Patent US4776436A successfully refreshed from Google Patents.
US4776436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Face shock absorber
Assignee: GEOLOGOPROUTSHVATELNO PREDPRIYATIE
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Filing: 1987-05-14
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Granted: 1988-10-11
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Expires: 2007-05-14
Abstract
Abstract A face shock absorber with a top and a bottom adapter, between which there is mounted a housing, and in it there are disposed a spindle and active elements disposed inside a chamber enclosed by a top and a bottom disk, the housing and the spindle, and underneath the bottom disk there are disposed springs. The top adapter is embraced by a two-stepped nut with external thread, screwed up to the housing, and through the two-stepped nut there pass keys. The working chamber is divided by intermediate sleeves into sections, in each of which there are disposed spherical heads, shaped in the external surface of the spindle. The active elements disposed inside the working chamber are balls. The springs are limited in their bottom end by a ring-shaped nut, and it is possible to use springs of the slotted type.
Inventors
- 👤 Nikolay D. Nenkov
- 👤 Dimo S. Yordanov
- 👤 Peter V. Nedyalkov
- 👤 Botko P. Ivanov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:47
CPC Classifications
F; F16; F16F; F16F7/00; F16F7/01; F16F7/015; E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/07
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
200 words
A face shock absorber comprising: a top adapter and a bottom adapter, between said adapters there being mounted a housing; a spindle, disposed inside said housing and forming a space between said spindle and said housing; a top disk and a bottom disk, each disk being disposed around said spindle, within said space and forming a chamber, said chamber being defined by said disks, said spindle, and said housing; active elements disposed within said chamber; a pair of springs disposed beneath said bottom disk and within the space between said spindle and said housing; said springs being of unequal length and being substantially coaxially disposed one inside the other; said top adapter being embraced by a two-stepped nut, said two-stepped nut having an internal thread and an external thread and a stepped external profile, said external thread of said two stepped nut being screwed to the housing; a key, passing through a longitudinal keyway in said two-stepped nut; a plurality of intermediate sleeves mounted on said housing within said chamber, thereby separating said chamber into a plurality of sections; and a plurality of spherical heads formed on the surface of said spindle, each head residing within one of said sections.
Claim 2
Dependent Claim
200 words
A face shock absorber comprising: a top adapter and a bottom adapter, between said adapters there being mounted a housing; a spindle, disposed inside said housing and forming a space between said spindle and said housing; a top disk and a bottom disk, each disk being disposed around said spindle, within said space and forming a chamber, said chamber being defined by said disks, said spindle, and said housing; active elements disposed within said chamber; a pair of springs disposed beneath said bottom disk and within the space between said spindle and said housing; said springs being of unequal length and being substantially coaxially disposed one inside the other; said top adapter being embraced by a two-stepped nut, said two-stepped nut having an internal thread and an external thread and a stepped external profile, said external thread of said two stepped nut being screwed to the housing; a key, passing through a longitudinal keyway in said two-stepped nut; a plurality of intermediate sleeves mounted on said housing within said chamber, thereby separating said chamber into a plurality of sections; and a plurality of spherical heads formed on the surface of said spindle, each head residing within one of said sections.
Claim 3
Dependent Claim
27 words
A shock absorber as claimed in claim 1, wherein said active elements are balls and said springs are limited by a ring-shaped nut screwed to said housing.
Claim 4
Dependent Claim
13 words
A shock absorber as claimed in claim 1, wherein the springs are slotted.
Claim 5
Dependent Claim
13 words
A shock absorber as claimed in claim 2, wherein the springs are slotted.
Claim 6
Dependent Claim
22 words
A shock absorber as claimed in claim 1, wherein said active elements are balls arranged in a pack having a certain mass
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) | 1991-10-11 | 1992-04-11 | 1992-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-11 | 1996-04-11 | 1996-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-11 | 2000-04-11 | 2000-10-11 | $7700.00 | Window Closed / Lapsed |