Patent US3873079A successfully refreshed from Google Patents.
US3873079A
Expired / Lapsed
US
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Belleville spring cartridge
Assignee: BJ Services Co USA
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Filing: 1974-01-04
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Granted: 1975-03-25
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Expires: 1994-01-04
Abstract
Abstract A number of Belleville spring discs are held in coaxial relation by inner and outer split retainer rings which are expansible by the springs when the springs are deflected axially and spread at their peripheries. The retainer rings have V-shaped grooves receiving the peripheries of the springs to afford clearance space and minimize friction during deflection of the springs. One of the axially spaced retaining flanges of the retainer rings projects radially beyond the other flange to facilitate assembly.
Inventors
- 👤 Felix Kuus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:18
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/02; F16F1/32
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
108 words
A spring assembly comprising: a pair of axially spaced abutment members, means for thrusting one of said abutment members towards the other, and Belleville spring washer means interposed between and in contact with said abutment members for biasing said abutment members relatively apart, said Belleville spring washer means comprising a plurality of Belleville spring washers disposed in coaxial relation and having peripheral edges in mutual contact, and peripheral retainer ring means engaged with the peripheries of said washers that have peripheral edges in contact, said retainer ring means including radially split resiliently deformable rings receiving said peripheries and having means confining said peripheral edges in said mutual contact.
Claim 2
Dependent Claim
108 words
A spring assembly comprising: a pair of axially spaced abutment members, means for thrusting one of said abutment members towards the other, and Belleville spring washer means interposed between and in contact with said abutment members for biasing said abutment members relatively apart, said Belleville spring washer means comprising a plurality of Belleville spring washers disposed in coaxial relation and having peripheral edges in mutual contact, and peripheral retainer ring means engaged with the peripheries of said washers that have peripheral edges in contact, said retainer ring means including radially split resiliently deformable rings receiving said peripheries and having means confining said peripheral edges in said mutual contact.
Claim 3
Dependent Claim
30 words
A spring assembly as defined in claim 1, wherein each of said rings has a pair of radially projecting peripheral flanges forming a groove receiving said peripheries of said washers.
Claim 4
Dependent Claim
50 words
A spring assembly as defined in claim 1, wherein each of said rings has a pair of radially projecting peripheral flanges forming a groove receiving said peripheries of said washers, one of said flanges projecting into overlying relation to said washers a distance greater than the other of said flanges.
Claim 5
Dependent Claim
79 words
A spring assembly as defined in claim 1, wherein each of said rings has a pair of radially projecting peripheral flanges forming a groove receiving said peripheries of said washers, one of said flanges projecting into overlying relation to said washers a distance greater than the other of said flanges, each of said rings having walls between said flanges forming a clearance space for accommodating the edges of said washers as said washers are axially deformed and expand circumferentially.
Claim 6
Dependent Claim
104 words
A spring assembly as defined in claim 1, wherein each of said rings has a pair of radially projecting peripheral flanges forming a groove receiving said peripheries of said washers, one of said flanges projecting into overlying relation to said washers a distance greater than the other of said flanges, each of said rings having walls between said flanges forming a clearance space for accommodating the edges of said washers as said washers are axially deformed and expand circumferentially, said flanges be spaced apart axially a distance greater than the combined thickness of the peripheries of said washers when said washers are deformed axially.
Claim 7
Dependent Claim
22 words
A spring assembly as defined in claim 1, wherein said rings are provided at Inner and outer said peripheries of said washers.
Claim 8
Dependent Claim
46 words
A spring assembly as defined in claim 1, wherein said rings are provided at inner and outer said peripheries of said washers, each of said inner and outer rings having a pair of radially projecting peripheral flanges forming a groove receiving said peripheries of said washers.
Claim 9
Dependent Claim
66 words
A spring assembly as defined in claim 1, wherein said rings are provided at inner and outer said peripheries of said washers, each of said inner and outer rings having a pair of radially projecting peripheral flanges forming a groove receiving said peripheries of said washers, one of said flanges projecting into overlying relation to said washers a distance greater than the other of said flanges.
