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US3011644A Expired / Lapsed US ⏱️ 0.0 years remaining

Strainer assembly

Assignee: Rockwell Manufacturing Co
•
Filing: 1956-11-30
•
Granted: 1961-12-05
•
Expires: 1976-11-30
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Abstract

Abstract 826,310. Filters. ROCKWELL MANUFACTURING CO. Oct. 22, 1957 [Nov. 30, 1956], No. 32903/57. Class 46. The inner member of a screening basket 14, Fig. 4, consists of a fine screen 21 permanently secured to a ring 24 and to an angle ring 27 carrying an end disc 28 of the same material. This inner member is removably secured as by bolts 26 to a further ring 20 having tapered surfaces 23, 33, Fig. 1, and having secured to it an expanded-metal screen 22. The basket may be lifted by a spring handle 41 pivoted at 38 to the ring 20 and be lowered into a cylindrical casing 11, Fig. 1, intended for insertion in a pipeline. The lower part of the ring 20 is located between a surface 37 and a circumferentiallyshort lug 35, the looped end 39 of the spring handle is engaged under a surface 40 and the free end of the handle against a surface 43. A cover 18 is then secured in place, the action of the underside 44 of the cover on the spring handle 41 serving to force the smooth circular surface 36 of a flange 25 of ring 24, Fig. 4, into contact with the circular surface 37. In Fig. 5 the inlet 75 of the casing 74 is at right angles to the outlet 49 and the basket has a diametral spring 69 whose ends 71, 72 are located in channelled projections 57, 58, and which is pressed upon by the cover 55 to effect close contact at 36. A cup 65 to collect residue is secured to the ring 24.

Inventors

  • 👤 Thomas C Farrell
  • 👤 Paul A Mankin

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 09:20
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/24; B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/23; B01D29/88; B01D29/90; B01D29/902; B01D29/94; B01D29/96; F16L45/00; Y; Y10; Y10S; Y10S55/00; Y10S55/26

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US634953A Cited
US664280A Cited
US1284944A Cited
US1961498A Cited
US2379848A Cited
US2427320A Cited
US2801008A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1964-12-04 1965-06-05 1965-12-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1968-12-04 1969-06-05 1969-12-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1972-12-04 1973-06-05 1973-12-05 $7700.00 Window Closed / Lapsed

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