US3563527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring assembly
Assignee: MAROTTA VALVE CORP
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Filing: 1969-03-20
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Granted: 1971-02-16
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Expires: 1989-03-20
Abstract
Abstract A spring assembly having an annular disc of spring material connected at its inner and outer edges to cylindrical elements that connect the disc between the parts with which the spring is to function. The cylindrical elements are constructed with cutouts that divide the elements into secondary spring elements which are angularly spaced around the edges of the disc and which bend to give the assembly a low hysteresis.
Inventors
- 👤 Alfred Tillman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:27
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0636; F; F16; F16F; F16F1/00; F16F1/02; F16F1/32
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
101 words
A spring assembly comprising a laterally extending annular disc spring means including a plurality of secondary springs rigidly connected at one end with one of the circumferential edges of the annular disc the secondary springs having their other ends connected with a support by connections that resist bending of the secondary springs, other spring means including a plurality of secondary springs each of which is rigidly connected at one end with the other circumferential edge of the annular disc and connected at its other end with a reference device that moves in a direction parallel to the axis of the disc
Claim 2
Dependent Claim
101 words
A spring assembly comprising a laterally extending annular disc spring means including a plurality of secondary springs rigidly connected at one end with one of the circumferential edges of the annular disc the secondary springs having their other ends connected with a support by connections that resist bending of the secondary springs, other spring means including a plurality of secondary springs each of which is rigidly connected at one end with the other circumferential edge of the annular disc and connected at its other end with a reference device that moves in a direction parallel to the axis of the disc
Claim 3
Dependent Claim
89 words
The spring assembly described in claim 1 characterized by the disc being a spring that dishes to provide the spring action, the secondary springs being angularly spaced around the disc and being part of a spring strip having openings therethrough that space the secondary springs from one another, the strip being continuous beyond at least one end of said openings and the continuous portion of the strip constituting a part of the rigid connections of the ends of the secondary springs to the structure to which they are connected.
Claim 4
Dependent Claim
26 words
The spring assembly described in claim 2 characterized by a solid ring constituting the support at the ends of the secondary springs remote from the disc.
Claim 5
Dependent Claim
35 words
The spring assembly described in claim 2 characterized by the secondary springs being parts of a spring strip having openings therethrough spaced from one another and terminating short of both edge portions of the strip.
Claim 6
Dependent Claim
30 words
The spring assembly described in claim 4 characterized by the openings being wider than the secondary springs and the strip being steel of a thickness of .002 to .050 inches.
Claim 7
Dependent Claim
62 words
The spring assembly described in claim 1 characterized by the secondary springs connected with both the inner and outer circumferential edges of the disc extending substantially parallel to the axis of the disc and the secondary springs at the outside circumferential edge of the disc extending in the opposite direction to the secondary springs that are connected with the inside circumferential edge.
Claim 8
Dependent Claim
50 words
The spring assembly described in claim 6 characterized by the ends of the secondary springs that are remote from the disc each being connected to a solid ring by a rigid connection, and one of said rings constituting part of the reference device with which the spring assembly is used.
Claim 9
Dependent Claim
75 words
The spring assembly described in claim 7 characterized by the secondary springs that are connected with each of the inner and outer circumferences of the disc being portions of a spring strip that are substantially cylindrical, the secondary springs being separated from one another by openings through the strips, but the edge portions of the strips beyond said openings being substantially continuous and comprising parts of the connection of the secondary strips to the rings.
Claim 10
Dependent Claim
74 words
The spring assembly described in claim 1 characterized by the secondary springs connected to each of the circumferential edges of the disc being a part of spring strips having openings therethrough which space the respective secondary springs from one another, said secondary springs being of such limited extent in the direction of the circumference of the strip that at least a part of the height of each secondary spring is of flat cross section.
Claim 11
Dependent Claim
56 words
The spring assembly described in claim 1 characterized by the secondary springs connected to each of the circumferential edges of the disc being a part of spring strips having openings therethrough which space the respective secondary springs from one another, the secondary springs being of greater circumferential width than the openings which separate the secondary springs.
Claim 12
Dependent Claim
51 words
The spring assembly described in claim 1 characterized by the disc having an elasticity correlated with the elasticity of the secondary springs whereby the bending resistance of the secondary springs causes dishing of said disc, changes in the amount of said dishing providing most of the spring action of the assembly.
References Cited (Backward Citations)
US3261598A
Cited
US3888258A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |