A connector comprises a male head housing (1) and a female head housing (2).

The pump head housing has a projection (112a) which locates the closure member on the pump head housing (110).

The yarn-cleaner measuring head (1) comprises a measuring-head housing (11) and an electronic circuit (21) accommodated in the measuring-head housing (11).

A wellhead connection to casing is formed from an upper head housing, a slip bowl housing and slip segments.

An NDIR gas sensor is housed within a mechanical housing made up of a can and a header housing.

Thus, heat generated inside the probe head case can be directly transferred to the outer surface of the probe head case.

The coupler head has preferably at least one notch ( 11, 11') for a predetermined folding of the coupler head housing.

The shaver head housing (5) carries at least two shaver system (15, 16).

The oscillating power tool comprises a head housing (12) and an output shaft (11) extending out of the head housing, and the output shaft can rotate about the output shaft's own axis and reciprocally oscillate.

There is an O-shaped damping ring between the bearing (6) and the head housing (4).

The invention relates to an electric dry shaver comprising a housing (1) and a shaver head housing (5) connected thereto as to oscillate between two end positions.

An annular screw (13) is threadly connected to the outer step of the head housing (4).

The well drilling head housing has a sidewall structure defining a central bore.

In the event of a change in temperature, the optical fibres expand in the probe head housing.

A main shaft (24) penetrates through the case body (21), main valve (22), and a valve seat (23) and is screwed to the head case (11).