first air channel followed by a supply section containing a plurality of non-transparent display discs displaceably arranged therein, said first air channel having a reduced cross-section immediately adjacent said supply section, said discs being displaceably retained in said supply section by said reduced cross-section, a display section following said supply section, and a second air channel following said display section, said display section being configured to symbolize a given character at the region of said display zone of said cover plate member of said plate block, said display section merging at the end thereof into said second air channel, said second air channel having a reduced cross-section immediately adjacent said display section to keep said discs from entering therein so that upon blowing air into the first air channel of a preselected one of said superimposed plates the display discs thereof are displaced out of the supply section thereof into the display section thereof and thereby become visible at the display zone in the form of a desired character and upon blowing air into said second air channel said display discs are again forced back into said supply section of the corresponding disc guide channel.
Claim 7
Dependent Claim
251 words
A display device comprising: a. a frame having a plurality of plate members, each of said plate members being fOrmed of transparent material and positioned and arranged one behind another to form a package, said frame having an indicating window aligned with corresponding indicating regions of each of said plate members; b. each plate member including a respective channel which extends along a curved line, said channel communicating with a first air conduit connection and with a second air conduit connection; c. reversible air control means associated with said indicator plate members for delivering pressurized air to select plate channels for moving indicator discs in indicating position and for removing indicator discs from its indicator position; d. each of said plate channels including an indicator channel element positioned and arranged within the indicating zone of said plate member in a predetermined pattern which corresponds to the character to be indicated, one end of said indicator channel element being constricted, the other end of the indicator channel section element also being constricted at the air inlet connection of said channel section, the length of the channel being at least as long as the indicator channel element; and e. a plurality of visually-noticeable, movable, loose indicator discs substantially filling said channel section having a diameter slightly smaller than the said channel whereby said discs are movable therein by means of said pressurized air to the indicator section and thereafter by means of oppositely directed pressurized air are returned back to said channel section.
Claim 8
Dependent Claim
251 words
A display device comprising: a. a frame having a plurality of plate members, each of said plate members being fOrmed of transparent material and positioned and arranged one behind another to form a package, said frame having an indicating window aligned with corresponding indicating regions of each of said plate members; b. each plate member including a respective channel which extends along a curved line, said channel communicating with a first air conduit connection and with a second air conduit connection; c. reversible air control means associated with said indicator plate members for delivering pressurized air to select plate channels for moving indicator discs in indicating position and for removing indicator discs from its indicator position; d. each of said plate channels including an indicator channel element positioned and arranged within the indicating zone of said plate member in a predetermined pattern which corresponds to the character to be indicated, one end of said indicator channel element being constricted, the other end of the indicator channel section element also being constricted at the air inlet connection of said channel section, the length of the channel being at least as long as the indicator channel element; and e. a plurality of visually-noticeable, movable, loose indicator discs substantially filling said channel section having a diameter slightly smaller than the said channel whereby said discs are movable therein by means of said pressurized air to the indicator section and thereafter by means of oppositely directed pressurized air are returned back to said channel section.
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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) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |