Patent US5073073A successfully refreshed from Google Patents.
US5073073A
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US
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Self-aligning bolt and a self-aligning nut
Assignee: Aoyama Seisakusho Co Ltd
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Filing: 1989-10-19
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Granted: 1991-12-17
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Expires: 2009-10-19
Abstract
Abstract A self-aligning bolt has an eccentric pilot tip extending forwardly of the externally threaded shank thereof. A self-aligning nut has an eccentric counter-bore formed therein on the side of the seating face and offset from the axis of the internally threaded bore of the nut.
Inventors
- 👤 Hiroshi Kazino
- 👤 Takahiko Ito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:02
CPC Classifications
F; F16; F16B; F16B19/00; F16B19/02; F16B35/00; F16B35/04; F16B35/041; F16B35/044; F16B35/047
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
102 words
A self-aligning bolt, comprising: an externally threaded shank having a central axis and a root diameter; and a threadless eccentric pilot tip connected to the shank, said tip having a central axis offset from the axis of the shank, having a first threadless section of constant diameter less than the root diameter of the shank, having a periphery defined by said diameter disposed internally tangent to a circle defined by said root diameter, having a second threadless section which is tapered and extends between said shank and first section, and further having a chamfer on an end displaced from said threaded shank.
Claim 2
Dependent Claim
102 words
A self-aligning bolt, comprising: an externally threaded shank having a central axis and a root diameter; and a threadless eccentric pilot tip connected to the shank, said tip having a central axis offset from the axis of the shank, having a first threadless section of constant diameter less than the root diameter of the shank, having a periphery defined by said diameter disposed internally tangent to a circle defined by said root diameter, having a second threadless section which is tapered and extends between said shank and first section, and further having a chamfer on an end displaced from said threaded shank.
Claim 3
Dependent Claim
83 words
An integral self-aligning nut, comprising: a nut body having a top side and a seating side; a central internal threaded bore having a central axis and a root diameter; and a threadless eccentric counter bore disposed on the seating side of the nut and having a diameter and a central axis offset from the axis of the threaded bore, wherein the diameter of the counter bore defines a periphery externally tangent with a circle defined by the root diameter of the threaded bore.
Claim 4
Dependent Claim
83 words
An integral self-aligning nut, comprising: a nut body having a top side and a seating side; a central internal threaded bore having a central axis and a root diameter; and a threadless eccentric counter bore disposed on the seating side of the nut and having a diameter and a central axis offset from the axis of the threaded bore, wherein the diameter of the counter bore defines a periphery externally tangent with a circle defined by the root diameter of the threaded bore.
Claim 5
Dependent Claim
22 words
A self-aligning nut according to claim 2, further comprising a chamfer formed in the counter-bore adjacent the seating side of the nut.
References Cited (Backward Citations)
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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) | 1994-12-16 | 1995-06-17 | 1995-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-16 | 1999-06-17 | 1999-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-16 | 2003-06-17 | 2003-12-17 | $7700.00 | Window Closed / Lapsed |