SADDLE CLAMP HAVING ELECTRICAL BONDING CHARACTER

• US 20120214328A1
• Filed: 10/26/2010
• Published: 08/23/2012
• Est. Priority Date: 10/30/2009
• Status: Active Grant

• Current Assignee: Illinois Tool Works Inc.
• Original Assignee: Illinois Tool Works Inc.
• Inventors: Downing, Mark L.
• Granted Patent: US 8,602,798 B2
• Time in Patent Office: Days
• US Class Current: 439/345
• CPC Class Codes: B64D 37/32 Safety measures not otherwise provided for, e.g. preventing explosive conditions extinguishing or preventing fires in aircraft A62C
• CPC Class Codes: F16L 3/00 Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets anchors for holding pipes on or under the ground F16L1/06; sound-damping supports F16L55/035; supports for insulated pipes F16L59/135
• CPC Class Codes: F16L 3/1091 with two members, the two members being fixed to each other with fastening members on each side
• CPC Class Codes: H01R 4/46 Clamping area between two screws placed side by side
• CPC Class Codes: H01R 4/643 for rigid cylindrical bodies

Abstract

A saddle clamp which incorporates internal electrical bonding elements adapted to maintain electrical contact with a clamped tube structure without transferring structural load between the tube and the electrical bonding components. The saddle clamp includes an inner tube contacting surface having at least one surface groove. At least one electrical contact element extends between portions of the inner tube contacting surface. The electrical contact element includes tube contact segment disposed in opposing relation to a portion of the surface groove. The electrical contact element is electrically connected to the mounting bracket to transmit electrical charge from the tube.

Claims

1. A saddle clamp providing electrical bonding with a tube secured in place within the saddle clamp, the saddle clamp comprising:

a base segment adapted for operative connection to a mounting bracket; and

an arch segment extending away from the base segment, the arch segment having an inner tube contacting surface, the inner tube contacting surface including at least one surface groove, wherein at least one window opening extends through the arch segment to define a passageway from the inner tube contacting surface to the an exterior of the arch segment; and

at least one electrical contact element extending between portions of the inner tube contacting surface, said at least one electrical contact element including a tube contact segment disposed in opposing relation to a portion of said at least one surface groove, and wherein said at least one electrical contact element further includes a proximal portion extending through said at least one window opening, the proximal portion being electrically connected to the mounting bracket to transmit electrical charge from the tube.

2. The saddle clamp as recited in claim 1, wherein the base segment includes a mounting platform and a support cradle having a trough profile.

3. The saddle clamp as recited in claim 2, wherein the support cradle is disposed in sliding relation at the interior of the arch segment with a lateral side of the support cradle disposed in opposing relation to said at least one window opening.

4. The saddle clamp as recited in claim 3, wherein the arch segment includes at least one platform projection extending outwardly away from said at least one window opening, and wherein the proximal portion of said at least one electrical contact element projects through said at least one window opening and is secured at said at least one platform projection by a coupling fastener extending through said at least one platform projection and operatively connected to the mounting bracket.

5. The saddle clamp as recited in claim 1, wherein said at least one electrical contact element is a metal strip of ribbon construction.

6. The saddle clamp as recited in claim 5, wherein said at least one electrical contact element includes an inwardly bowed tube contact segment extending between inner surfaces of the arch segment.

7. The saddle clamp as recited in claim 6, wherein the tube contact segment includes at least one longitudinal slot extending at least partially along the length of the tube contact segment.

8. The saddle clamp as recited in claim 5, wherein said at least one electrical contact element includes a substantially straight tube contact segment extending between inner surfaces of the arch segment.

9. The saddle clamp as recited in claim 8, wherein the tube contact segment includes at least one longitudinal slot extending at least partially along the length of the tube contact segment.

10. A saddle clamp providing electrical bonding with a tube secured in place within the saddle clamp, the saddle clamp comprising:

a base segment of polymeric material adapted for operative connection to a mounting bracket, the base segment including a mounting platform and a support cradle extending away from one side of the mounting platform, the support cradle having a trough profile including a concave tube support surface; and

an arch segment of polymeric material extending upwardly away from the base segment, the arch segment having an inner tube contacting surface having an upper curved portion with curvature opposite to the concave tube support surface at the support cradle and being disposed in opposing relation to the concave tube support surface at the support cradle, the inner tube contacting surface further having a pair of opposing substantially straight side portions extending away from either end of the upper curved portion towards the base segment, the inner tube contacting surface including a pair of circumferential surface grooves extending from the upper curved portion to corresponding window openings extending from the inner tube contacting surface to the an exterior of the arch segment; and

a pair of electrical contact elements in the form of resilient metal strips of ribbon construction extending in crossing relation between portions of the inner tube contacting surface, each of the electrical contact elements including a tube contact segment extending between the upper curved portion and an adjacent straight side portion of the inner tube contacting surface in opposing relation to a surface groove adapted to receive said segment therein, and wherein each of the electrical contact elements further includes a proximal portion extending through a window opening and secured in place by a coupling fastener extending between the base segment and the mounting bracket.

