Patent US1856505A successfully refreshed from Google Patents.
US4441785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary fiber optic switch
Assignee: International Business Machines Corp
•
Filing: 1981-10-29
•
Granted: 1984-04-10
•
Expires: 2001-10-29
Abstract
Abstract Electronic signals which are converted to light signals by means of a light emitting diode or laser diode are channeled through a fiber optic group and enter a rotary fiber optic switch. A rotatable drum channels and distributes the light signals to intended output locations by means of light conductive elements in the drum. Selecting the desired position of the drum by means of a detent switch or by mechanically rotating the drum by a light actuated mechanism determines the channel orientation of the device. The output signals emerge from the light conductive elements in the drum and are transmitted through output fiber optic groups to a photo diode or photo transistor where they are converted into electronic signals for normal electronic I/O processing.
Inventors
- 👤 James R. Petrozello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:32
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/26; G02B6/35; G02B6/3502; G02B6/3504; G02B6/354; G02B6/3554; G02B6/3556; G02B6/3564; G02B6/3568; G02B6/3574
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
228 words
A rotary fiber optic switch for controlling and distributing light signal impulses comprising; a cylindrical housing; a drum rotatably mounted within said housing; a plurality of cable sockets positioned at specific locations around the periphery of said housing and communicating with the periphery of said drum; an input fiber optic cable connected to one of said cable sockets and having a plurality of fiber optic strands communicating with the periphery of said drum and each of which may transmit a series of input light signal impulses; a plurality of output fiber optic cables, there being one connected to each of the remaining cable sockets and communicating with the periphery of said drum; a plurality of output fiber optic strands in each one of said output cables and communicating with the periphery of said drum for transmitting a plurality of output light signal impulses; a plurality of light conductive elements arranged within said drum, there being one conductive element associated with each one of said input fiber optic strands for transmitting the input light signal impulses from said input cable to the output fiber optic strands in one or more of said output cables; and means for selectively positioning said drum and light conductive elements to complete one or more light paths between said input fiber optic cable and simultaneously more than one of said output fiber optic cables.
Claim 2
Dependent Claim
228 words
A rotary fiber optic switch for controlling and distributing light signal impulses comprising; a cylindrical housing; a drum rotatably mounted within said housing; a plurality of cable sockets positioned at specific locations around the periphery of said housing and communicating with the periphery of said drum; an input fiber optic cable connected to one of said cable sockets and having a plurality of fiber optic strands communicating with the periphery of said drum and each of which may transmit a series of input light signal impulses; a plurality of output fiber optic cables, there being one connected to each of the remaining cable sockets and communicating with the periphery of said drum; a plurality of output fiber optic strands in each one of said output cables and communicating with the periphery of said drum for transmitting a plurality of output light signal impulses; a plurality of light conductive elements arranged within said drum, there being one conductive element associated with each one of said input fiber optic strands for transmitting the input light signal impulses from said input cable to the output fiber optic strands in one or more of said output cables; and means for selectively positioning said drum and light conductive elements to complete one or more light paths between said input fiber optic cable and simultaneously more than one of said output fiber optic cables.
Claim 3
Dependent Claim
241 words
A rotary fiber optic switch for controlling and distributing light signal impulses comprising; a cylindrical housing; a drum rotatably mounted within said housing; a plurality of cable sockets positioned at specific locations around the periphery of said housing and communicating with the periphery of said drum; an input fiber optic cable connected to one of said cable sockets and having a plurality of fiber optical strands communicating with the periphery of said drum and each of which may transmit a series of input light signal impulses; a plurality of output fiber optic cables, there being one connected to each of the remaining cable sockets and communicating with the periphery of said drum; a plurality of output fiber optic strands in each one of said output cables and communicating with the periphery of said drum for transmitting a plurality of output light signal impulses; a plurality of programmable pre-formed light conductive elements having different configurations arranged within said drum, there being one conductive element associated with each one of said input fiber optic strands for transmitting the input light signal impulses from said input cable to the output fiber optic strands in one or more of said output cables; and means for selectively positioning said drum and light conductive elements to complete one or more light paths between said input fiber optic strands in said input cable and the output fiber optic strands in simultaneously more than one of said output cables.
Claim 4
Dependent Claim
241 words
A rotary fiber optic switch for controlling and distributing light signal impulses comprising; a cylindrical housing; a drum rotatably mounted within said housing; a plurality of cable sockets positioned at specific locations around the periphery of said housing and communicating with the periphery of said drum; an input fiber optic cable connected to one of said cable sockets and having a plurality of fiber optical strands communicating with the periphery of said drum and each of which may transmit a series of input light signal impulses; a plurality of output fiber optic cables, there being one connected to each of the remaining cable sockets and communicating with the periphery of said drum; a plurality of output fiber optic strands in each one of said output cables and communicating with the periphery of said drum for transmitting a plurality of output light signal impulses; a plurality of programmable pre-formed light conductive elements having different configurations arranged within said drum, there being one conductive element associated with each one of said input fiber optic strands for transmitting the input light signal impulses from said input cable to the output fiber optic strands in one or more of said output cables; and means for selectively positioning said drum and light conductive elements to complete one or more light paths between said input fiber optic strands in said input cable and the output fiber optic strands in simultaneously more than one of said output cables.
Claim 5
Dependent Claim
48 words
A rotary fiber optic switch as defined in claim 2 and having pre-formed light conductive elements which have a split configuration for transmitting a single input light signal impulse from an input fiber optic strand to output fiber optic strands in more than one of said output cables.
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) | 1987-04-10 | 1987-10-10 | 1988-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-10 | 1991-10-10 | 1992-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-10 | 1995-10-10 | 1996-04-10 | $7700.00 | Window Closed / Lapsed |