US 3599635 A
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Description (OCR text may contain errors)
United States Patent I  Inventor William Kenneth Ansite Altadena, Calif. [21 Appl. No. 806,603  Filed Mar. 12, 1969  Patented Aug. 17, 1971  Assignee Sierra Engineering Co.
Sierra Madre, Calif.
 HANGING QUICK DONNING MASKSUSPENSION v 6/1962 Carolan Primary Examiner- Richard A. Gaudct Assistant Examiner-G. F. Dunne Attorney-Beehler & Arant are arcuate in shape to extend well over the ears of the user, even though the user may be wearing earphones, and wherein there is a transverse support or neck piece attached to the rear ends of the lateral support by hinges, the pivot axes of which are disposed at such an angle that the lateral supports can fold toward each other in. a flat package and which when opened will assume positions adapted to readily fit over the head. The suspension is adjustable to size by a crown strap attached to midportions of the lateral supports and a rear strap which extends from the crown strap to a point of attachment with the transverse support. The front ends of the lateral support are pivotally connected to the mask so that when collapsed the mask will assume a tilted position improving the compactness of the package but capable of tilting to a proper operating position when the mask is donned.
operate without a breathing mask because the cabins and cockpits are customarily pressurized to compensate for high altitude flight. There is of course always the prospect of an emergency situation arising wherein it may be necessary for the user to quickly don an oxygen breathing mask. Consequently, each user is provided with a mask designed to fit his head and face and which must be kept handy and within reach so that it can be quickly donned when needed. However necessary it may be to have a mask ready to meet an emergency situation; it cannot be such that when stowed it interferes with the users freedom in the cockpit of an airplane where space is at a premium and which is crowded with equipment. suspensions which are not collapsible in any way take up entirely too much room when-stowed Even mask suspensions which are partially collapsible tend to take up more room than can properly be sacrificed to them, especially where when collapsed they still occupy appreciable space. Though the mask suspension itself may be capable of being compactly collapsed,-when there is a mask attached to the suspension, the mask itself occupies appreciable space and, when it is mounted on the suspension in a position capable of being immediately applied to the face for use, the combination of mask and attached suspension makes an assembly which is particularly diff cult to collapse into one small bundle.
it is therefore among the objects of the invention to provide a new-and improved quick donning mask and. foldablesuspension which when folded or collapsed makes a particularly flat package which is easy to stow' and unobtrusive, and which is so constructed that as, promptly as removed from stowed position, the parts will fall automatically in. a donning relationship sothat the combination can be quickly applied over the user's head with a single hand operation Another object of the invention is to provide a new and improved quick donning mask and foldable suspension assemblywhich is of such construction that when the assembly is unfolded from a flat compact position to a usable condition, it can be easily donned: over the users'head even though the user may be wearing a pair of cumbersome earphones which cannot beremoved. a
-Still another object of theinvention is to. provide a. new. and improved quick donning mask and=foldable suspensionwhich. is constructed of a substantially minimum number of; simple parts readily adjustable to fit each individual'wearert. few. in! number so as to make possible a simple inexpensive and well ordered assembly and which are joined together in such fashion that they will fallopen automatically to: a, quick donning position, thereby minimizing; the time needed for.
withdrawing the device; from acompactly stowed locationzand'i placing it on the user inusable condition.
With these and othcr objects in view, the invention consists in the construction, arrangement, and combinatiomof the various parts of the device, whereby the objects contemplated are attained, ashereinafter set forth, pointed out 'in the appended:
claims and illustrated-in the accompanying drawings. f In the drawing:
FIG. 1 is a side elevational viewof the maskjandgsuspension.
in extended condition on a user's head with the-maskreadyfor use.
F 16. Lisa rear elevational viewshowing the suspension in place.
FlG. 3l-is' asideelevational view showing themask and: foldable suspension removed from the userlshead and folded:
into a stowing con jtion.
FIG. 4 is a plan view of the device in the folded condition ofi FIG. 3.
In ,an embodiment ofthe, invention chosen, for the purpose. of illustration there is shown for illustrative, purposes the head 10 of a userqsupported by his neck 11 wherein ears-l2are visidonning-mask andfoldable suspension would be worn.-
The folda'ble suspension consists of right and left lateral supports1'5 and 16 which are of the same general shape, form and configuration except for the fact that the lateral support 1 is bent to fit the right side of the head and the lateral support 16 is bent to fit the left side of'the head. v
Except for the leftand right-hand configuration g each lateral support has a rear end 17, a front end l8'and awidely hand end 21 being such as tdm'ake the preferred direction of arcuate midportion 19. The midportion 19 arcs widelyso as to clear the ear 12, for example, by an ample extent so that even though the ears may be covered by ,a conventional earphone set, the midportion will have a large enough space intermediate front and rear ends to adequately clear any earphones which might be in place.
A transverse support or neckpiece 20 is of appreciable length and adapted to extend across the upper end or nape of the neck somewhat below the curve of the skull at the rear. The transverse support is relatively rigid so as to substantially hold its form under all circumstances. At the right-hand end 21 there is a hinge 22 attached on one side to the transverse support 20 and on the other side to the rear end 17 of the lateral support. The pivot axis of the hinge 22 extends obliquely rearwardly in its general relationship to the head of the user, the configuration on the relatively flat rear end 17 and its shape with respect to the head 10 together with the shape and configuration of the immediately adjacent portion of therightthe pivot axis possible. The same attachment is provided also onthe left side wherein a left-hand end 23 of the transverse support is attached by means of ahinge 24 to the rear end 17 of the left lateral support.
