On page 16 of the hard copy edition of Mar 15 BRAIN there is an item about a new Shimano patent (#6,497,314). If I understand it right, when you release the QR and pull the skewer part way out, the hub body seperates from the cassette. When you remove the hub in this manner, the cassette stays attached to the right dropout. There is a splined piece that connects the hub and cassette when everthing is locked down.
They say it allows easier gear changes. I would think it would also allow easier spoke replacement as well. I can't tell where the freewheel mechanism is; whether it is in the hub body or in the cassette body.
These kind of hubs have come and gone several times over the years, but never caught on. I suppose they are more expensive. Seems like a good idea to me. I once had a Maillard Helicomatic hub that allowed easy removal of the cogset.
They also have a new patent on a freewheel that allows the use of cogs down to 11 teeth.
John Riley <[email hidden]> wrote in message news:<[email hidden]>...
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On page 16 of the hard copy edition of Mar 15 BRAIN there is an item about a new Shimano patent (#6,497,314). If I understand it right, when you release the QR and pull the skewer part way out, the hub body seperates from the cassette. When you remove the hub in this manner, the cassette stays attached to the right dropout. There is a splined piece that connects the hub and cassette when everthing is locked down.
Given the recent history of the patent office granting patents that obviously shouldn't have been granted, this may fall into that category.
I don't remember the specifics, but the patent office granted a patent to a company for using frames in the design of a website where one frame was used to display the navigation links, and never changed.
In another instance, a patent was granted for using a cookie to store personal information that was used in subsequent visits to a web site that would allow personalization of the web pages that were displayed, ala CNN displaying news for your preferred region, or weather.com displaying the weather in your area by default.
Rob
"Jeff Wills" <[email hidden]> wrote in message "]news:[email hidden]...
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John Riley <[email hidden]> wrote in message
news:<[email hidden]>...
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Quoted message said:
On page 16 of the hard copy edition of Mar 15 BRAIN there is an item about a new Shimano patent (#6,497,314). If I understand it right, when you release the QR and pull the skewer part way out, the hub body seperates from the cassette. When you remove the hub in this manner, the cassette stays attached to the right dropout. There is a splined piece that connects the hub and cassette when everthing is locked down.
Hell, they granted a patent to a 12 year old boy for the swing, i.e. an entertainment device using a suspended seat hanging from chains or rope that swung from a crossbar and used gravity to return to it's starting position. wonder if the "shoe" is available?
It was actually for a specific method of swinging in a non-standard (side to side) fashion with several variants. I tried to find the patent, but was surprised to find that I couldn't. But I have read it in the past.
Michael Devenis said:
Hell, they granted a patent to a 12 year old boy for the swing, i.e. an entertainment device using a suspended seat hanging from chains or rope that swung from a crossbar and used gravity to return to it's starting position. wonder if the "shoe" is available?
