Apparatus and method for screen tensioning
First Claim
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1. A frame for stretching screen fabric, the frame comprising:
- a locking strip; and
a frame member including a locking strip groove extending at least a portion of a length of the frame member, the locking strip groove including a central groove configured to receive the locking strip, a minor side groove having a minor depth and a groove wall, and a major side groove distal the central groove, the major side groove having a major depth greater than the minor depth of the minor side groove, a thickness of the locking strip plus a thickness of two layers of screen fabric being greater than a height of the groove wall.
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Abstract
A screen fabric frame is disclosed including a locking strip and a frame member. The frame member includes a locking strip groove extending at least a portion of a length of the frame member. The locking strip groove includes a central groove configured to receive the locking strip, a minor side groove having a minor depth, and a major side groove distal the central groove, the major side groove having a major depth greater than minor depth of the minor side groove.
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Citations
17 Claims
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1. A frame for stretching screen fabric, the frame comprising:
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a locking strip; and a frame member including a locking strip groove extending at least a portion of a length of the frame member, the locking strip groove including a central groove configured to receive the locking strip, a minor side groove having a minor depth and a groove wall, and a major side groove distal the central groove, the major side groove having a major depth greater than the minor depth of the minor side groove, a thickness of the locking strip plus a thickness of two layers of screen fabric being greater than a height of the groove wall. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A screen fabric tensioning member including a locking strip groove cross section comprising:
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a central portion configured to receive a screen fabric and a locking strip; a minor side groove having a sloping upper surface and a base surface, the minor side groove configured to bind a first portion of the screen fabric between the sloping upper surface of the minor side groove and an upper surface of the locking strip and to bind a second portion of the screen fabric between the base surface of the minor side groove and a lower surface of the locking strip; and a major side groove having a major depth, the major depth plus a width of the central groove greater than a width of the locking strip. - View Dependent Claims (12, 13, 14)
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15. A method for tensioning a screen fabric comprising:
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folding the screen fabric around a locking strip; inserting a first edge of the locking strip into a longitudinal groove of a screen tensioning member and urging the folded screen fabric into the longitudinal groove using the first edge of the locking strip; pushing the folded screen fabric into a major side groove having a major depth using the first edge of the locking strip; rotating the locking strip to an orientation about parallel with a base surface of the longitudinal groove; applying a tension to the screen fabric, the tension configured to urge a second edge of the locking strip into a minor side groove having an upper sloping surface, the width of the locking strip less than the major depth plus a width of the of a central groove; and wedging the locking strip and folded screen fabric between the upper sloping surface and a portion of the base surface within the minor side groove. - View Dependent Claims (16, 17)
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Specification