Pumps – Ambulant – body supported – or with carrying handle
Reexamination Certificate
2003-04-15
2009-06-09
Freay, Charles G (Department: 3746)
Pumps
Ambulant, body supported, or with carrying handle
C417S002000, C417S313000
Reexamination Certificate
active
07544046
ABSTRACT:
A vacuum pump (10) includes a pump unit (14) and an operating unit (12) arranged spaced from the pump unit (14). The operating unit (12) is connected with the pump unit (14) for controlling it. The pump unit (14) and the operating unit (12) respectively comprise a transceiver module (20,22) for transmitting and receiving control and operational data bidirectionally in a wireless manner. The pump unit (14) and the operating unit (12) are exclusively connected with each other in a wireless manner. By the omission of electrical lines, the induction of interfering signals is excluded. Wall perforations for lead-through of electrical lines are omitted.
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patent: 6211632 (2001-04-01), Liao
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Turinsky “IR-Sende -und IR-Empfangsmodems für Industriesteuerungen” 2421 Radio Fernsehen Electronik 41 (1992) No. 2, Berlin, DD, pp. 127-129.
Beyer Christian
Boy Hermann
Greven Alois
Harig Christian
Hölzer Rainer
Bertheaud Peter J
Fay Sharpe LLP
Freay Charles G
Oerlikon Leybold Vacuum GmbH
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