Plastic fan wheel for fume extraction-or - oil burner-fan

    公开(公告)号:DE1957988A1

    公开(公告)日:1971-06-03

    申请号:DE1957988

    申请日:1969-11-18

    Inventor: GRONBACH WILHELM

    Abstract: The wheel is extruded in two parts from a plastic, preferably acetal copolymer or polyamide. Each part has a circular disc as a central flange and blades connected both with the circumferential surfaces and a plane surface of the associated circular disc. One wheel part has the wheel hub, and both parts are centred and joined together by a hole and pin connection. One disc of the central flange has three slits while the other disc has self-locking bayonet closure-like hooks.

    43.
    发明专利
    未知

    公开(公告)号:DE6607470U

    公开(公告)日:1971-03-18

    申请号:DE6607470

    申请日:1966-10-10

    Inventor: WILHELM GRONBACH

    44.
    发明专利
    未知

    公开(公告)号:DE1989271U

    公开(公告)日:1968-07-11

    申请号:DEG0039171

    申请日:1968-03-15

    Inventor: GRONBACH WILHELM

    Hinge with spring for compensating the weight of wings

    公开(公告)号:DE3537924A1

    公开(公告)日:1987-04-30

    申请号:DE3537924

    申请日:1985-10-24

    Inventor: GNANN ALFONS

    Abstract: The invention relates to a hinge with spring for weight compensation, in which the spring at one end is supported in the fixed hinge and at its other end engages on the second hinge part attached to a wing, and in which the spring is designed as a bar spring. For the purpose of a substantial simplification in the mounting of a hinge of the construction described, the spring is supported on a respective eyelet arranged in the hinge part fastened to the wing.

    Spring loaded door hinge - has pivoted lever with cylindrical bore, having grooves to accommodate guiding piston with ratchet to hold door in position

    公开(公告)号:DE2833879A1

    公开(公告)日:1980-02-14

    申请号:DE2833879

    申请日:1978-08-02

    Inventor: GNANN ALFONS

    Abstract: The hinge is provided with weight balancing compression springs and it is used for flaps, lids or doors. The moving part is readily held independently of the turning moment produced by the spring force. Only a slight spring force is necessary for holding the moving part in fully or partly open position. The swivelling hinge has a pivoted lever (11), which has a cylindrical bore with side grooves (14) to accommodate a guiding piston (15). The latter has a cylindrical bore (16) at right angles to its axis. The compression spring (17) is held in this bore. The spring loaded bolts (18, 19) ratchet into the grooves (14). The pivoted lever (11) is held on the swivelling hinge parts. The fixed (1) and the swivelling (3) hinge parts are connected by a guiding lever (12).

    Telescopic spring shock absorber for washing machine - allowing piston to transmit uniform specific pressure and conduct heat away

    公开(公告)号:DE2524592A1

    公开(公告)日:1976-12-23

    申请号:DE2524592

    申请日:1975-06-03

    Inventor: GRONBACH WILHELM

    Abstract: Shock absorber for washing machine comprises a cylinder, a longitudinally displaceable Al piston with a piston rod, and a compression spring supported between the piston and a closure member of the cylinder. The piston acts as a frictional and guide member. In the outer surface of the piston are formed blade-like grooves on which is disposed a friction coating. The piston may be in the form of a longitudinally slotted pipe which is guided on a cup spring in the region of each of its end faces. The friction coating is pref. made from polyester fleece, which has no gas inclusions cf. conventional friction coating made of foamed polyester. The rating of each shock absorber can be adjusted by tightening a nut on the end of the piston rod. This allows individual components to be mfd. with greater tolerances.

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