US Patent No: 5,747,984

Number of patents in Portfolio can not be more than 2000

Switching component for detecting contact erosion

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Importance

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Abstract

Switching components with contact parts that are mounted on a contact carrier in a switch housing may include devices for monitoring the contact erosion. The contact carrier may be split (sub-divided) and contact parts can be slotted at the rear and mounted on the sub-divided contact carrier. Thus, the oscillation response (vibration response) of the contact carrier in particular can be used as a measure of the erosion of the contact parts.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
SIEMENS AKTIENGESELLSCHAFTMUNICH16762

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Amft, Dietrich Chemnitz, DE 1 5
Branston, David-Walter Effeltrich, DE 7 27
Kieser, Jorg Forchheim, DE 21 443
Maier, Reinhard Herzogenaurach, DE 48 136

Cited Art

Patent Info (Count) # Cites Year
 
AISIN SEIKI KABUSHIKI KAISHA (1)
4,700,082 Circuit breaker 3 1986
 
BELL TELEPHONE LABORATORIES, INCORPORATED (1)
4,225,819 Circuit board contact contamination probe 56 1978
 
EATON CORPORATION (1)
4,479,117 Add-on state indicator for an enclosed D.C. power relay 8 1982

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
SIEMENS AKTIENGESELLSCHAFT (4)
5,844,331 Process for monitoring the wear of at least one contact in a switching device and switching device designed thereof 7 1997
6,225,807 Method of establishing the residual useful life of contacts in switchgear and associated arrangement 4 1998
6,373,669 Process and arrangement for selective network monitoring for switchgear 1 2000
7,408,357 Device for detecting contact wear in switching appliances 0 2004
 
MCGRAW-EDISON COMPANY (1)
6,538,347 Electrical switchgear with synchronous control system and actuator 7 1999