公开(公告)号：US4062356A

公开(公告)日：1977-12-13

申请号：US529410

申请日：1974-12-04

Applicant: Daniel B. Merrifield

Inventor： Daniel B. Merrifield

IPC: A62B7/04 ,  A62B9/04 ,  B63C11/22

CPC classification number: B63C11/2209 ,  A62B7/04 ,  A62B9/04 ,  B63C2011/027 ,  Y10S137/908 ,  Y10S224/934 ,  Y10T137/474 ,  Y10T137/4857 ,  Y10T137/7826

Abstract: The disclosure of this specification illustrates and teaches the use of a self contained breathing apparatus for attachment to a user's back and incorporates a plurality of tanks having a manifold between them that is common to all with a single filling block leading thereto, and a reserve system mounted at one end thereof. The reserve system comprises a poppet valve which signals a loss in pressure by closing, after which it can then be actuated to open it for supplying the remaining portion of the reserve breathing gas through the manifold.The system also has a first and second stage regulator to provide regulated breathing gas to a user. The first stage regulator incorporates a dynamically balanced piston which is supported by an O-ring that is deformed through its cross section to provide movement to the valving piston.The entire system is encapsulated within a package or casing which can be opened along a parting line thereof and which is secured by over-center latches. The casing has a number of straps and support members attached thereto forming a harness that a user places around his torso.

Abstract translation: 本说明书的公开内容说明并且教导了使用自给式呼吸器来附接到使用者的背部，并且包括多个在它们之间具有歧管的容器，所述歧管与通向其的单个填充块是共同的，以及储备系统 安装在其一端。 储备系统包括提升阀，其通过关闭来指示压力损失，然后可以将其打开以打开它，以通过歧管供应剩余的备用呼吸气体。

公开(公告)号：US4005508A

公开(公告)日：1977-02-01

申请号：US616128

申请日：1975-09-24

Applicant: Daniel B. Merrifield

Inventor： Daniel B. Merrifield

IPC: A44B11/06 ,  A44B11/12

CPC classification number: A44B11/06 ,  Y10T24/4077 ,  Y10T24/4084

Abstract: An easily released belt fastener can be constructed utilizing an elongated body having an opening extending through the body intermediate the ends of the body. A clamping bar is movably mounted on the body so as to extend across the opening adjacent to and parallel to a clamping surface. This clamping bar is mounted in such a manner that it is capable of being moved between a clamping position in which it is spaced from the clamping surface and a non-clamping position in which it is also parallel to the clamping surface but is located further from the clamping surface than in the clamping position. The body is formed so that an end of it may be secured in an operative position in which it can be rotated about an axis which is substantially parallel with the clamping surface. A belt may be inserted through the opening around the clamping bar and between this bar and the clamping surface then back underneath the body along itself. When tension is applied to this belt the clamping bar will be moved to the clamping position. When the body is rotated so as to space the belt from the bottom of the body the belt will be located at an angle such that the tension on the belt will move the clamping bar toward the non-clamping position, releasing the belt so that it can be pulled out of engagement with the body.

Abstract translation: 可以利用细长的主体构造容易释放的带紧固件，所述细长主体具有在身体的端部之间延伸穿过主体的开口。 夹紧杆可移动地安装在主体上，以便延伸穿过邻近并平行于夹紧表面的开口。 该夹紧杆以这样的方式安装，使得其能够在夹紧位置与夹紧表面间隔开的夹紧位置和非夹紧位置之间移动，在该夹紧位置中，该夹紧杆还平行于夹紧表面，但是位于 夹紧表面比夹紧位置。 主体被形成为使得其的端部可以固定在可以围绕基本上平行于夹紧表面的轴线旋转的操作位置。 带可以穿过夹持杆周围的开口并且在该杆和夹紧表面之间插入，然后沿着本身沿身体返回到身体的下方。 当张力施加到该皮带上时，夹紧杆将移动到夹紧位置。 当主体旋转以将皮带从身体的底部放置时，皮带将以一定角度定位，使得皮带上的张力将使夹持杆朝向非夹紧位置移动，释放皮带，使得皮带 可以脱离与身体的接触。

公开(公告)号：US4237917A

公开(公告)日：1980-12-09

申请号：US847725

申请日：1977-11-02

Applicant: Daniel B. Merrifield

Inventor： Daniel B. Merrifield

IPC: A62B9/02 ,  B63C11/22 ,  G05D16/10

CPC classification number: A62B9/02 ,  B63C11/2209 ,  B63C11/2245 ,  B63C2011/027 ,  Y10T137/2607 ,  Y10T137/7896 ,  Y10T137/87917

Abstract: The disclosure of this specification illustrates and teaches the use of a self contained breathing apparatus for attachment to a user's back and incorporates a plurality of tanks having a manifold between them that is common to all with a single filling block leading thereto, and a reserve system mounted at one end thereof. The reserve system comprises a poppet valve which signals a loss in pressure by closing, after which it can then be actuated to open it for supplying the remaining portion of the reserve breathing gas through the manifold.The system also has a first and second stage regulator to provide regulated breathing gas to a user. The first stage regulator incorporates a dynamically balanced piston which is supported by an O Ring or torroidal member that is deformed through its cross section to provide movement to the valving piston. The O Ring is eliptical through its cross section. First stage regulation is caused by the deformation of the eliptical cross sectioned O Ring, rather than substantial sliding thereof. At the same time the O Ring is implaced in juxtaposition to a ledge and formed so that upon overpressurization of the intermediate pressure zone such as through valve failure, the O Ring can provide pressure relief to the intermediate pressure system. This avoids inadvertent strains and failures of the downstream system, such as the conduits, hoses, and second stage regulator connected thereto.The entire system is encapsulated within a package or casing which can be opened along a parting line thereof and which is secured by over-center latches. The casing has a number of straps and support members attached thereto forming a harness that a user places around his torso.

Abstract translation: 本说明书的公开内容说明并且教导了使用自给式呼吸器来附接到使用者的背部，并且包括多个在它们之间具有歧管的容器，所述歧管与通向其的单个填充块是共同的，以及储备系统 安装在其一端。 储备系统包括提升阀，其通过关闭来指示压力损失，然后可以将其打开以打开它，以通过歧管供应剩余的备用呼吸气体。 该系统还具有第一和第二级调节器，以向用户提供调节的呼吸气体。 第一级调节器包括一个动态平衡的活塞，该活塞由O型圈或者环形构件支撑，O型圈或者环形构件通过其横截面变形，以向阀门活塞提供运动。 O型圈通过其横截面是椭圆形的。 第一阶段调节是由椭圆截面O形环的变形引起的，而不是实质上的滑动。 同时，O型圈并入到凸缘并形成，使得在诸如通过阀故障的中间压力区域的过压之后，O型圈可以为中压系统提供压力释放。 这避免了下游系统（例如连接到其上的导管，软管和第二级调节器）的无意的应变和故障。 整个系统被封装在可以沿其分型线打开的包装或外壳中，并且其通过过中心的闩锁固定。 壳体具有附接到其上的多个带和支撑构件，形成使用者围绕其躯干放置的线束。