Patent US4569763A successfully refreshed from Google Patents.
US4569763A
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US
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Wire locking structure for a filter device
Assignee: Arai Machinery Corp
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Filing: 1984-08-07
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Granted: 1986-02-11
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Expires: 2004-08-07
Abstract
Abstract This invention relates to a wire locking structure for a filter device, in which an outer circumference of a cylinder body is provided with a screw thread portion. The screw thread portion is wrapped by a wire of isosceles triangle in section. An end of the wire is drawn into a recess and firmly supported in a U-shape by an insert member to be inserted in the recess, thereby a conventional welding means has been removed.
Inventors
- 👤 Koichi Arai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:00
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/08; E21B43/088; B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/44; B01D29/48; F; F16; F16B; F16B2200/00; F16B2200/69; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49874
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A wire locking structure for a filter device, comprising: a cylinder body having a plurality of passages formed on an outer circumference thereof, said plurality of passages communicating with a cavity of said cylinder; a screw thread portion formed on said outer circumference containing screw bottoms; a wire having an isosceles triangle cross-section wrapped around said screw thread portion by inserting a summit of said wire in said screw bottoms; a recess to draw an end portion of said wire thereinto by way of a last corner of said screw thread portion, said recess including a half counter-sunk hole; an insert member inserted in said recess, said insert member including a half counter-sunk hole and a U-shaped cutaway portion for receiving said wire; and a locking bolt screwed and locked in a regular counter-sunk bolt formed by combining said half counter-sunk hole of said recess with said half counter-sunk hole of said insert member.
Claim 2
Dependent Claim
154 words
A wire locking structure for a filter device, comprising: a cylinder body having a plurality of passages formed on an outer circumference thereof, said plurality of passages communicating with a cavity of said cylinder; a screw thread portion formed on said outer circumference containing screw bottoms; a wire having an isosceles triangle cross-section wrapped around said screw thread portion by inserting a summit of said wire in said screw bottoms; a recess to draw an end portion of said wire thereinto by way of a last corner of said screw thread portion, said recess including a half counter-sunk hole; an insert member inserted in said recess, said insert member including a half counter-sunk hole and a U-shaped cutaway portion for receiving said wire; and a locking bolt screwed and locked in a regular counter-sunk bolt formed by combining said half counter-sunk hole of said recess with said half counter-sunk hole of said insert member.
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) | 1989-02-10 | 1989-08-12 | 1990-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-10 | 1993-08-12 | 1994-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-10 | 1997-08-12 | 1998-02-11 | $7700.00 | Window Closed / Lapsed |