Captive fastener system and retention member
First Claim
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1. A captive fastener system, comprising:
- a fastener including a head and a shank, at least a portion of said shank having threads; and
a fastener retention member including;
a cylindrical body having first and second ends and an axial opening between said first and second ends, said body having a circumferential direction around said body and an axial direction between said first and second ends;
a flange at one end of said cylindrical body extending radially outward from said axial opening;
at least one work piece engagement member adapted and arranged to engage a bore in a work piece; and
a plurality of inwardly extending dimples in said cylindrical body for frictionally engaging said fastener shank, said dimples being elongated in said axial direction of said body.
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Abstract
A captive fastener system having a fastener and a retention member is provided. The retention member includes a cylindrical body having a flange at one end thereof. Work piece retention members project outwardly of the body for securing the retention member in a bore of a work piece. A plurality of dimples project inwardly in the retention member, and are narrow in a circumferential direction and elongated in an axial direction of the body. The dimples frictionally engage a shank of the fastener, to hold the fastener in the retention member.
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Citations
20 Claims
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1. A captive fastener system, comprising:
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a fastener including a head and a shank, at least a portion of said shank having threads; and
a fastener retention member including;
a cylindrical body having first and second ends and an axial opening between said first and second ends, said body having a circumferential direction around said body and an axial direction between said first and second ends;
a flange at one end of said cylindrical body extending radially outward from said axial opening;
at least one work piece engagement member adapted and arranged to engage a bore in a work piece; and
a plurality of inwardly extending dimples in said cylindrical body for frictionally engaging said fastener shank, said dimples being elongated in said axial direction of said body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A fastener retention member comprising:
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a cylindrical body having a first end and a second end, an axis and an axial opening therethrough between said first end and said second end;
at least one inwardly extending, elongated dimple in said body, said at least one dimple being elongated generally in a direction between said first and second ends of said body; and
an outwardly extending flange at one said end of said cylindrical body. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A fastener retention member comprising:
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a substantially cylindrical body having a first end and a second end, and an axial opening between said first end and said second end, said body having a circumferential direction around said axial opening and an axial direction between said first and second ends;
a flange extending outwardly of said body at one said end thereof;
a plurality of outwardly extending tabs formed in said wall; and
a plurality of inwardly extending dimples formed in said wall, each said dimple being narrow in said circumferential direction of said cylindrical body and being elongated in said axial direction of said cylindrical body. - View Dependent Claims (19, 20)
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Specification