Claim 10
Dependent Claim
95 words
A spring assembly as defined in claim 1, wherein said rings are provided at inner and outer said peripheries of said washers, each of said inner and outer rings having a pair of radially projecting peripheral flanges forming a groove receiving said peripheries of said washers, one of said flanges projecting into overlying relation to said washers a distance greater than the other of said flanges, each of said rings having walls between said flanges forming a clearance space for accommodating the edges of said washers as said washers are axially deformed and expand circumferentially.
Claim 11
Dependent Claim
120 words
A spring assembly as defined in claim 1, wherein said rings are provided at inner and outer said peripheries of said washers, each of said inner and outer rings having a pair of radially projecting peripheral flanges forming a groove receiving said peripheries of said washers, one of said flanges projecting into overlying relation to said washers a distance greater than the other of said flanges, each of said rings having walls between said flanges forming a clearance space for accommodating the edges of said washers as said washers are axially deformed and expand circumferentially, said flanges being spaced apart axially a distance greater than the combined thickness of the peripheries of said washers when said washers are deformed axially.
Claim 12
Dependent Claim
26 words
A spring assembly as defined in claim 1, wherein said radially split resiliently deformable rings are preloaded into circumferential contact with said peripheries of said washers.
Claim 13
Dependent Claim
28 words
A spring assembly as defined in claim 1, wherein said radially split and resiliently deformable retainer rings are preloaded into circumferential contact with said peripheries of said washers.
Claim 14
Dependent Claim
98 words
A spring assembly comprising: an elongated inner body, stop means on said inner body, a thrust collar shiftable on said inner body towards and away from said stop means, a support for said body, a stack of frusto-conical spring washers interposed between said stop means and said thrust means with portions of their respective inner and outer peripheries in contact, and inner and outer retainer rings engaged with adjacent spring washers at their respective inner and outer contacting peripheries, each of said retainer rings being radially split and resiliently deformable to enable expansion and contraction of said rings.
Claim 15
Dependent Claim
98 words
A spring assembly comprising: an elongated inner body, stop means on said inner body, a thrust collar shiftable on said inner body towards and away from said stop means, a support for said body, a stack of frusto-conical spring washers interposed between said stop means and said thrust means with portions of their respective inner and outer peripheries in contact, and inner and outer retainer rings engaged with adjacent spring washers at their respective inner and outer contacting peripheries, each of said retainer rings being radially split and resiliently deformable to enable expansion and contraction of said rings.
Claim 16
Dependent Claim
30 words
A spring assembly as defined in claim 13, each of said inner and outer rings having radially projecting peripheral flanges forming a groove receiving the contacting peripheries of said washers.
Claim 17
Dependent Claim
50 words
A spring assembly as defined in claim 13, each of said inner and outer rings having radially projecting peripheral flanges forming a groove receiving the contacting peripheries of said washers, one of said flanges projecting into overlying relation to said washers a distance greater than the other of said flanges.
Claim 18
Dependent Claim
79 words
A spring assembly as defined in claim 13, each of said inner and outer rings having radially projecting peripheral flanges forming a groove receiving the contacting peripheries of said washers, one of said flanges projecting into overlying relation to said washers a distance greater than the other of said flanges, each of said rings having walls between said flanges forming a clearance space fOr accommodating the edges of said washers as said washers are axially deformed and expand circumferentially.
Claim 19
Dependent Claim
104 words
A spring assembly as defined in claim 13, each of said inner and outer rings having radially projecting peripheral flanges forming a groove receiving the contacting peripheries of said washers, one of said flanges projecting into overlying relation to said washers a distance greater than the other of said flanges, each of said rings having walls between said flanges forming a clearance space for accommodating the edges of said washers as said washers are axially deformed and expand circumferentially, said flanges being spaced apart axially a distance greater than the combined thickness of the peripheries of said washers when said washers are deformed axially.
Claim 20
Dependent Claim
26 words
A spring assembly as defined in claim 13, including means adjustably supporting said stop means on said body to allow said spring washers to be preloaded.
References Cited (Backward Citations)
US2939663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |