IP Library Granted Patent US 11,273,438
Granted Patent B2
US 11,273,438 · App. 16/474,522 · Granted Mar 15, 2022

Safety cabinet

Inventors: Keiichi Ono (Tainai, JP); Hirotoshi Sato (Tainai, JP)
Assignee: HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD.
B01L1/50B01L1/00B08B15/02F24F3/163B01L2200/082B01L2300/0681
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Quick Facts
Patent No.
US 11,273,438
App. No.
16/474,522
Granted
Mar 15, 2022
Kind
B2
Abstract

Provided is a safety cabinet that prevents oversights in airtightness tests and HEPA filter penetration ratio tests even if a pathogen or the like leaks from a workspace wall surface in the interior of the safety cabinet. The safety cabinet includes: a work surface at the bottom of a workspace; a front panel at the front of the workspace; a work opening section below the front panel; and a first air purification means that filters exhaust air that is air discharged from within the workspace. The safety cabinet is characterized in that the non-workspace sides of a side wall surface and a back wall surface of the workspace are formed by an outer wall of a device with prescribed airtightness performance.

Claims (9)

1. A safety cabinet comprising:

a work surface on a bottom of a workspace;

a front panel at a front of the workspace;

a work opening section below the front panel;

a first air filter configured to filter exhaust air for exhausting air in the workspace,

an outer wall forming non-workspace sides of a side wall surface and a back wall surface of the workspace;

an opening section below the work surface at the bottom of the workspace;

a penetration ratio test cover which covers the opening section and seals a space in which the first air filter is disposed; and

a test blowing unit connected to the penetration ratio test cover.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 29, 2019
From: ONO, KEIICHI; SATO, HIROTOSHI
To: HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD.
Reel/Frame 049633/0430 →
Priority Claims (1)
JP JP2017-116368 · Jun 14, 2017 · national
Continuity (1)
Related Publication 20200023349A1 · Jan 23, 2020