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US 5,725,343 AGranted
Sealing fastener
AssigneeEustathios Vassiliou
InventorEdward John Smith
Life of this patent
Estimating the term…
Abstract
A sealing fastener, which expands by the insertion of preferably a screw. The fastener comprises a substantially flat and two expandable legs. The head has an upper side and a lower side, preferably separated by a gap. The fastener has further an elastic body molded at least on the lower surface of the head. A large unexpected improvement is achieved by having the elastic body also molded in the gap between the upper surface and the lower surface.
Claims43
A fastener comprising:
- (a) a substantially flat head portion having a perimeter, an upper side, and a lower side, the upper side having a hole, the hole having a first diameter and a first axis, the first axis being substantially perpendicular to the substantially flat head portion;
- (b) a neck having an opening and two substantially flat neck portions, the neck extending from the lower side of the substantially flat head portion at a substantially right angle with respect to the substantially flat head portion;
- (c) two substantially flat legs extending from the neck, each leg having an inner surface, the two surfaces of the two legs being at an initial substantial contact with each other, the legs being adapted to expand in opposite direction upon insertion through the hole of an expanding member;
- (d) a funnel configuration at a leg region where the legs start extending from the neck, the funnel having a second axis substantially coinciding with the first axis;
- and
- (e) an elastic body integrally molded at the lower side of the substantially flat head portion wherein the elastic body is selected from a group comprising plastisol, polyurethane, and a mixture thereof.
3 more elements
A fastener comprising:
- (a) a substantially flat head portion having a perimeter, an upper side, and a lower side, the upper side having a hole, the hole having a first diameter and a first axis, the first axis being substantially perpendicular to the substantially flat head portion;
- (b) a neck having an opening and two substantially flat neck portions, the neck extending from the lower side of the substantially flat head portion at a substantially right angle with respect to the substantially flat head portion;
- (c) two substantially flat legs extending from the neck, each leg having an inner surface, the two surfaces of the two legs being at an initial substantial contact with each other, the legs being adapted to expand in opposite direction upon insertion through the hole of an expanding member;
- (d) a funnel configuration at a leg region where the legs start extending from the neck, the funnel having a second axis substantially coinciding with the first axis;
- and
- (e) an elastic body integrally molded at the lower side of the substantially flat head portion, wherein the upper side and the lower side of the substantially flat head are separated by a gap, and the elastic body is further molded within the gap.
3 more elements
A fastener comprising:
- (a) a substantially flat head portion having a perimeter, an upper side, and a lower side, the upper side having a hole, the hole having a first diameter and a first axis, the first axis being substantially perpendicular to the substantially flat head portion;
- (b) a neck having an opening and two substantially flat neck portions, the neck extending from the lower side of the substantially flat head portion at a substantially right angle with respect to the substantially flat head portion;
- (c) two substantially flat legs extending from the neck, each leg having an inner surface, the two surfaces of the two legs being at an initial substantial contact with each other, the legs being adapted to expand in opposite direction upon insertion through the hole of an expanding member, the expanding member being a screw having threads and a root, the root having a second diameter;
- (d) a funnel configuration at a leg region where the legs start extending from the neck, the funnel having a second axis substantially coinciding with the first axis;
- and
- (e) an elastic body integrally molded at the lower side of the substantially flat head portion the elastic body including a depression in the vicinity of the hole, the depression having
- a third axis substantially coinciding with the first and the second axis;
- and
- a third diameter smaller than the second diameter.
6 more elements
An assembly of two objects connected substantially in a water-tight mode with a fastener, the fastener comprising:
- (a) a substantially flat head portion having a perimeter, an upper side, and a lower side, the upper side having a hole, the hole having a first diameter and a first axis, the first axis being substantially perpendicular to the substantially flat head portion;
- (b) a neck having an opening and two substantially flat neck portions, the neck extending from the lower side of the substantially flat head portion at a substantially right angle with respect to the substantially flat head portion;
- (c) two substantially flat legs extending from the neck, each leg having an inner surface, the two surfaces of the two legs being at an initial substantial contact with each other, the legs being adapted to expand in opposite direction upon insertion through the hole of an expanding member;
- (d) a funnel configuration at a leg region where the legs start extending from the neck, the funnel having a second axis substantially coinciding with the first axis;
- and
- (e) an elastic body integrally molded at the lower side of the substantially flat head portion, wherein the elastic body is selected from a group comprising plastisol, polyurethane, and a mixture thereof.
3 more elements
An assembly of two objects connected substantially in a water-tight mode with a fastener, the fastener comprising:
- (a) a substantially flat head portion having a perimeter, an upper side, and a lower side, the upper side having a hole, the hole having a first diameter and a first axis, the first axis being substantially perpendicular to the substantially flat head portion;
- (b) a neck having an opening and two substantially flat neck portions, the neck extending from the lower side of the substantially flat head portion at a substantially right angle with respect to the substantially flat head portion;
- (c) two substantially flat legs extending from the neck, each leg having an inner surface, the two surfaces of the two legs being at an initial substantial contact with each other, the legs being adapted to expand in opposite direction upon insertion through the hole of an expanding member;
- (d) a funnel configuration at a leg region where the legs start extending from the neck, the funnel having a second axis substantially coinciding with the first axis;
- and
- (e) an elastic body integrally molded at the lower side of the substantially flat head portion, wherein the upper side and the lower side of the substantially flat head are separated by a gap, and the elastic body is further molded within the gap.
3 more elements
Dependencies are inferred from the claim text.