Patent US4561533A successfully refreshed from Google Patents.
US4561533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chatter free rotary friction device and method of making the same
Assignee: Individual
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Filing: 1983-09-06
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Granted: 1985-12-31
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Expires: 2003-09-06
Abstract
Abstract A rotary friction device having at least a plate supporting a friction element for frictional engagement between relatively rotatable members. When in frictional engagement the plate is placed in tension to tend to stretch the expanse of the same to prevent the application of compressive forces thereon or flexure thereof so as to avoid the production of chattering and related problems by the same.
Inventors
- 👤 Frank N. Roseto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:01
CPC Classifications
F; F16; F16D; F16D13/00; F16D13/58; F16D13/60; F16D13/64
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
142 words
A rotary friction device having a plurality of relatively rotating members each with an axis of rotation passing therethrough, a plurality of plates each connected to one of said members in a plane substantially perpendicular to said axis of rotation and being circumferentially spaced thereabout, friction means mounted on each said plate for frictional engagement with at least another of said members to restrain relative rotation between said members, and a plurality of means connecting each said plate to said one member each at a point arcuately rearward of the mount of said friction means to said respective plate such that when said friction means is engaged with another relatively rotating member moving in a rotational direction about said axis of rotation said plate is placed in tension between said friction means and said connecting means and to avoid production of chattering.
Claim 2
Dependent Claim
142 words
A rotary friction device having a plurality of relatively rotating members each with an axis of rotation passing therethrough, a plurality of plates each connected to one of said members in a plane substantially perpendicular to said axis of rotation and being circumferentially spaced thereabout, friction means mounted on each said plate for frictional engagement with at least another of said members to restrain relative rotation between said members, and a plurality of means connecting each said plate to said one member each at a point arcuately rearward of the mount of said friction means to said respective plate such that when said friction means is engaged with another relatively rotating member moving in a rotational direction about said axis of rotation said plate is placed in tension between said friction means and said connecting means and to avoid production of chattering.
Claim 3
Dependent Claim
58 words
A rotary friction device as in claim 1, each of said plates mounting said friction means separately to one of said members for independent frictional engagement with another of said members to tension each of said plates independently of the others of said plates in response to frictional engagement between its respective friction means and said other member.
Claim 4
Dependent Claim
34 words
A rotary friction device as in claim 1, said connecting means connecting each said plate to said one friction member being radially inward of the mounting of said friction means to its respective plate.
Claim 5
Dependent Claim
32 words
A rotary friction device as in claim 1, said mounting of said friction means to its respective plate being arcuately forward of said means connecting each said plate to said one member.
Claim 6
Dependent Claim
58 words
A rotary friction device as in claim 1, said connecting means connecting each said plate to said one member being radially inward of the mounting of said friction means to its respective plate and said mounting of said friction means to its respective plate being arcuately forward of said means connecting each said plate to said one member.
Claim 7
Dependent Claim
133 words
In a device for use between relatively rotatable engageable members in which one of said engaging members is a hub, at least a plate connected with said hub and having mounting friction means thereon spaced radially outward from the center of said hub and spaced radially outward from and arcuately forward of the whole of the connection of said plate with said hub in the direction of relative rotation of said hub and another engaging member whereby frictional engagement that is effected between said plate friction means and other engaging member is in advance of forces applied to the connecting means between said plate and hub such that said plate therebetween is stretched and placed in tension in the direction of rotation to avoid the application of compressive forces thereon that produce chattering.
Claim 8
Dependent Claim
133 words
In a device for use between relatively rotatable engageable members in which one of said engaging members is a hub, at least a plate connected with said hub and having mounting friction means thereon spaced radially outward from the center of said hub and spaced radially outward from and arcuately forward of the whole of the connection of said plate with said hub in the direction of relative rotation of said hub and another engaging member whereby frictional engagement that is effected between said plate friction means and other engaging member is in advance of forces applied to the connecting means between said plate and hub such that said plate therebetween is stretched and placed in tension in the direction of rotation to avoid the application of compressive forces thereon that produce chattering.
Claim 9
Dependent Claim
35 words
In a device as in claim 6, a plurality of said plates being mounted circumferentially about said hub to provide a plurality of friction means each spaced arcuately about and radially outward from said hub.
Claim 10
Dependent Claim
42 words
In a device as in claim 7, each of said plates being connected with said hub by relatively spaced connecting means each of which is spaced radially inward of and arcuately trailing the mounting of said friction means on the respective plate.
Claim 11
Independent Claim
111 words
The method of making a rotary friction device chatter free comprising connecting a radially extending plate on one of two relatively rotatable engaging members by means to securely position a friction element mounted on the plate radially outward of a hub of the one engaging member, and positioning the whole of the connection to arcuately trail the approximate center of the mass of the friction element to cause a pulling force to be applied to the plate to tense the plate when frictional engagement is established between the friction element of the one engaging member and the engaging friction element to prevent the flexure of the plate and avoid the chattering.
Claim 12
Independent Claim
111 words
The method of making a rotary friction device chatter free comprising connecting a radially extending plate on one of two relatively rotatable engaging members by means to securely position a friction element mounted on the plate radially outward of a hub of the one engaging member, and positioning the whole of the connection to arcuately trail the approximate center of the mass of the friction element to cause a pulling force to be applied to the plate to tense the plate when frictional engagement is established between the friction element of the one engaging member and the engaging friction element to prevent the flexure of the plate and avoid the chattering.
Claim 13
Dependent Claim
50 words
The method of making a rotary friction drive as in claim 9, securing a plurality of like radially extending plates circumferentially about the hub of the one engaging member to provide a plurality of friction elements each positioned arcuately in advance of the trailing mounting means of its respective plate.
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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) | 1988-12-30 | 1989-07-01 | 1989-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-30 | 1993-07-01 | 1993-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-30 | 1997-07-01 | 1997-12-31 | $7700.00 | Window Closed / Lapsed |