US2260841A - Exhaust pipe deflector - Google Patents

Description

Patented Oct. 28, 1941 EXHAUST PIPE DEFLECTOB Linus E. Russell, Springfield, Ohio, assigner to Peters and Russell, Inc., Springfield, Ohio, a

corporation of Ohio Application August 15, 1939, Serial No. 290,263

(Cl. 13S-25) 4 Claims.

'I'his invention pertains to exhaust pipe shrouds or deiiectors for motor vehicles.

Exhaust pipe extensions or deflectors are primarily utilitarian in character and perform the useful function of diverting products of combustion downwardly and away from the car chassis and rear bumper. They are, however, ordinarily of ornamental character and of fanciful shapes and designs with chromium plating or decorative finish. Such extensions or deectors, which ordinarily project rearwardly beyond the rear bumper of the vehicle, are subject to accidental bending or distortion. Moreover, the attachment of such devices to the exhaust pipe, especially if the exhaust pipe is of less diameter than that for which the deilector was especially designed, subjects the deiiector head to distorting strain, which, while not greatly interfering with its function, does indeed destroy the symmetry and pleasing appearance of such unit. For commercial reasons and economy of manufacture, it is desirable that such deflectors be formed of moderately light gauge sheet metal which will not ordinarily withstand hard usage.

The present exhaust pipe shroud or deiiector, while contoured to enable the rapid dissipation of heated gases and products of combustion in directions away from the vehicle parts without creating back pressure, is so shaped and designed as to afford increased strength and resistance to distortion and to prevent transmission of strains from the attachment portion to the deflector head.

The object of the present invention is to improve the construction and shape of exhaust deiiectors whereby they may not only be economically manufactured and easily installed, but will be eflicient in use, of increased strength and durability and unlikely to get out of shape or repair.

A further object of the invention is to provide an exhaust deflect/or of such configuration that without destroying its ornamental appearance it is greatly strengthened and rendered more resistant to distortion.

A lfurther object of the invention is to provide in such unit interruption of strains and stresses incident to the attachment of the device and thereby prevent incident distortion.

A further object of the invention is to provide a deector having a longitudinal medial inverted spent-products directing channel which directs the discharged gases centrally of the deilector, rendering their lateral and downward escape more gradual, and also duofunctionally affording a relatively broad stiifening rib for the deflector head. to enable it to resist bending strains.

A further object of the invention is to provide a deector wherein the attachment neck and medial portion of the deilector head are in axial alignment, while the gas diverting wing portions of the head are on approximately the axial level of the exhaust pipe and neck portion of the unit.

A further object is to provide an improved baffle for effecting distribution of gases without creating back pressure.

A further object of the invention is to provide an exhaust pipe deflector possessing the herein mentioned desirable structural features and inherent meritorious characteristics.

With the above primary and other incidental objects in view as will more fully appear in the specification, the invention intended to be protected by Letters Patent consists of the features of construction, the parts and combinations thereof and the mode of operation, or their equivalents, as hereinafter described or illustrated in the accompanying drawing.

In the accompanying drawing, wherein is shown the preferred but not necessarily the only form of embodiment'of the invention, Fig. 1 is a. perspective view of an exhaust pipe shroud or deiiector embodying the present invention.

Fig. 2 is a side elevation thereof.

Fig. 3 is a longitudinal sectional view.

Fig. 4 is an end elevation from the neck or Pipe engaging End- Fig. 5 is a bottom plan view.

Like parts are indicated by similar characters of reference throughout the several views.

Referring to the drawing,| is a. portion of an exhaust pipe of a motor vehicle ,upon which is mounted the shroud or deiiector forming the subject matter hereof. This shroud comprises a flaring deiiector head portion 2 of a generally triangular shape with downwardly directed marginal edges and an integral semi-tubular neck portion 3.

The flaring head portion may be variously shaped and contoured for ornamental purposes, but an important structural feature of the present device is the presence of a longitudinal medial ridge or comb 4, which forms interiorly of the deiiector head an inverted channel 5. The semitubular neck portion 3 which surrounds and closely conforms to the exhaust pipe is disposed in axial alignment with the medial comb or ridge 4 of the deflector head. It is of like diameter, so that in effect the neck 2 and elevated convex comb or ridge I are one continuous uninterrupted formation dening a straight top line throughout the neck 3 and to approximately mid-length of the head 2 or therebeyond. Beyond such midlength point of the deilector head, the comb or elevated convex ridge 4 follows a drooping curvilinear line which merges into the straight top line of such comb or ridge 4. Likewise, the drooping curvilinear portion of such comb gradually decreases in depth. 'I'he neck portion 3 is partially separated from the head 2 at each side by vertical slots 6 adjacent to which the terminal marginal edges 'I of the head and contiguous areas thereof are disposed in substantially vertical planes approximately coincident with the sides of the comb or ridge 4 and consequently in aligned relation with the sides of the neck 3.

