Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4636/58A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voigt and Haeffner AG
Original Assignee
Voigt and Haeffner AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voigt and Haeffner AGfiledCriticalVoigt and Haeffner AG
Publication of GB833302ApublicationCriticalpatent/GB833302A/en
H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
H05B3/00—Ohmic-resistance heating
H05B3/02—Details
H05B3/06—Heater elements structurally combined with coupling elements or holders
Landscapes
Resistance Heating
(AREA)
Abstract
833,302. Direct connections between conductors. VOIGT & HAEFFNER A.G. Feb. 12, 1958 [Feb. 13, 1957], No. 4636/58. Class 38 (1). The heating coil 6 of a tubular heater is provided near one or both ends with a group of closely wound turns 5 which are a tight friction fit on the reduced end 4 of the associated connection bolt 1. Opening out of the turns 5 is said to prevent excessive strain on the coil arising from elongation of the heater tube during manufacture. The coil end may be secured to the bolt 1 by winding it in the screw-thread 3 and rolling over the thread. Alternatively, it may be wedged in a longitudinal groove in the bolt or spot welded to it.
GB4636/58A1957-02-131958-02-12Improvements relating to electric tubular heaters
ExpiredGB833302A
(en)