Patents by Inventor Andre Stojc
Andre Stojc has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11313156Abstract: The manual release mechanism described herein enables a passenger to attempt to manually open the transit door, but delays opening until the vehicle is no longer moving. A motion transfer device (14) moves to an unlocking position of the door lock (10) only when the manual release mechanism is activated to store energy in a mechanical energy storage device (40), and an electromechanical device (26) is de-energized to release the motion transfer device (14).Type: GrantFiled: October 31, 2016Date of Patent: April 26, 2022Assignee: WESTINGHOUSE AIR BRAKE TECHNOLOGIES CORPORATIONInventors: Andre Stojc, Daniel Filion
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Publication number: 20220106815Abstract: A vehicle door lock release mechanism includes a plate assembly coupled with a vehicle, sliding plates that slide in opposite directions, an elastic member coupled with the plate assembly, and electromagnets coupled with the plate assembly. One electromagnet may be energized to prevent movement of a first sliding plate while a second sliding plate may move responsive to a release cable being pulled. The second electromagnet may be energized to magnetically couple with and prevent movement of the second sliding plate once the second sliding plate reaches the second electromagnet. The elastic member may be stretched and store energy from the release cable being pulled while both the first and second electromagnets remain energized. The first electromagnet may be de-energized to permit movement of the first sliding plate and release the energy stored in the elastic member for opening a door of the vehicle.Type: ApplicationFiled: December 16, 2021Publication date: April 7, 2022Inventors: Andre Stojc, Daniel Filion
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Patent number: 11148685Abstract: The manual release mechanism described herein enables a passenger to attempt to manually open the door but delays opening until the vehicle is no longer moving. A motion transfer device moves to an unlocking position of the door lock only when the manual release mechanism is activated to release store energy in a mechanical energy storage device and an electromechanical device is de-energized to release the motion transfer device.Type: GrantFiled: October 31, 2016Date of Patent: October 19, 2021Assignee: Westinghouse Air Brake Technologies CorporationInventors: Andre Stojc, Daniel Filion
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Patent number: 10994752Abstract: A door operator system for moving a door of a vehicle between open and closed positions includes a track defined in a base, the track having a curved portion at an end thereof; a drive bracket configured to suspend the door from the base, the drive bracket being slidably movable along the track between an open position and a closed position adjacent to the curved portion; a drive mechanism configured to cause movement of the drive bracket between the open and closed positions; and a locking system configured to retain the drive bracket in the closed position. When the drive bracket is in the closed position, the curved portion engages a cam follower of the locking system to retain the cam follower in a locked position that is over center with respect to a plane perpendicular to the track and a plane parallel to the track.Type: GrantFiled: April 5, 2017Date of Patent: May 4, 2021Assignee: WESTINGHOUSE AIR BRAKE TECHNOLOGIES CORPORATIONInventors: Andre Stojc, Daniel Filion
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Publication number: 20190176856Abstract: A door operator system for moving a door of a transit vehicle between open and closed positions includes a track defined in a base, the track having a curved portion at an end thereof; a drive bracket configured to suspend the door from the base, the drive bracket being slidably movable along the track between an open position and a closed position adjacent to the curved portion; a drive mechanism configured to cause movement of the drive bracket between the open and closed positions; and a locking system configured to retain the drive bracket in the closed position. When the drive bracket is in the closed position, the curved portion engages a cam follower of the locking system to retain the cam follower in a locked position that is overcenter with respect to a plane perpendicular to the track and a plane parallel to the track.Type: ApplicationFiled: April 5, 2017Publication date: June 13, 2019Inventors: Andre Stojc, Daniel Filion
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Publication number: 20180319410Abstract: The manual release mechanism described herein enables a passenger to attempt to manually open the transit door but delays opening until the vehicle is no longer moving. A motion transfer device (14) moves to an unlocking position of the door lock (10) only when the manual release mechanism is activated to release store energy in a mechanical energy storage device (40) and an electromechanical device (26) is de-energized to release the motion transfer device (14).Type: ApplicationFiled: October 31, 2016Publication date: November 8, 2018Inventors: Andre Stojc, Daniel Filion
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Publication number: 20180283057Abstract: The manual release mechanism described herein enables a passenger to attempt to manually open the transit door, but delays opening until the vehicle is no longer moving. A motion transfer device (14) moves to an unlocking position of the door lock (10) only when the manual release mechanism is activated to store energy in a mechanical energy storage device (40), and an electromechanical device (26) is de-energized to release the motion transfer device (14).Type: ApplicationFiled: October 31, 2016Publication date: October 4, 2018Inventors: Andre Stojc, Daniel Filion