At each side of the neck portion 3 are dependent perforate flaps 4 to be connected by screw bolts 9 in clamping relation about the exhaust pipe terminal. The provision of the vertical slots 6 at each side of the unit between the neck and head portions interrupts the strains and stress incident to clamping the neck flaps about the exhaust pipe, thereby preventing distortion of the head 2 incident thereto.

Interiorly of the head portion is a baille I of flaring shape, having substantially vertical marginal flanges I I and a substantially semi-circular neck portion l2. Such neck I2 ts within and conforms to the interior of the inverted channel formed by the elevated convex comb 4 within which it is flxedly secured. The elevated convex co'mb or ridge 4 with the baille I0 fitted therein is in substantially axial alignment with the exhaust pipe and neck portion of the unit. This enables the discharged gasesto flow easily and without abrupt change of course from the exhaust pipe through the conforming channels of the comb or ridge 4 and baille I2 until they are well beyond the end of the pipe and have lost some of their force. The lateral wing portions of the deiiector head being substantially coincident with the lower margins of the inverted channel 5 direct the spent gases and products of combustion laterally after they have initially passed some distance through the inverted channel. Such arrangement affordsa more uniform dispersement of the products of combustion without, however, imposing any back pressure resistance upon the gases as occurs when the deector curves or droops immediately beyond the end of the exhaust pipe.

The present characteristic feature of having the neck configuration extend in unbroken continuity along the top of the deiiector head I enhances the appearance of the unit and greatly stifens the structure, increasing its resistance against distortion. It also facilitates better distribution of the discharged products of combustion without creating back pressure. It is to be understood that the exact configuration of the that there is thus provided a device of the character described possessing the particular features of advantage before enumerated as desirable, but which obviously is susceptible of medincation in its form, proportions, detail construction and arrangement of parts without departing from the principle involved or sacrincing any of its advantages.

While in order to comply with the statute the invention has been described in language more or less specific as to structural features, it is to be understood that the invention is not limited to the specific features shown, but that the means and construction herein disclosed comprise thepreferred form of several modes of putting the invention into effect, and the invention is therefore claimed in any of its forms or modincations within the legitimate and valid scope of the appended claims.

Having thus described my invention, I claim:

1. An exhaust pipe shroud comprising a head portion the rear terminal of which is closed and open on its bottom, a neck portion in integral axially aligned relation therewith for engagement about the terminal portion of an automobile exhaust pipe, slots of uniform width in the vertical margins of the shroud separating the head and neck portions thereof, and a baille closed at its rear terminal and open on its bottom secured to the interior of the head portion and extending rearwardly in relative spaced relation to the adjacent margins thereof.

2. An exhaust pipe shroud comprising a head portion, a neck portion in integral axially aligned relation therewith for engagement about the terminal portion of an automobile exhaust pipe, slots of uniform width in the vertical margins of the shroud separating the head and neck portions thereof, anda baille secured to the interior of the head portion and extending rearwardly in relative spaced relation to the adjacent margins thereof, the head and interior baille being closed at their rear terminals and open on" their bottom sides in a common plane parallel to the axis of the automobile exhaust pipe.

3. An exhaust pipe shroud including head and neck portions positioned in a common plane axially aligned with an automobile exhaust pipe to which the neck portion is attached, the side walls of said head and neck portions being separated by vertical slots, and a secondary head portion located within the principal head portion in spaced relation thereto, said head portions having a downwardly directed discharge opening in a plane parallel with the common axis of the head and neck portions.

4. An exhaust pipe shroud including a double walled head portion and a clamp, vertical slots of uniform width in the side wall intermediate the headed portion and the clamp, the construction and arrangement being such that the head and clamp are axially aligned with an automobile exhaust pipe to which the clamp is attached, the vertical slots relieving any torsional stress on the head portion incident to attachment of the clamp to the automobile exhaust pipe, and the discharge opening of the double walled head portion being in a plane parallel to the common axis of the head portion, clamp. and automobile exhaust pipe.

LINUS E. RUSSELL.

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