Fastener with attached compression limiting sleeve
View Patent ↗A fastener system that includes a fastener, a compression-limiting sleeve, and a retainer which generally retains the compression-limiting sleeve on the fastener. By providing that the compression-limiting sleeve is not staked to the fastener, existing technology can be used, and no extra staking processing step needs to be performed. The fastener may comprise a conventional metal threaded screw or bolt, possibly having a recess in its head for receiving a driver. Preferably, the compression-limiting sleeve is cold headed as opposed to being stamped, and preferably includes a counter bore which assures that an end of the retainer is below an end surface of the compression-limiting sleeve. Preferably, the retainer is formed of a thermoplastic elastomer or another suitable material.
1. A stand-alone, installable fastener system comprising: a fastener having a thread thereon; a compression-limiting sleeve having an end surface; and a retainer comprising a thermoplastic elastomer which engages the compression-limiting sleeve and which comprises parallel internal walls which extend from one end of the retainer to an opposite end of the retainer, wherein the parallel internal walls engage the thread on the fastener such that the fastener floats longitudinally to facilitate alignment pre-installation, wherein the compression-limiting sleeve comprises a counter bore, wherein the retainer engages the counter bore of the compression-limiting sleeve and the thread on the fastener such that the retainer retains the compression-limiting sleeve on the fastener, wherein the counter bore comprises an internal shoulder, wherein a space is provided between the internal shoulder of the counter bore of the compression-limiting sleeve and the one end of the retainer, said space configured to provide that the opposite end of the retainer is disposed below the end surface of the compression-limiting sleeve after installation.
2. A stand-alone, installable fastener system as recited in claim 1 , wherein the retainer is positioned between the fastener and the compression-limiting sleeve.
3. A stand-alone, installable fastener system as recited in claim 1 , wherein the retainer is positioned between the fastener and the compression-limiting sleeve, and the retainer contacts the fastener and contacts the compression-limiting sleeve.
4. A stand-alone, installable fastener system as recited in claim 1 , wherein the fastener comprises a metal threaded fastener.
5. A stand-alone, installable fastener system as recited in claim 1 , wherein the fastener comprises a head having a recess therein.
6. A stand-alone, installable fastener system as recited in claim 1 , wherein the compression-limiting sleeve is metal.
7. A stand-alone, installable fastener system as recited in claim 1 , wherein the compression-limiting sleeve comprises a lip proximate the end surface.
8. A stand-alone, installable fastener system as recited in claim 1 , wherein the compression-limiting sleeve is cold headed.
9. A stand-alone, installable fastener system as recited in claim 1 , wherein the retainer comprises a bore through which the fastener extends.
10. A stand-alone, installable fastener system as recited in claim 1 , wherein the fastener comprises a head, wherein both the compression-limiting sleeve and the retainer contact the head of the fastener.
11. A stand-alone, installable fastener system as recited in claim 1 , wherein the compression-limiting sleeve has an interior surface, and the retainer contacts the interior surface of the compression-limiting sleeve.
12. A stand-alone, installable fastener system as recited in claim 1 , wherein the fastener comprises a head and an end which is opposite the head, wherein the end of the fastener extends past the end surface of the compression-limiting sleeve, wherein both the compression-limiting sleeve and the retainer contact the head of the fastener.
13. A stand-alone, installable fastener system as recited in claim 1 , wherein the fastener comprises a head and an end which is opposite the head, wherein the end of the fastener extends past the end surface of the compression-limiting sleeve, wherein both the compression-limiting sleeve and the retainer contact the head of the fastener, wherein the compression-limiting sleeve has an interior surface, and the retainer contacts the interior surface of the compression-limiting sleeve.
14. A stand-alone, installable fastener system as recited in claim 1 , wherein the retainer comprises parallel external walls which extend from the one end of the retainer to the opposite end of the retainer, wherein the parallel external walls engage an internal surface of the compression-limiting sleeve.