No title available

• US 3,123,900 A
• Filed:
• Issued:
• Status: Expired due to Term

• Current Assignee: N/A
• Original Assignee: N/A
• Time in Patent Office: Days
• US Class Current: 29/890.14
• CPC Class Codes: B21D 53/00 Making other particular articles making wire fabrics B21F; making chains or chain parts B21L
• CPC Class Codes: F16L 55/04 Devices damping pulsations or vibrations in fluids F16L55/02 takes precedence
• CPC Class Codes: G01F 1/46 Pitot tubes
• CPC Class Codes: Y10T 29/49428 Gas and water specific plumbing component making
• CPC Class Codes: Y10T 29/49604 Filter
• CPC Class Codes: Y10T 29/49879 Spaced wall tube or receptacle
• CPC Class Codes: Y10T 29/49895 Associating parts by use of aligning means [e.g., use of a drift pin or a "fixture"]

Claims

1. A METHOD OF MAKING A LAMINAR FLOW ELEMENT, COMPRISING SUPERIMPOSING IN CONTACT TWO SUBSTANTIALLY COEXTENSIVE SHEETS OF METAL COMPRISING A FIRST SHEET OF PLANAR METAL AND A SECOND SHEET OF UNIFORMLY CORRUGATED METAL, SPIRALLY WINDING SAID SUPERIMPOSED SHEETS INTO LAMINAR FLOW ELEMENT WITH THE GENERATING ELEMENTS OF THE CORRUGATIONS EXTENDING PARALLEL TO EACH OTHER AND TO THE AXIS OF SAID SPIRAL WITH A FLOW PASSAGEWAY LOCATED BETWEEN EACH CORRUGATION AND SAID FIRST SHEET, HOLDING SAID SHEETS IN SPIRAL WOUND CONDITION AGAINST SUBSTANTIAL UNWINDING OF THE SPIRAL DURING THE VIBRATION STEP HEREAFTER, PLACING ONE SPIRAL FACE OF SAID FLOW ELEMENT ON A VIBRATING PLATE FOR VIBRATING SAID FLOW ELEMENT ALONG THE AXIS OF SAID SPIRAL FOR AXIALLY ALIGNING SAID SHEETS AND FOR CONTROLLING THE SHAPE OF SAID FLOW PASSAGEWAYS BY MOVEMENT BETWEEN SAID SHEETS ON THE PEAKS AND VALLEYS OF THE CORRUGATIONS, AXIALLY ALIGNING SAID SHEETS AND CONTROLLING THE SHAPE OF THE PASSAGEWAYS OF THE FLOW ELEMENT BY VIBRATING SAID FLOW ELEMENT ALONG THE AXIS OF SAID SPIRAL TO CAUSE RELATIVE MOVEMENT BETWEEN SAID SHEETS ON THE PEAKS AND VALLEYS OF THE CORRUGATIONS, AND BONDING SAID SHEETS TOGETHER TO GIVE SAID FLOW PASSAGEWAYS THEREOF SUBSTANTIALLY EQUAL SIZE AND DIMENSIONAL RIGIDITY.