Breathing apparatus
First Claim
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1. A breathing apparatus for supplying air to a helmet and/or protective clothing, comprising(a) a baseplate;
- (b) an elongated core body;
(c) means securing said core body to said baseplate;
(d) means defining in said core body a longitudinally throughgoing cavity;
(e) air driving means supported in said cavity;
(f) means defining in said cavity an air inlet and an air outlet for said air driving means;
(g) energy source means connected to said air driving means for operating the same;
(h) means securing said energy source means to said baseplate;
(i) aerating hose means coupled to said air outlet for supplying air to said helmet and/or said protective clothing;
(j) means defining two ports each having an end communicating with said air inlet;
(k) at least two separate air filters connected to the one and the other of said ports for filtering ambient air drawn through said ports by said air driving means;
(l) a mouthpiece;
(m) means defining a flow passage connecting said mouthpiece with one of said ports to provide for emergency respiration with the circumvention of said cavity; and
(n) a check valve disposed in said flow passage to permit air flow through said passage solely in the direction of said mouthpiece.
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Abstract
A breathing apparatus for supplying air to a helmet and/or protective clothing comprises a base plate; a core body secured to the base plate; an air driving device supported by the core body; an air inlet and an air outlet for the air driving device; an energy source secured to the base plate and connected to the air driving device for operating the same; an aerating hose coupled to the air outlet; and an air filter connected to the air inlet for filtering air driven through the air inlet, the air outlet and the aerating hose by the air driving device.
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Citations
18 Claims
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1. A breathing apparatus for supplying air to a helmet and/or protective clothing, comprising
(a) a baseplate; -
(b) an elongated core body; (c) means securing said core body to said baseplate; (d) means defining in said core body a longitudinally throughgoing cavity; (e) air driving means supported in said cavity; (f) means defining in said cavity an air inlet and an air outlet for said air driving means; (g) energy source means connected to said air driving means for operating the same; (h) means securing said energy source means to said baseplate; (i) aerating hose means coupled to said air outlet for supplying air to said helmet and/or said protective clothing; (j) means defining two ports each having an end communicating with said air inlet; (k) at least two separate air filters connected to the one and the other of said ports for filtering ambient air drawn through said ports by said air driving means; (l) a mouthpiece; (m) means defining a flow passage connecting said mouthpiece with one of said ports to provide for emergency respiration with the circumvention of said cavity; and (n) a check valve disposed in said flow passage to permit air flow through said passage solely in the direction of said mouthpiece. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A breathing apparatus for supplying air to a helmet and/or protective clothing, comprising
(a) a baseplate; -
(b) an elongated core body; (c) means securing said core body to said baseplate; (d) means defining in said core body a longitudinally throughgoing cavity; (e) air driving means supported in said cavity; (f) means defining in said cavity an air inlet and an air outlet for said air driving means; (g) energy source means connected to said air driving means for operating the same; (h) means securing said energy source means to said baseplate; (i) aerating hose means coupled to said air outlet for supplying air to said helmet and/or said protective clothing; (j) air filter means connected to said air inlet for filtering air driven through said air inlet, said air outlet and said aerating hose means by said air driving means; (k) a valve disposed in said cavity in the path of the air flow generated by said air driving means;
said valve having(1) a valve seat constituted by a constriction formed in said cavity and (2) a movable valve member cooperating with said constriction and displaceable from a closed position in the direction of said air flow into an open position;
said movable valve member being maintained in its open position by said air flow during normal operation;(l) signalling means connected to said valve; and (m) means actuating said signalling means when said valve assumes its said closed position. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification
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Current AssigneeGesellschaft Fur Kernforschung mbH
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Original AssigneeGesellschaft FUER Kernforschung
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InventorsPedrerol, Johann, Kienhofer, Manfred
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Primary Examiner(s)Recla, Henry J.
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Application NumberUS05/781,468Time in Patent Office613 DaysField of Search128/141 R, 128/142 R, 128/142.2, 128/142.3, 128/142.4, 128/142.5, 128/142.6, 128/142.7, 128/145 R, 128/145.6, 128/147, 128/139, 128/191 R , 128/DIG. 17, 137/557, 116/70 R, 116/112 R, 116/114 PV, 116/117 RUS Class Current128/201.25CPC Class CodesA62B 18/006 with pumps for forced venti...Y10T 137/8326 Fluid pressure responsive i...