Extending between midportions of the right and left lateral supports is a transverse crown strap 25 which is provided with an. adjusting buckle 26, the strap extending through respective openings. and 27' in the lateral supports. A rear strap 28 en gages respective openings 29 and 29' in the lateral supports just forward. of the respective hinges 22'and 24-, and an adjustingbuckle 30-is connected to the rear strap 28 The transverse support 20 is of relatively ample dimensions in the interest of comfort and may, if desired, be providedwith folding portions 32 and 33 adapted to be folded upon each other andsecured by snap fasteners 34'.
breathing mask 35 of substantially conventional form is provided witha bracket 36 on which'is a right-handextension 37 and a left-hand extension 38; A pivot pin 39 pivotally mounts .theri'glit side of the bracket 36 to the right-side of the mask. 35 and a similar pivot pin-40' pivotally mounts the left side of'the bracket 36-to the l'efrside of the mask 35. Orrtlie: front end: 18' of. eachlateral support there is a telescoping mechanism 41: of substantially conventional co'n struction'whichenables the mask35 to be pulled yieldably-forwardiaway from the face against spring tension formanipulationandadjustment after which it is pulled automatically back into snugposition, as shown in' FIG. 1. The right-handandleft hand extensions 37 and 38 are secured at their respective outer: ends'to forward-ends ofthe telescoping mechanism in eachzcase. The.telescopingmechanism'in'turn is-iix'ed in position bymeansof'a tab 42:wh'ichis attached'to an enlargement atthe front 'end l8.
lt'is alsosignificantto note, as readily observablein" H6. 2 thatethere is-an outward bow at the location'4'3"in"each' lateral support so that'a' portion immediately adjacent th'e front end 18' standswell :clear of the:face of the user; thereby to further-ease and facilitate bothdonningandivearihgt Thercombination' quick donning mask and foldtib lesuspension when'iiizusehas the parts extended as shown inFlGS"; 1'
and mouth'of theuser; The buckles 26 and 30'can be used'to adjust the st-rapsto. a' satisfactory fit.
When the suspension is removed, the lateral supports fold toward-eachotherin-the direction of the arrowsshown'in' FIGS 3:and 4. The lengthof the transverse sup'port and-the spread of-the extensions37 and 38 "ar'suchthat tlie 'la'ter'al supports do not exactly overlap but move toward each other so' that the midportions are in close proximity. Since the straps 25 and 28 are flexible, theyfold down into a compact position. In this folded relationship, the pivot pins 39 and 40 permit the mask 35 to tilt so that it can be moved into the most compact relationship permitted by its size. The folded lateral supports and transverse supports make a relatively flat package by reason of the angular relationship of the axes of the hinges 22 and 24 being such as to permit a compact folding. In this collapsed relationship the assembly may be stowed in a bag or stowed. on an appropriate shelf.
When the device is to be used, it is removed from the shelf and theusual donning maneuver causes it to assume its intended shape, the lateral supports and 16 will fall outwardly into natural position for donning, limited by the adjusted length of the crown strap 25 and positioned by the proper angular relationship of the hinges'22 and 24 to each other and to theapparatus as a whole. In this automatically sized open position the device can be quickly applied over the head l0'of the user with a single hand operation.
.While the invention has herein been shown and described in I what is conceived to be a practical and effective embodiment,
it is recognized that departures may be made therefrom within the scope of the invention, which is not to be limited to the 'detailsdisclosed herein but is to be accorded the full scope of "the claims so as to embrace any and all equivalent devices.
Having described the invention, what I claim as new in support of Letters Patent Is: l. A quick donning mask and foldable suspension for mounting said mask on the head of user comprising right and left lateral supports having each a substantially arcuate shape wherein an arcuate midportion is adapted to extend above the ears of the user and respective front and rear ends areadapted to extend resp'ectivelyforward and rearward of the ears, said lateral supports being continuous andv substantially rigid throughout the length between front and rear ends, a separate 'rearwardly located substantially rigid transverse support adapted to extend across the upper parts of the users neck,
respective lateral ends of said transverse support having a hinged attachment to respective rear ends of said lateral sup ports; the axis of movement of said'hinged attachment being in the planeof said lateral supports and when worn being substantially parallel to the adjacent surface of the user's head, a transverse crown strap having ends connected to respective lateral supports, lateral extensions on respective right and left sides of said maskand a pivotal connection between an outer end of each said extensions and the font end of the respective lateral support, saidlateral supports when removed from the users head having'folded positions extending* toward each other and overlying said transverse support and the inner end of said mask.
2. A quick donning mask and foldable suspension as in claim 1 including a rear strap extending between rear portions of said lateral supports, a length adjustment between the ends of said transverse crown strap and between the ends of said rear strap.
3. A quick donning mask and foldable suspension as in claim I wherein the front ends of said lateral supports have each an outwardly extending end portion terminating at a location clear of the user's cheeks and attached to the end ofthe respective lateral extension.
4..A quick donning mask and foldable suspension as in claim 3 wherein the pivot connection between the respective lateral support and lateral extension is in fore and aft align- 1 ment with a hinged connection.
5. A quick donning mask and foldable suspension as in claim 4 wherein the axes of said hinged connections are disposed in an angular relationship one with respect to the other.
6 A quick donning mask and foldable suspension as in claim 2 wherein the rear strap and crown strap are flexible bands.
7. A quick donnlng mask and foldable suspension as in claim 1 wherein there is a pivotal connection between the inner ends of said respective lateral extensions and said mask.