公开(公告)号：US20250108239A1

公开(公告)日：2025-04-03

申请号：US18832876

申请日：2023-02-01

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Graham Langford

IPC: A62B9/04 ,  A62B7/02 ,  A62B9/00 ,  A62B9/02

Abstract: An SCBA harness including a backframe and a reducer mounted on the lower end of the backframe. A delivery hose that is connected to a mask-mountable regulator, and a high-pressure gauge hose that is connected to a pressure gauge, are respectively connected to a primary air-delivery outlet of the reducer and to a high-pressure gauge air outlet of the reducer. The primary air-delivery outlet defines a first hose-end direction along which a first end of the delivery hose is oriented, and the high-pressure gauge air outlet defines a second hose-end direction along which a first end of the high-pressure gauge hose is oriented. The first and second hose-end directions are each oriented upward, at an included angle of from 20 to 70 degrees relative to a vertical axis of the backframe, and are oriented at an angle of from 40 to 140 degrees relative to each other.

公开(公告)号：USD1023294S1

公开(公告)日：2024-04-16

申请号：US29791820

申请日：2022-02-10

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Designer： William P. Atwood ,  Graham Langford ,  Michael S. Meyer ,  Barry S. Lewin ,  Martin Wilcockson

Abstract: FIG. 1 is a perspective view showing an embodiment of the new design for a backframe for self-contained breathing apparatus;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
The broken line showing forms no part of the claimed design, and the shading is provided to illustrate contour only and is not an indication of texture, gloss, etc.