US4900206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nut with cover
Assignee: Aoyama Seisakusho Co Ltd
•
Filing: 1989-02-22
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Granted: 1990-02-13
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Expires: 2009-02-22
Abstract
Abstract A cover of synthetic resin is formed within a stepped recess of a nut adjacent the upper end of the internally threaded portion by injection molding. The cover includes a ring-like mounting frame positioned in the stepped recess, and a covering plate positioned inside the ring-like mounting frame and connected to it by a hinge portion of the cover. The ring-like mounting frame have an integral portion provided at the lower portion of the frame and firmly engaging a portion of the inner surface of the internally threaded portion.
Inventors
- 👤 Hiroshi Kazino
- 👤 Masaaki Ide
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:05
CPC Classifications
F; F16; F16B; F16B37/00; F16B37/04; F16B37/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
82 words
A nut with a cover, comprising: a main nut body having an internally threaded portion, and a stepped recess formed in the body adjacent the upper end of the internally threaded portion, the wall of the stepped recess being shaped to define an inward ledge; and a cover of synthetic resin formed within the stepped recess by injection molding, the cover including a ring-like mounting frame, and a covering plate connected to the mounting frame by means of an integral hinge portion.
Claim 2
Dependent Claim
82 words
A nut with a cover, comprising: a main nut body having an internally threaded portion, and a stepped recess formed in the body adjacent the upper end of the internally threaded portion, the wall of the stepped recess being shaped to define an inward ledge; and a cover of synthetic resin formed within the stepped recess by injection molding, the cover including a ring-like mounting frame, and a covering plate connected to the mounting frame by means of an integral hinge portion.
Claim 3
Dependent Claim
82 words
A nut with a cover, comprising: a main nut body having an internally threaded portion, a stepped recess formed in the body adjacent the upper surface of the internally threaded portion; and a cover of synthetic resin formed within the stepped recess by injection molding, the cover including a ring-like mounting frame having at the lower end thereof a ring-like reinforcement engaging the internally threaded portion, and a covering plate connected to the mounting frame by means of an integral hinge portion.
Claim 4
Dependent Claim
82 words
A nut with a cover, comprising: a main nut body having an internally threaded portion, a stepped recess formed in the body adjacent the upper surface of the internally threaded portion; and a cover of synthetic resin formed within the stepped recess by injection molding, the cover including a ring-like mounting frame having at the lower end thereof a ring-like reinforcement engaging the internally threaded portion, and a covering plate connected to the mounting frame by means of an integral hinge portion.
References Cited (Backward Citations)
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US3635272A
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US3726178A
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US4214505A
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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) | 1993-02-12 | 1993-08-14 | 1994-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-12 | 1997-08-14 | 1998-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-12 | 2001-08-14 | 2002-02-13 | $7700.00 | Window Closed / Lapsed |