US 12,264,670 B2
Pump closure
Makus Schöning, Dortmund (DE)
Assigned to ISG Innovative Systems GmbH, Dortmund (DE)
Appl. No. 17/756,600
Filed by ISG Innovative Systems GmbH, Dortmund (DE)
PCT Filed Nov. 24, 2020, PCT No. PCT/EP2020/083186
§ 371(c)(1), (2) Date May 27, 2022,
PCT Pub. No. WO2021/105110, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 20 2019 106 655.5 (DE), filed on Nov. 29, 2019.
Prior Publication US 2023/0003217 A1, Jan. 5, 2023
Int. Cl. F04B 53/22 (2006.01); F04B 43/02 (2006.01); F04B 53/16 (2006.01)
CPC F04B 53/22 (2013.01) [F04B 43/02 (2013.01); F04B 53/16 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A diaphragm pump, comprising:
a pump head;
a pump drive; and
a socket formed on the pump head configured to be releasably fixed to a mounting formed on the pump drive via a rotary closure, wherein the rotary closure includes a securing device that includes a pushrod which is received in the mounting and is configured to be biased by a spring via a lever and engages in a positive-locking manner into a bore formed on the socket for locking;
wherein the pushrod is mounted in a first sleeve fastened in a vertical bore in the mounting and a second sleeve is provided in the first sleeve for accommodating the spring.