Seal for a joint or juncture – Seal between fixed parts or static contact against... – Contact seal for a pipe – conduit – or cable
Reexamination Certificate
1999-05-13
2001-03-20
Dayoan, B. (Department: 3628)
Seal for a joint or juncture
Seal between fixed parts or static contact against...
Contact seal for a pipe, conduit, or cable
C277S590000, C277S314000
Reexamination Certificate
active
06203023
ABSTRACT:
The invention relates to a cable inlet for electric and/or optical cables having at least one electric wire, wherein the wires of the cable are connected to contact elements in accordance with the axial connection method and wherein a pressure screw is provided which can be screwed to an accommodating housing and wherein a sealing insert is provided which can be actuated by the pressure screw.
Such cable inlets provide for the strain relief and sealing of the cable. The strain relief must ensure that no axial tensile strain occurs in the wires, in particular at the connection points of the wires of the cable.
DE 42 30 138 A1 has disclosed a cable inlet for electric cables wherein the cables are connected to axially-contacting contact elements and wherein a pressure screw is provided which can be screwed to an accommodating housing and wherein a sealing insert is provided which can be actuated by the pressure screw.
Additionally, DE 296 12 407 U1 has disclosed a cable inlet for electric cables wherein a pressure screw is provided which can be screwed to an accommodating housing and wherein a sealing insert is provided which can be actuated by the pressure screw. In the case of this cable inlet the sealing insert and pressure screw possess a step.
Additionally, GB 2 073 508 A has disclosed a cable inlet for electric cables wherein a pressure screw is provided which can be screwed to an accommodating housing and wherein a sealing insert is provided which can be actuated by the pressure screw. Here the sealing insert has a stop which is adapted to a step in the pressure screw, and on its outer diameter on the cable insertion side the sealing insert is provided with a bevel which is adapted to a bevel of the pressure screw, the angle of the bevel of the pressure screw being designed to be more acute relative to the longitudinal axis.
Additionally, DE 43 25 420 A1 has disclosed a cable gland for electric cables wherein a slip ring is provided between a pressure screw and a sealing insert.
Additionally, DE 196 15 603 A1 has disclosed a cable gland for electric cables which is provided with contact rings consisting of electrically conductive material for contacting with shielding braiding of the cable.
The known cable inlets are not capable of transmitting axial contacting forces.
The object of the invention is to develop a cable inlet of the type referred to in the introduction such that in addition to its sealing- and strain relief function following the completion of the cable insertion, the sealing insert of the cable inlet also transmits axial forces during the connection and contacting phase.
This object is achieved in that the sealing insert has a peripheral step which is adapted to a peripheral step in the pressure screw and that on its outer diameter on the cable insertion side the sealing insert has a conical bevel which is adapted to a conical bevel of the pressure screw, the angle of the conical bevel of the pressure screw being designed to be more acute relative to the longitudinal axis.
Advantageous developments of the invention are described in claims
2
to
6
.
The advantages attained by means of the invention consist in particular in that the sealing and strain relief of a cable inlet normally composed of two parts can be implemented using only one element. Furthermore, due to its structural design the described sealing element is capable of transmitting axial forces.
REFERENCES:
patent: 4367967 (1983-01-01), Albert
patent: 5626486 (1997-05-01), Shelly et al.
patent: 5700012 (1997-12-01), Froehlich et al.
patent: 5977484 (1999-11-01), Jones et al.
patent: 2 073 508 (1981-10-01), None
patent: 42 30 138 A1 (1994-03-01), None
patent: 43 25 420 A1 (1995-02-01), None
patent: 296 12 407 U1 (1996-10-01), None
patent: 196 15 603 A1 (1997-10-01), None
Brenner Achim
Harting Dietmar
Lambrecht Heinz
Nowacki Horst
Schreier Stephan
Conley Frederick
Cook Alex McFarron Manzo Cummings & Mehler, Ltd.
Dayoan B.
Harting KGAA
LandOfFree
Cable inlet does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cable inlet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cable inlet will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2514209