Source: http://www.google.com/patents/US6478584?dq=4052565
Timestamp: 2017-05-24 04:46:46
Document Index: 364563987

Matched Legal Cases: ['Application No. 9912201', 'art 11', 'art 11', 'art 11', 'art 16', 'art 11', 'art 16', 'art 16', 'art 11']

Patent US6478584 - Electrical signal coupling device - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsAn electrical signal coupling device and more particularly, a rotary signal coupler suitable for use in transmitting electrical signals between transducers mounted on a shaft and wiring which is fixed relative to the structure in which the shaft is rotatably mounted. The coupling device includes a first...http://www.google.com/patents/US6478584?utm_source=gb-gplus-sharePatent US6478584 - Electrical signal coupling deviceAdvanced Patent SearchTry the new Google Patents, with machine-classified Google Scholar results, and Japanese and South Korean patents.Publication numberUS6478584 B2Publication typeGrantApplication numberUS 09/767,559Publication dateNov 12, 2002Filing dateJan 23, 2001Priority dateMay 25, 1999Fee statusPaidAlso published asCA2338626A1, CN1210834C, CN1316115A, EP1101252A1, US20010008810, WO2000072401A1Publication number09767559, 767559, US 6478584 B2, US 6478584B2, US-B2-6478584, US6478584 B2, US6478584B2InventorsDavid Daniel George Vile, John BeckleyOriginal AssigneeTransense Technologies PlcExport CitationBiBTeX, EndNote, RefManPatent Citations (15), Referenced by (18), Classifications (8), Legal Events (6) External Links: USPTO, USPTO Assignment, EspacenetElectrical signal coupling device
US 6478584 B2Abstract
An electrical signal coupling device and more particularly, a rotary signal coupler suitable for use in transmitting electrical signals between transducers mounted on a shaft and wiring which is fixed relative to the structure in which the shaft is rotatably mounted. The coupling device includes a first part mounted on a rotary shaft and a second part mounted on the shaft in juxtaposition to the first part. The first and second parts include respective first and second conductors for electrically coupling the parts. The coupling device also includes means for maintaining a predetermined and substantially constant annular gap between the first and second parts and means, disposed on the second part, for preventing rotation of the second part as the first part rotates with the shaft.
This application is a Continuation of International Application (WIPO) No. PCT/GB00/02009 filed May 25, 2000, that designates the United States and which claims priority from British Application No. 9912201.2, filed May 25, 1999.
With a view to obviating the disadvantages outlined above, the present invention provides an electrical signal coupling device comprising a first part mountable on a rotary shaft; a second part mountable on the rotary shaft in juxtaposition to the first part, the first and second parts including respective conductors for electrically coupling the first and second parts; means for maintaining a predetermined and substantially constant annular gap between the first and second parts; and means provided on the second part for preventing rotation of the second part as the first part rotates with the shaft.
The above and further features and advantages of the invention will become clear from the following description of a preferred embodiment thereof, given by way of example only, reference being had to the accompanying drawings wherein:
Referring to FIG. 2 the illustrated electrical coupling device 10 comprises a first part 11 which is mounted on a collar 12 which is itself mounted on a shaft 3. The first part 11 includes electrical conductors which form a transmission line. These conductors are connected to a SAW transducer 15 which is itself mounted on the surface of the shaft 13. The first coupling part 11 is surrounded by a second coupling part 16 which includes a transmission line which electrically couples with the transmission line of the first part 11 in use of the device. The second coupling part 16 is mounted in a carrier 17 which is mounted on the first part by means of a ball-bearing 18. The ball-bearing 18 is formed by an inner race provided in the outer surface of the collar 12, an outer race formed on the inner surface of the crier 17, and a multiplicity of balls. The exact form of the bearing is not critical to the present invention and any ball, roller or plain bearing arrangement will suffice. The carrier 17 also carries the second part 16′ of a second coupling device, the first part 11′ of which is mounted on the collar 12 and is connected to a second SAW device 14.
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