公开(公告)号：USD895914S1

公开(公告)日：2020-09-08

申请号：US29637279

申请日：2018-02-15

Applicant: The Charles Machine Works, Inc.

Designer： B. Zac Blumer ,  Benjamin S. Burkhart ,  L. Shane Ingram ,  Levi J. Krutzfeldt ,  Jim Lee

公开(公告)号：US20180327999A1

公开(公告)日：2018-11-15

申请号：US15977282

申请日：2018-05-11

Applicant: The Charles Machine Works, Inc.

Inventor： David A. Bural ,  Levi J. Krutzfeldt ,  L. Shane Ingram ,  Vernon T. Stellman

IPC: E02F3/88

CPC classification number: E02F3/8816 ,  B08B9/08

Abstract: A system for controlling pressure to a vacuum tank. The system comprises a conduit disposed between the vacuum tank and a blower. The conduit has a sealable connection disposed along its length between two sections that are geometrically conforming. The connection may be conical and threadless. Tilting the vacuum tank relative to the blower causes the connection to separate, allowing pressure within the vacuum tank to equalize with atmospheric pressure. Filters may be provided on each side of the connection for removing particulates from air excavated from the tank.