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US 6,350,093 B1Granted
Electrically insulated threaded fastener anchor
AssigneeCXT Incorporated
InventorsRick W. Petersen, Steven R. Mattson
Life of this patent
Estimating the term…
Abstract
An electrically insulated anchor device is described, comprising a rigid elongated metal sleeve including an external surface that leads from an open top end to a bottom end. A longitudinal internal bore is formed within the sleeve with a bore wall spaced from the external surface by a sleeve wall thickness dimension. An electrically insulative polymer insert with an external surface engages the bore wall within the sleeve. The insert further includes a fastener receiving bore defined by a fastener receiving wall spaced from the external insert surface by an insert wall thickness dimension. The sleeve wall thickness dimension is substantially greater than the insert wall thickness dimension.
Claims20
An electrically insulated anchor device, comprising:
- a rigid elongated metal sleeve including an external surface leading from an open top end to a bottom end;
- a longitudinal internal bore formed within the sleeve and including a bore wall spaced from the external surface by a sleeve wall thickness dimension;
- an electrically insulative polymer insert including an external insert surface engaging the bore wall within the sleeve;
- the insert further including a fastener receiving bore defined by a fastener receiving wall spaced from the external insert surface by an insert wall thickness dimension;
- and
- wherein the sleeve wall thickness dimension is substantially greater than the insert wall thickness dimension.
3 more elements
An electrically insulated anchor device, comprising:
- a rigid elongated metal sleeve including an external surface leading from an open top end to a bottom end;
- a longitudinal internal bore formed within the sleeve and including a bore wall spaced from the external surface by a sleeve wall thickness dimension;
- an electrically insulative polymer insert including an external insert surface engaging the bore wall within the sleeve;
- the insert further including a fastener receiving bore defined by a fastener receiving wall spaced from the external insert surface by an insert wall thickness dimension;
- wherein the sleeve wall thickness dimension is substantially greater than the insert wall thickness dimension;
- and
- an anti-rotation lug formed on the sleeve at the bottom end thereof, and projecting outwardly from the external surface of the sleeve.
4 more elements
An electrically insulated anchor device, comprising:
- a rigid elongated metal sleeve including an external surface leading from an open top end to a bottom end;
- a longitudinal internal bore formed within the sleeve and including a bore wall spaced from the external surface by a sleeve wall thickness dimension;
- an electrically insulative polymer insert including an external insert surface engaging the bore wall within the sleeve;
- the insert further including a fastener receiving bore defined by a fastener receiving wall spaced from the external insert surface by an insert wall thickness dimension;
- wherein the sleeve wall thickness dimension is substantially greater than the insert wall thickness dimension;
- and
- wherein the insert wall thickness dimension is approximately one-half of the sleeve wall thickness dimension.
4 more elements
An electrically insulated anchor device, comprising:
- a rigid elongated metal sleeve including an external surface leading from an open top end to a bottom end;
- a longitudinal internal bore formed within the sleeve and including a bore wall spaced from the external surface by a sleeve wall thickness dimension;
- an electrically insulative polymer insert including an external insert surface engaging the bore wall within the sleeve;
- the insert further including a fastener receiving bore defined by a fastener receiving wall spaced from the external insert surface by an insert wall thickness dimension;
- wherein the sleeve wall thickness dimension is substantially greater than the insert wall thickness dimension;
- and
- wherein the insert includes a flange at a top end thereof, overlapping the top end of the sleeve.
4 more elements
An electrically insulated anchor device, comprising:
- a rigid elongated metal sleeve formed along an axis and including an axial length dimension between an open top end and a bottom end;
- the metal sleeve including a substantially axially smooth external surface disposed between the top and bottom ends;
- wherein the substantially axially smooth external surface includes an axial length dimension that is greater than approximately one-half of the length dimension;
- a longitudinal insert receiving bore formed within the sleeve;
- and
- an electrically insulative polymer insert releasably engaging the sleeve within the insert receiving bore and including a fastener receiving bore.
3 more elements
An electrically insulated anchor device, comprising:
- a rigid elongated metal sleeve formed along an axis and including a length dimension between an open top end and a bottom end;
- the metal sleeve including a substantially axially smooth external surface disposed between the top and bottom ends, and a longitudinal insert receiving bore disposed radially inward of the external surface;
- wherein the substantially axially smooth external surface extends at least approximately one-half of the length dimension of the sleeve;
- an anti-rotation surface formed along the sleeve along a portion thereof axially spaced from the external surface;
- an electrically insulative polymer insert disposed within the insert receiving bore and including a fastener receiving bore and an external sleeve engaging surface received by the insert receiving bore of the metal sleeve;
- wherein the insert receiving bore is defined by a bore wall spaced from the external surface by a sleeve wall thickness dimension;
- wherein the fastener receiving bore is defined by a fastener receiving wall spaced from the external sleeve engaging surface by an insert wall thickness dimension;
- and
- wherein the sleeve wall thickness dimension is greater than the insert wall thickness dimension.
6 more elements
Dependencies are inferred from the claim text.