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US 11,859,647 B2Granted
Fastener
AssigneeHilti Aktiengesellschaft
InventorsXiaolong Chu, Cheng Lin, Yixiang Liao, Xiaojian Huang, Man Liu
Life of this patent
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Abstract
A fastener includes a main body having a tubular portion and a split portion that extends from a lower end of the tubular portion, and longitudinally includes a tapered section that tapers in a direction towards the tubular portion. The fastener further includes an expansion sleeve annularly surrounding the split portion, wherein the expansion sleeve longitudinally extends to a lower end of the tapered section.
Claims13
A fastener, comprising:
- a main body with a through hole longitudinally formed therein, wherein the main body comprises:
- a tubular portion that defines walls surrounding an upper part of the through hole;
- and
- a split portion that extends from a lower end of the tubular portion, wherein the split portion longitudinally comprises a tapered section that tapers with a first taper in a direction towards the tubular portion and away from a base section that (a) tapers towards the tapered section with a second taper that is less than the first taper and (b) is located at a terminal distal end of the split portion opposite the tubular portion;
- and
- an expansion sleeve annularly surrounding the split portion, wherein the expansion sleeve longitudinally extends at least to a lower end of the tapered section.
3 more elements
A fastener, comprising:
- a main body with a through hole longitudinally formed therein, wherein the main body comprises:
- a tubular portion that defines walls surrounding an upper part of the through hole;
- and
- a split portion that extends from a lower end of the tubular portion, wherein the split portion longitudinally comprises a tapered section that tapers with a first taper in a direction towards the tubular portion and away from a base section that (a) tapers towards the tapered section with a second taper that is less than the first taper and (b) is located at a terminal distal end of the split portion opposite the tubular portion;
- and
- an expansion sleeve annularly surrounding the split portion, wherein the expansion sleeve longitudinally extends at least to a lower end of the tapered section after a plug is set into a lower part of the through hole.
3 more elements
A fastener, comprising:
- a main body with a through hole longitudinally formed therein, wherein the main body comprises:
- a tubular portion that defines walls surrounding an upper part of the through hole;
- and
- a split portion that extends from a lower end of the tubular portion, wherein the split portion longitudinally comprises a tapered section that tapers with a first taper in a direction towards the tubular portion and away from a base section that (a) tapers towards the tapered section with a second taper that is less than the first taper and (b) is located at a terminal distal end of the split portion opposite the tubular portion, and wherein the tapered section defines an external annular recess surrounding the split portion;
- and
- an expansion sleeve annularly surrounding the split portion and at least partially received in the recess, wherein the expansion sleeve longitudinally extends to or beyond a reference plane located between an upper end of the recess and a lower end of the tapered section and substantially perpendicular to a longitudinal axis of the main body and wherein a longitudinal distance between the reference plane and the lower end of the tapered section is equal to or less than 15% of a longitudinal distance between the upper end of the recess and the lower end of the tapered section.
3 more elements
Dependencies are inferred from the claim text.