Assignee: AP Parts Manufacturing Company

Location: Toledo, OH
No. of patents: 26

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Number	Title	Issue Date
5907904	Method of manufacturing an exhaust muffler with stamp formed internal components A muffler includes a pair of internal plates that are formed to define an array of channels and at least one chamber. The internal plates are connected in face-to-face relationship such that the channels define tubes that communicate with the chamber. At ...	06/01/1999
5859394	Muffler with stamped internal plates defining tubes and separating chambers An exhaust muffler includes upper and lower internal plates and upper and lower external shells. The internal plates are formed to define a chamber therebetween. The external shells are formed to define chambers on opposite respective sides of the interco...	01/12/1999
5816361	Exhaust mufflers with stamp formed internal components and method of manufacture A muffler includes a pair of internal plates that are formed to define an array of channels and at least one chamber. The internal plates are connected in face-to-face relationship such that the channels define tubes that communicate with the chamber. At ...	10/06/1998
5726398	Automotive bumper and muffler combination A bumper/muffler assembly is provided to simultaneously perform noise attenuation functions and impact protection for an automotive vehicle. The bumper/muffler assembly is formed at least in part from stamped sheets of metal. The sheets include an interna...	03/10/1998
5717173	Exhaust mufflers with stamp formed internal components and method of manufacture A muffler includes a pair of internal plates that are formed to define an array of channels and at least one chamber. The internal plates are connected in face-to-face relationship such that the channels define tubes that communicate with the chamber. At ...	02/10/1998
5597986	Stamp formed muffler with nested chambers A stamp formed muffler includes a first plate, a second plate and at least one sheet. A second plate and the sheet are secured in face-to-face relationship with the first plate and define a plurality of tubes and an internal chamber. External shells are s...	01/28/1997
5563385	Stamp formed muffler with siphon tube A muffler is formed substantially from stamped components to include an array of flow tubes and a plurality of chambers communicating with selected flow tubes. The chambers are provided with siphon tube mounting grooves that extend between a plurality of ...	10/08/1996
5491883	Method of manufacturing a non-linear composite tube A composite tube and method of manufacture are provided. The composite tube is formed from a plurality of tube segments which are different from one another. The tube segments may differ in cross-sectional dimensions and/or material of manufacture. The tu...	02/20/1996
5473891	Three-piece stamp formed connector for achieving equal length exhaust pipes A connector is provided for joining two upstream exhaust pipes with a downstream exhaust pipe and for substantially offsetting any difference in length that may exist in the upstream exhaust pipes. The connector includes first and second external shells t...	12/12/1995
5448831	Method of manufacturing a stamp formed muffler with hermetically sealed laminated outer shell A method of manufacturing a muffler including a pair of stamp formed laminated external shells, each of which includes inner and outer layers. The inner and outer layers are stamped simultaneously to nest with one another. However, the respective layers o...	09/12/1995
5428194	Narrow width stamp formed muffler An exhaust muffler includes first and second internal plates formed to define channels and chambers. The plates are secured in face-to-face relationship, such that the channels define tubes. The tubes include an inlet tube, a return tube and an outlet tub...	06/27/1995
5390494	Pipe assembly for efficient light-off of catalytic converter An exhaust pipe assembly is provided for achieving a quick light-off of a catalytic converter. Exhaust pipe assembly comprises circuitously bent inner and outer pipes disposed in generally concentric relationship to one another. The inner pipe is formed f...	02/21/1995
5004069	Stamp formed muffler with transverse baffle tube A muffler is provided with a pair of plates formed to define an array of tubes therebetween. At least one external shell is secured to at least one of the plates to surround selected portions of the tubes. The shell is formed to define a plurality of cham...	04/02/1991
4959984	Precision bending apparatus A tube bending apparatus is provided for placing a plurality of bends in an elongated tube. The apparatus includes a position sensor for sensing at least one location on the tube for assessing the accuracy of the bends placed therein. The apparatus furthe...	10/02/1990
4958701	Stamp formed muffler with pocket-free baffle crease A stamp formed muffler includes upper and lower internal plates and upper and lower external shells secured to the respective internal plates. The internal plates are formed to include arrays of channels that are placed in register with one another to def...	09/25/1990
4928372	Process for manufacturing stamp formed mufflers Apparatus and process are provided for assembling an exhaust system which includes a stamp formed muffler and pipes connected thereto. The muffler is assembled on an indexable fixturing apparatus having a plurality of stations for receiving the formed com...	05/29/1990
4924968	Stamp formed muffler with reinforced outer shell A muffler is provided comprising an array of tubes and a stamp formed external shell surrounding the tubes. The external shell is stamp formed to define at least one chamber surrounding at least portions of the tubes. The chamber extends away from periphe...	05/15/1990
4909348	Stamp formed exhaust muffler with conformal outer shell A stamp formed exhaust muffler for mounting on a vehicle is provided. The muffler comprises a plurality of plates secured in juxtaposed relationship and stamp formed to define an array of tubes therebetween. At least one external shell is secured to the i...	03/20/1990
4905791	Light weight hybrid exhaust muffler and method of manufacture A light weight exhaust muffler is provided comprising a pair of formed external shells and a pair of pipes disposed therein. The external shells are formed to include peripheral portions and chambers extending from the peripheral portions. The chambers ar...	03/06/1990
4901816	Light weight hybrid exhaust muffler A light weight exhaust muffler is provided comprising a pair of formed external shells and a pair of pipes disposed therein. The external shells are formed to include peripheral portions and chambers extending from the peripheral portions. The chambers ar...	02/20/1990
4894987	Stamp formed muffler and catalytic converter assembly A combined catalytic converter and muffler is provided. A catalyst is securely mounted in a canister which in turn is mounted intermediate a pair of formed internal plates. The plates are further formed to define an array of tubes therebetween. The tubes ...	01/23/1990
4860853	Stamp formed muffler with nonplanar array of tubes A stamp formed muffler is provided with a nonplanar array of tubes. The tubes are defined by at least one pair of nested formed members. The nested members include at least one external shell having a nonplanar portion and at least one internal plate havi...	08/29/1989
4847965	Method of manufacturing stamp formed mufflers Stamped formed mufflers and a process for forming stamped formed mufflers is provided. The mufflers are stamp formed from master dies having a plurality of die subsets removably mounted therein. At least one subset may include several die inserts removabl...	07/18/1989
4835851	Clamp apparatus for tubular members A clamp is provided for securely aligning opposed longitudinal halves of a pipe. The clamp comprises a support having a recess therein for receiving a portion of the pipe. First and second levers are pivotably mounted to the supports on generally opposite...	06/06/1989
4831231	End effector for robotic cutting device An end effector for a robotic device is provided. The end effector is operative to follow the shape of a workpiece, despite variations of the workpiece from a specified configuration. The end effector comprises a connecting arm which is pivotally mounted ...	05/16/1989
4821840	Stamp formed exhaust muffler with conformal outer shell A stamp formed exhaust muffler for mounting on a vehicle is provided. The muffler comprises a plurality of plates secured in juxtaposed relationship and stamp formed to define an array of tubes therebetween. At least one external shell is secured to the i...	04/18/1989

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Assignee: AP Parts Manufacturing Company