11. The saddle clamp as recited in claim 10, wherein the support cradle is disposed in sliding relation at the interior of the arch segment with lateral sides of the support cradle disposed in opposing relation to said window openings.

12. The saddle clamp as recited in claim 10, wherein the arch segment includes platform projections extending outwardly away from said window openings, and wherein each of the proximal ends of the electrical contact elements is secured at one of the platform projections by a coupling fastener extending through the platform projection and operatively connected to the mounting bracket.

13. The saddle clamp as recited in claim 10, wherein at least one of the electrical contact elements includes an inwardly bowed tube contact segment.

14. The saddle clamp as recited in claim 13, wherein the inwardly bowed tube contact segment includes at least one longitudinal slot extending at least partially along the length of the tube contact segment.

15. The saddle clamp as recited in claim 14, wherein an opposing one of the surface grooves includes a circumferentially disposed ridge adapted for receipt within the longitudinal slot when the tube contact segment is pressed into the opposing one of the surface grooves.

16. The saddle clamp as recited in claim 10, wherein at least one of the electrical contact elements includes a substantially straight tube contact segment.

17. The saddle clamp as recited in claim 16, wherein the substantially straight tube contact segment includes at least one longitudinal slot extending at least partially along the length of the tube contact segment.

18. The saddle clamp as recited in claim 17, wherein an opposing one of the surface grooves includes a circumferentially disposed ridge adapted for receipt within the longitudinal slot when the tube contact segment is pressed into the opposing one of the surface grooves.

19. A saddle clamp providing electrical bonding with a tube secured in place within the saddle clamp, the saddle clamp comprising:

a base segment of polymeric material adapted for operative connection to a mounting bracket, the base segment including a mounting platform and a support cradle extending away from one side of the mounting platform, the support cradle having a trough profile defined by a pair of lateral arm projections with a concave tube support surface disposed between the lateral arm projections, wherein the mounting platform includes at least one acceptance opening extending through the mounting platform adapted for receipt of a coupling fastener providing electrical connection with the mounting bracket; and

an arch segment of polymeric material extending upwardly away from the base segment, the arch segment having an inner tube contacting surface having an upper curved portion with curvature opposite to the concave tube support surface at the support cradle and being disposed in opposing relation to the concave tube support surface at the support cradle, the inner tube contacting surface further having a pair of opposing substantially straight side portions extending away from either end of the upper curved portion towards the base segment, the inner tube contacting surface including at least one surface groove extending at least partially along the upper curved portion and an adjacent straight side portion, and wherein the arch segment includes a pair of outwardly extending platform projections extending radially away from the exterior of the straight side portions, and wherein at least one of the platform projections includes at least one acceptance opening extending through the platform projection in alignement with the acceptance opening extending through the mounting platform for receipt of the coupling fastener providing electrical connection with the mounting bracket and wherein window openings extend through the straight side portions defining passageways from the inner tube contacting surface to the an exterior of the arch segment; and

a plurality of electrical contact elements extending in crossing relation between portions of the inner tube contacting surface, at least one of the electrical contact elements being in the form of resilient metal strip of ribbon construction including a tube contact segment extending between the upper curved portion and an adjacent straight side portion of the inner tube contacting surface in opposing relation to a surface groove adapted to receive said tube contact segment therein, and wherein said at least one of the electrical contact elements further includes a proximal portion extending through a window opening and secured in place by the coupling fastener.

20. The saddle clamp as recited in claim 19, wherein the surface groove has a shallow, flat-bottom profile with at least one longitudinal ridge running at least partially along the length of the surface groove and said at least one of the electrical contact elements includes an inwardly bowed tube contact segment having at least one longitudinal slot extending at least partially along the length of the tube contact segment adapted to receive said at least one longitudinal ridge when the tube contact segment is pressed into the surface groove.