1. A sealing system configured to seal a housing, the housing having a pressurizable stroke space in relation to a movable rod, the pressurizable stroke space is formed about an axis, the sealing system comprising a seal including:
a) a first dynamic sealing portion configured to seal between the seal and the rod, and
b) a second static sealing portion configured to seal between the seal and the housing,
c) the first and the second sealing portions formed integrally with each other,
d) the first sealing portion merges via a material thin point into the second sealing portion to suppress a flow of a sealing material from the second sealing portion into the first sealing portion when pressurized.
2. The sealing system as claimed in claim 1, wherein the second sealing portion is surrounded in a cross section apart from the material thin point on all sides by the housing and a press-on element in order to build up a predetermined pressure in the second sealing portion.
3. The sealing system as claimed in claim 1, wherein the material thin point has a thickness of less than 0.5 mm.
4. The sealing system as claimed in claim 1, wherein the material thin point has a thickness of less than 0.1 mm.
5. The sealing system as claimed in claim 1, wherein the material thin point has a thickness of less than 0.05 mm.
6. The sealing system as claimed in claim 1, wherein the material thin point encircles the axis as a ring.
7. The sealing system as claimed in claim 6, wherein the material thin point includes a rectangular cross section.
8. The sealing system as claimed in claim 3, wherein the thickness is a smallest distance between two opposite boundary lines in a cross section of the material thin point where the two opposite boundary lines extend perpendicularly to the axis.
9. The sealing system as claimed in claim 1, wherein the first sealing portion extends parallel to the axis and, on an outer side thereof facing away from the rod, has a compression volume connected to the stroke space, in which the first sealing portion presses against the rod at a pressure prevailing in the stroke space.
10. A method for installing a sealing system configured to seal a housing, the housing having a pressurizable stroke space in relation to a movable rod, the pressurizable stroke space is formed about an axis, the sealing system comprising a seal including:
a) a first dynamic sealing portion configured to seal between the seal and the rod, and
b) a second static sealing portion configured to seal between the seal and the housing,
c) the first and the second sealing portions formed integrally with each other,
d) the first sealing portion merges via a material thin point into the second sealing portion to suppress a flow of a sealing material from the second sealing portion into the first sealing portion when pressurized, the method comprising:
i) arranging the seal in a sealing seat where the sealing seat is formed in the housing,
ii) pressing the seal into the sealing seat with a material thin point being produced or dimensionally stabilized between the first and the second sealing portion,
iii) prestressing the second sealing portion, which is surrounded on all sides in a cross section apart from the material sealing point, by pressurization in such a manner that said second sealing portion, by means of plastic deformation, completely fills the space available thereto.
11. The method as claimed in claim 10 further comprising: clamping the second sealing portion and elastically compressing without a material thereof flowing through the thin point.
12. The method as claimed in claim 10 further comprising: providing a first sealing portion on an inner side facing the rod with a sliding element, of which a portion is pressed in when the seal is pressed into the first sealing portion.
13. The method as claimed claim 10 further comprising: during the pressing the seal, subjecting the first portion and the second sealing portion to a pressing-in force parallel to the axis.
14. The method as claimed in claim 10 further comprising: during the pressing the seal, elastically or plastically deforming the first sealing portion with a press-on force directed radially inward with respect to the rod.
15. The method as claimed in claim 10 further comprising: during the pressing the seal, elastically deforming the second sealing portion with a press-on force counter to an enclosure.
16. A sealing system configured to seal a housing, the housing having a pressurizable stroke space in relation to a movable rod, the pressurizable stroke space is formed about an axis, the sealing system comprising a seal including:
a) a first dynamic sealing portion configured to seal between the seal and the rod, and
b) a second static sealing portion configured to seal between the seal and the housing,
c) the first and the second sealing portions formed integrally with each other,
d) a press-on element including an annular projection configured to subject the seal to a press-on force in an axial direction to displace a sealing material of the seal radially in a plastic or elastic manner so that the annular projection produces a material thin point, in which the first sealing portion merges via the material thin point into the second sealing portion to suppress a flow of a sealing material from the second sealing portion into the first sealing portion when pressurized.
17. The sealing system of claim 16 further comprising: a sliding element configured to be pressed into a region of the first sealing portion to form a form-fitting connection in the axial direction between the first sealing portion and the sliding element.
18. The sealing system as claimed in claim 16, wherein the material thin point has a thickness of less than 0.5 mm.
19. The sealing system as claimed in claim 16, wherein the material thin point encircles the axis as a ring and the material thin point includes a rectangular cross section.
20. The sealing system as claimed in claim 19, wherein the thickness is a smallest distance between two opposite boundary lines in a cross section of the material thin point where the two opposite boundary lines extend perpendicularly to the axis.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method for ensuring a connection to a configuration protocol server on a data network by a customer premises equipment via a network connection, the method comprising the steps of:
issuing a request for a customer premises equipment network address from the customer premises equipment to the configuration protocol server via the network connection;
the network connection determining whether a connection can be made to the configuration protocol server, and if not, responding to the customer premises equipment by sending a temporary network address and a lease time to the customer premises equipment, whereby the lease time limits the time of validity of the temporary network address;
issuing a request to renew the temporary network address when the lease time expires;
the network connection determining whether a connection can be made to the configuration protocol server, and if not, responding to the customer premises equipment by sending an acknowledge message;
when the network connection determines that the connection can be made to the configuration protocol, the network connection sending a NACK message declining to acknowledge the request to renew the temporary network address;
the customer premises equipment receiving the NACK message and sending a request for the customer premises equipment network address; and
the network connection communicating the request for the customer premises equipment network address to the configuration protocol server.
2. A method as claimed in claim 1, wherein the network connection comprises a communications device for connecting the customer premises equipment to a local network, the local network being connected to the data network via a network interconnection device.
3. A method as claimed in claim 2, wherein the communications device further comprises a temporary configuration server.
4. A method as claimed in claim 2, wherein the network interconnection device further comprises a temporary configuration server.
5. A method as claimed in claim 1, wherein the network connection comprises a communications device for connecting the customer premises equipment to a local network, the local network being connected to the data network via a network interconnection device.
6. A method as claimed in claim 5, wherein the communications device further comprises a temporary configuration server.
7. A method as claimed in claim 5, wherein the network interconnection device further comprises a temporary configuration server.
8. A method for ensuring a connection to a configuration protocol server on a data network by a customer premises equipment via a network connection, the method comprising the steps of:
issuing a request for a customer premises equipment network address from the customer premises equipment to the configuration protocol server via the network connection;
the network connection determining whether a connection can be made to the configuration protocol server, and if not, responding to the customer premises equipment by sending a temporary network address and a lease time to the customer premises equipment, whereby the lease time limits the time of validity of the temporary network address;
issuing a request to renew the temporary network address when the lease time expires; and
the network connection determining whether a connection can be made to the configuration protocol server, and if not, responding to the customer premises equipment by sending an acknowledge message.
9. A method as claimed in claim 8, wherein the network connection comprises a communications device for connecting the customer premises equipment to a local network, the local network being connected to the data network via a network interconnection device.
10. A method as claimed in claim 9, wherein the communications device includes a cable modem, the local network includes a cable network and the network interconnection device includes a cable modem termination system.
11. A method as claimed in claim 8, wherein the configuration protocol server is a dynamic host configuration protocol (DHCP) server.
12. A method as claimed in claim 8, wherein the customer premises equipment network address used by the customer premises equipment is an Internet protocol (IP) address.
13. A method as claimed in claim 8, wherein the lease time is less than 10 seconds.
14. A method as claimed in claim 8, wherein the data network includes a connection to the Internet.
15. A method for ensuring a connection to a configuration protocol server on a data network by a customer premises equipment via a network connection, the method comprising the steps of:
issuing a request for a customer premises equipment network address from the customer premises equipment to the configuration protocol server via the network connection;
the network connection determining whether a connection can be made to the configuration protocol server, and if not, responding to the customer premises equipment by sending a temporary network address and a lease time to the customer premises equipment, whereby the lease time limits the time of validity of the temporary network address;
issuing a request to renew the temporary network address when the lease time expires;
the network connection determining whether a connection can be made to the configuration protocol server, and if not, responding to the customer premises equipment by sending an acknowledge message;
when the network connection determines that the connection can be made to the configuration protocol, the network connection sending a NACK message declining to acknowledge the request to renew the temporary network address;
the customer premises equipment receiving the NACK message and sending a request for the customer premises equipment network address; and
the network connection communicating the request for the customer premises equipment network address to the configuration protocol server.
16. A method as claimed in claim 15, wherein the network connection comprises a communications device for connecting the customer premises equipment to a local network, the local network being connected to the data network via a network interconnection device.
17. A method as claimed in claim 16, wherein the communications device includes a cable modem, the local network includes a cable network and the network interconnection device includes a cable modem termination system.
18. A method as claimed in claim 15, wherein the configuration protocol server is a dynamic host configuration protocol (DHCP) server.
19. A method as claimed in claim 15, wherein the customer premises equipment network address used by the customer premises equipment is an Internet protocol (IP) address.
20. A method as claimed in claim 15, wherein the lease time is less than 10 seconds.
21. A method as claimed in claim 15, wherein the data network includes a connection to the Internet.