Maremont Corporation

Other

Paul Smeltzer

Robert J Paterick

A J Preslicka

Sellers B McNally

Kris Sharma

John Rotharmel

Shapoor B Guzder

Mahesh N Shah

Raymond J Ory

David A Daneck

A vehicular exhaust system muffler fabrication method including using mechanical lock joints for joining the end tubes to the flow tubes. Each end tube has one end whose outer diameter is selected such that the one end may be loosely, telescopically, and overlappingly fitted within the adjacent end of the adjacent flow tube. Each of the overlapped ends of the end tubes and the flow tubes are mechanically locked together by a circumferential skewed bead which is formed in the overlapped ends, with the plane of the skewed bead being at an angle less than 90.degree. with respect to the central longitudinal axis of the overlapped ends. The muffler fabrication method also includes the use of other mechanical lock joints to lock the end tubes within apertures in the end panels of the muffler. Each of these other lock joints includes a continuous, circumferential bead formed in the end tube and in the annular flange, which is integral with the end panel and which extends along the end tube. A series of spaced apart, circumferential, aligned elongated deformations are formed in the overlapped portion of the end tube and the flange.

Improved method for fabricating a muffler

A vehicular exhaust system muffler including a mechanical lock joint for joining the end tubes to the flow tubes. One end of each end tube has an outer diameter selected such that the one end may be loosely, telescopically and overlappingly fitted within the adjacent end of the adjacent flow tube. The overlapped ends of the end tubes and the flow tubes are mechanically locked together by a circumferential skewed bead formed in the overlapped ends, where the plane of the skewed bead is at an angle less than ninety degrees with respect to the central longitudinal axis of the overlapped ends. This mechanical locking maintains the relative axial positions of the overlapped ends and resists relative movement between the overlapped ends and between the internal panels and the wrapper due to the application of torsional and axial forces that the tubes experience during the assembly of the muffler. The muffler also employs a mechanical lock joint to lock the end tubes within apertures in the end panels of the muffler. The lock joint includes a continuous, circumferential bead formed in the end tube and an annular flange, integral with the end panel, which extends along the end tube and abuts the bead. A series spaced apart, circumferential, aligned elongated deformations are formed in the overlapped portion of the end tube and the flange.

Vehicular muffler with improved mechanical lock joints

A variable damping shock absorber is disclosed. The variable damping mechanism is activated by depression of a pin on the upper end of a shock absorber piston. Depression of the pin causes a spring loaded ratchet drive to engage a ratchet on a slide valve to alternatively ratchet the valve and slide the valve between an open and blocking position between two or more transverse flowways in the lower end of the shock.

Dampener valving control mechanism

A utility tray having multiple compartments for retention of items such as nails, screws, washers and other small parts; and a pivoted lid to cover a single array of compartments, an upper mounting plate attached to the floor of the tray and a lower mounting plate facilitates mounting and demounting the tray and upper mounting plate to and from the uppermost platform of a foldable step ladder. The tray has bores that accept swiveling typecastor wheels that convert the tray into a wheeled, low profile tool and small parts retainer convenient for use in making under vehicle repairs or for use by tradesmen in home construction and remodeling.

Tray and tool holder adaptable to stepladders

An adjustable gas spring shock absorber, a control device therefore, and a control device for a fluid mechanism. The control device employs adsorption to regulate the shock absorber or fluid mechanism.

Adjustable gas spring shock absorber and control device

A shock absorber of the direct acting type for vehicles in which improved riding characteristics are obtained by providing an additional back check valve mechanism and anti-dump valve mechanism. Both valve mechanisms are normally biased in a closed position, are opened in response to an initial pressure increase and move into a second closed position when pressure conditions reach a predetermined value above the lower initial pressure increase level. The back check valve mechanism can be made responsive either to the pressure in the compression space or the rebound space. The anti-dump valve mechanism is carried by the piston and controls initial and low pressure flow between the compression space and rebound space.

Shock absorber with improved back check and anti-dump valve mechanisms

A self-leveling combined shock absorber and liquid spring assist unit comprising a pair of tubular structures of the piston and cylinder shock absorber type, one of which defines a load bearing spring chamber and the other of which includes an elongated displacement member for the spring chamber, the displacement member being tubular and cooperating with a pump rod to provide a pump-up function for the unit. An improved pump check valve arrangement between the end surface of the displacement member and the exterior annular surface of the pump rod is provided for controlling the flow of hydraulic fluid between the pump chamber and the load bearing spring chamber which comprises an annular body of elastomeric material having an annular anti-extrusion washer of rigid material embedded therein which is spring urged into sealing engagement by a coil spring and held in assembled relation by a rigid tubular element fixed to the exterior periphery of the displacement member.

Growing community of inventors

Naperville, IL, United States of America

Paul Smeltzer