Patent US3854347A successfully refreshed from Google Patents.
US3854347A
Expired / Lapsed
US
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Dynamic balancing device for a computer disc memory
Assignee: Individual
•
Filing: 1973-08-15
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Granted: 1974-12-17
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Expires: 1993-08-15
Abstract
Abstract A plurality of small, round, heavy balls are enclosed within a continuous, hollow, annular tube and the tube is attached to a rotary disc pack memory near the trim shield to the upper or lower clamp rings or to other areas of the rotary disc pack memory to dynamically balance it.
Inventors
- 👤 J Hellerich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:05
CPC Classifications
F; F16; F16F; F16F15/00; F16F15/32; F16F15/36; F16F15/363; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/211; Y10T74/2114
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
153 words
A dynamic balancer for use in a computer disc memory of the type having a plurality of memory discs, each disc having a center hole, support means for rotating the discs about a common axis, the support means including a plurality of spacer rings for separating the discs, top and bottom clamp rings for clamping the discs and the sapcer rings in a stack which is generally centered about the common axis, and a hub generally centered on the common axis within the center holes of the memory discs and having a flange attached to at least one of the spacer rings, the dynamic balancer comprising an annular support positioned within the center hole of, at least, one of the discs and exterior of the hub, the annular support having an annular cavity which encircles the common axis, and mass members which are contained by and freely movable within the annular support cavity.
Claim 2
Dependent Claim
153 words
A dynamic balancer for use in a computer disc memory of the type having a plurality of memory discs, each disc having a center hole, support means for rotating the discs about a common axis, the support means including a plurality of spacer rings for separating the discs, top and bottom clamp rings for clamping the discs and the sapcer rings in a stack which is generally centered about the common axis, and a hub generally centered on the common axis within the center holes of the memory discs and having a flange attached to at least one of the spacer rings, the dynamic balancer comprising an annular support positioned within the center hole of, at least, one of the discs and exterior of the hub, the annular support having an annular cavity which encircles the common axis, and mass members which are contained by and freely movable within the annular support cavity.
Claim 3
Dependent Claim
31 words
A dynamic balancer for use in a computer disc memory as recited in claim 1 wherein the annular support is adjacent and attached to at least one of the spacer rings.
Claim 4
Dependent Claim
88 words
A dynamic balancer for use in a computer disc memory as recited in claim 1 wherein at least one of the top and bottom clamp rings has a channel shaped outer peripheral edge which together with one of the spacer rings next adjacent to the one of the top and bottom clamp rings partially defines an annular space about the common axis, the cross-sectional area of the annular support cavity having generally the same shape as the shape of the cross-sectional area of the partially defined annular space.
Claim 5
Dependent Claim
29 words
A dynamic balancer for use in a computer disc memory as recited in claim 3 wherein both the annular support and the mass members are made of non-magnetic materials.
Claim 6
Dependent Claim
32 words
A dynamic balancer for use in a computer disc memory as recited in claim 3 wherein the annular support is a closed, hollow tube and the mass members are spherical in shape.
Claim 7
Independent Claim
153 words
A method of dynamically balancing a computer disc memory of the type having a plurality of memory discs, each disc having a center hole, support means for rotating the discs about a common axis, the support means including a plurality of spacer rings for separating the discs, top and bottom clamp rings for clamping the discs and the spacer rings in a stack which is generally centered about the common axis, and a hub generally centered on the common axis within the center holes of the memory discs and having a flange attached to at least one of the spacer rings, the dynamic balancing method comprising the steps of inserting mass members in a hollow annular support so that they are freely movable within the annular support, and positioning the annular support within the center hole of, at least, one of the discs and exterior of the hub, and encircling the common axis.
Claim 8
Independent Claim
153 words
A method of dynamically balancing a computer disc memory of the type having a plurality of memory discs, each disc having a center hole, support means for rotating the discs about a common axis, the support means including a plurality of spacer rings for separating the discs, top and bottom clamp rings for clamping the discs and the spacer rings in a stack which is generally centered about the common axis, and a hub generally centered on the common axis within the center holes of the memory discs and having a flange attached to at least one of the spacer rings, the dynamic balancing method comprising the steps of inserting mass members in a hollow annular support so that they are freely movable within the annular support, and positioning the annular support within the center hole of, at least, one of the discs and exterior of the hub, and encircling the common axis.
Claim 9
Dependent Claim
39 words
A method of dynamically balancing a computer disc memory as recited in claim 6 wherein the step of positioning the annular support includes the step of attaching the annular support adjacent to at least one of the spacer rings.
Claim 10
Independent Claim
190 words
A method of assembling a dynamically balanced computer disc memory of the type having a plurality of memory discs, each disc having a center hole, support means for rotating the discs about a common axis and including a plurality of spacer rings for separating the discs, and a hub generally centered on the common axis within the center holes of the memory discs and having a flange attached to at least one of the spacer rings, the assembly method comprising the steps of inserting mass members within a hollow, annular support so that they are freely movable within the hollow, annular support, clamping the discs and the spacer rings in a stack which is generally centered about the common axis, at least one of the top and bottom clamp rings having a channel shaped outer peripheral edge which together with one of the spacer rings next adjacent to the one of the top and bottom clamp rings partially defines an annular space about the common axis, and inserting the hollow, annular support within the annular space simultaneously with the step of clamping the discs and spacer rings in a stack.
Claim 11
Independent Claim
190 words
A method of assembling a dynamically balanced computer disc memory of the type having a plurality of memory discs, each disc having a center hole, support means for rotating the discs about a common axis and including a plurality of spacer rings for separating the discs, and a hub generally centered on the common axis within the center holes of the memory discs and having a flange attached to at least one of the spacer rings, the assembly method comprising the steps of inserting mass members within a hollow, annular support so that they are freely movable within the hollow, annular support, clamping the discs and the spacer rings in a stack which is generally centered about the common axis, at least one of the top and bottom clamp rings having a channel shaped outer peripheral edge which together with one of the spacer rings next adjacent to the one of the top and bottom clamp rings partially defines an annular space about the common axis, and inserting the hollow, annular support within the annular space simultaneously with the step of clamping the discs and spacer rings in a stack.
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) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |