US3828631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutting die and process
Assignee: MILLER M GmbH
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Filing: 1973-01-10
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Granted: 1974-08-13
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Expires: 1993-01-10
Abstract
Abstract The cutting die is made from strip steel and comprises a die blade having a cutting edge formed with sawteeth and chamfered surfaces extending along said cutting edge on opposite sides of said blade. To cut through a material which comprises a fabric having first filament portions extending in a predetermined direction and second filament portions extending transversely to said predetermined direction, said material is cut into at a plurality of discrete points which are spaced apart on an intended line of cut extending in said predetermined direction and said first filament portions which are disposed adjacent to said line of cut are pushed laterally away from said line of cut. At the same time, the cutting into said material is continued along said line of cut until said second filament portions extending across said line of cut have been severed.
Inventors
- 👤 E Spengler
- 👤 R Stursberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:02
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/38; B26F1/44; C; C14; C14B; C14B5/00; C14B5/02; D; D06; D06H; D06H7/00; D06H7/24; B26F2001/4472; B26F2001/4481; B26F2210/00; B26F2210/12; B26F2210/16; Y; Y10; Y10T; Y10T83/00; Y10T83/04; Y10T83/0405; Y10T83/0419; Y10T83/0433; Y10T83/343; Y10T83/869; Y10T83/8821; Y10T83/8854; Y10T83/929; Y10T83/9454
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
257 words
A process of cutting a material which comprises a fabric having first filament portions extending in a predetermined direction and second filament portions extending transversely to the predetermined direction of the first filament portions, cutting the material in a line extending in the predetermined direction of the first filament portions by first inserting a continuous cutting member into the material and making a plurality of spaced punctiformed openings aligned in the predetermined direction of the first filament portions, continuing the passage of the cutting member through the punctiform openings and directing the first filaments adjacent the cutting member laterally away from the line of the punctiform openings and gradually increasing the width of the punctiform openings on both sides in the predetermined direction of the first filament portions, first directing the first filament portions laterally along oppositely directed first planar surfaces each forming an acute angle with a plane extending perpendicularly to the material along the cutting line, continuing the lateral displacement of the first filaments along oppositely directed second planar surfaces each forming a continuation of one of the first planar surfaces and also forming an acute angle with the plane extending perpendicularly to the material along the cutting line and with the second planar surfaces forming a smaller acute angle with the prependicular plane than the first planar surfaces, and continuing the passage of the second planar surfaces through the material and widening the individual openings until adjacent openings join to form one continuous opening and thereby cutting the material without severing the first filaments.
Claim 2
Dependent Claim
257 words
A process of cutting a material which comprises a fabric having first filament portions extending in a predetermined direction and second filament portions extending transversely to the predetermined direction of the first filament portions, cutting the material in a line extending in the predetermined direction of the first filament portions by first inserting a continuous cutting member into the material and making a plurality of spaced punctiformed openings aligned in the predetermined direction of the first filament portions, continuing the passage of the cutting member through the punctiform openings and directing the first filaments adjacent the cutting member laterally away from the line of the punctiform openings and gradually increasing the width of the punctiform openings on both sides in the predetermined direction of the first filament portions, first directing the first filament portions laterally along oppositely directed first planar surfaces each forming an acute angle with a plane extending perpendicularly to the material along the cutting line, continuing the lateral displacement of the first filaments along oppositely directed second planar surfaces each forming a continuation of one of the first planar surfaces and also forming an acute angle with the plane extending perpendicularly to the material along the cutting line and with the second planar surfaces forming a smaller acute angle with the prependicular plane than the first planar surfaces, and continuing the passage of the second planar surfaces through the material and widening the individual openings until adjacent openings join to form one continuous opening and thereby cutting the material without severing the first filaments.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |