Joints and connections – With indicator or inspection means
Reexamination Certificate
1997-09-18
2001-05-15
Reichard, Lynne A. (Department: 3629)
Joints and connections
With indicator or inspection means
C403S399000, C403S396000
Reexamination Certificate
active
06231261
ABSTRACT:
The present invention relates to a clamp for clamping or bracing high-frequency cables, which clamp is adapted to be provided on a holding device and which clamp comprises a spring device for clamping at least one high-frequency cable to the holding device, whereby the spring device includes a pressure means and a spring means, whereby the pressure means is adapted to engage the high-frequency cable, whereby the spring means is provided to be stretched so that it in a stretched position brings the pressure means to clamp or brace the high-frequency cable to the holding device with a predetermined spring force, and whereby an indicating device is provided to permit indication of whether the spring means has been stretched to a stretched position at which said spring means clamps the high-frequency cable to the holding device with a predetermined spring force.
A clamp for clamping or bracing cables is known from the publication DE 2 053 828. However, this clamp has no indicating device which permits reading or determination of when the clamp is tightened so that it sits neither too loose nor too tight.
The publication SE 443 434 relates to a clamp for connecting a pipe to a nipple. This clamp has an indicating device which during the connection renders it possible to determine when the clamp has been sufficiently tightened in order not to sit too loose nor too tight. This indicating device however, loosens from the clamp when the connection is done, which inter alia has the drawback that it is not possible, after connection, to read whether the clamp has maintained its initially set pressure or tensional force or if it has changed, e.g. so that said pressure or tensional force has become unacceptably low or high. Furthermore, said clamp consists of many different members, which can be a substantial drawback.
The object of the present invention is to provide a clamp with an indicating device which during assembly permits reading or determination of whether the spring means has been brought to the desired pressure or tensional force and, after assembly, whether said desired pressure has been maintained or not.
By utilizing the pressure plate and spring means of the clamp as an indicating device, the momentaneous pressure or tensional force of the spring means may be indicated at any time, including after several years.
REFERENCES:
patent: 2805877 (1957-07-01), Ashley
patent: 2893671 (1959-07-01), Flora et al.
patent: 3041574 (1962-06-01), Cornell, Jr.
patent: 4572552 (1986-02-01), Orevik et al.
patent: 2053828 (1972-03-01), None
patent: 2053828 (1972-05-01), None
patent: 2341618 (1975-03-01), None
patent: 569111 (1943-05-01), None
patent: 9204/44 (1944-10-01), None
patent: 513118 (1955-02-01), None
patent: 92561 (1958-08-01), None
patent: 443434 (1983-03-01), None
patent: 8100745 (1981-03-01), None
Cottingham John R.
Reichard Lynne A.
Tarolli, Sundheim, Covell, Tummino & Szabo
Teracom Components AB
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