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Patent number: 7228804Abstract: A locking arrangement for a door system of a transit vehicle includes a combination of a lock mechanism and an electromagnetic brake. The lock mechanism enables positive locking of at least one door but does not require substantial contact between moving and stationary lock elements. The lock mechanism is connected with the manual release means for door opening during an emergency. The electromagnetic brake maintains door seal compression in the closed and locked condition which improves sealing capabilities and provides for reliable lock mechanism operation. Such combination provides locking redundancy and meets various requirements regarding annunciation and manual release operation.Type: GrantFiled: April 21, 2004Date of Patent: June 12, 2007Assignee: WABTEC Holding Corp.Inventors: Andre Stojc, Simon Evans
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Patent number: 7004516Abstract: A lock latch mechanism disposed within a powered locking device of a transit vehicle door system for maintaining a lock lever in an unlock position without the aid of the lock actuator. The lock latch mechanism includes a lock latch lever biased for engagement with an unlock cam through the use of a bias spring. The lock latch mechanism further includes a reset lever assembly engaging such lock latch lever during the door closing motion to allow movement of the lock lever form such unlocking position into such locking position to maintain at least one door of the transit vehicle in the fully closed and lock position. A manual release lever is provided to move the lock lever from such locking position into such unlocking position enabling the lock latch mechanism to maintain the lock lever in such unlocked position.Type: GrantFiled: February 11, 2004Date of Patent: February 28, 2006Assignee: Westinghouse Air Brake Technologies CorporationInventor: Andre Stojc
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Publication number: 20050235866Abstract: A locking arrangement for a door system of a transit vehicle includes a combination of a lock mechanism and an electromagnetic brake. The lock mechanism enables positive locking of at least one door but does not require substantial contact between moving and stationary lock elements. The lock mechanism is connected with the manual release means for door opening during an emergency. The electromagnetic brake maintains door seal compression in the closed and locked condition which improves sealing capabilities and provides for reliable lock mechanism operation. Such combination provides locking redundancy and meets various requirements regarding annunciation and manual release operation.Type: ApplicationFiled: April 21, 2004Publication date: October 27, 2005Inventors: Andre Stojc, Simon Evans
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Publication number: 20040160065Abstract: A lock latch mechanism disposed within a powered locking device of a transit vehicle door system for maintaining a lock lever in an unlock position without the aid of the lock actuator. The lock latch mechanism includes a lock latch lever biased for engagement with an unlock cam through the use of a bias spring. The lock latch mechanism further includes a reset lever assembly engaging such lock latch lever during the door closing motion to allow movement of the lock lever form such unlocking position into such locking position to maintain at least one door of the transit vehicle in the fully closed and lock position. A manual release lever is provided to move the lock lever from such locking position into such unlocking position enabling the lock latch mechanism to maintain the lock lever in such unlocked position.Type: ApplicationFiled: February 11, 2004Publication date: August 19, 2004Applicant: WESTINGHOUSE AIR BRAKE TECHNOLOGIES CORPORATIONInventor: Andre Stojc
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Patent number: 6718694Abstract: The present invention teaches a powered door operator for passenger transit vehicles having a drive nut assembly engaging a door hanger bracket substantially connected to a door disposed within an aperture of the vehicle structure. Such drive nut further engaging a drive screw to move a door for covering and uncovering an aperture for ingress and egress of passengers in a wall of a transit vehicle upon rotation of the drive screw enabled by a rotary prime mover. The drive assembly comprises a housing having an internal cavity, at least one drive nut insert having a helix portion substantially identical to the drive screw helix and disposed within said internal cavity, and a retaining clip engaging said at least one drive nut insert for substantial retainment thereof. Retaining clip further provides for simple replacement of such at least one drive nut insert during maintenance cycles thereby substantially eliminating periodic lubrication generally employed with powered door operators of the prior art.Type: GrantFiled: April 23, 2002Date of Patent: April 13, 2004Assignee: Westinghouse Air Brake Technologies CorporationInventors: Andre Stojc, Erich Stephen
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Patent number: 6712406Abstract: A lock latch mechanism disposed within a powered locking device of a transit vehicle door system for maintaining a lock lever in an unlock position without the aid of the lock actuator. The lock latch mechanism includes a lock latch lever biased for engagement with an unlock cam through the use of a bias spring. The lock latch mechanism further includes a reset lever assembly engaging such lock latch lever during the door closing motion to allow movement of the lock lever form such unlocking position into such locking position to maintain at least one door of the transit vehicle in the fully closed and lock position. A manual release lever is provided to move the lock lever from such locking position into such unlocking position enabling the lock latch mechanism to maintain the lock lever in such unlocked position.Type: GrantFiled: August 28, 2002Date of Patent: March 30, 2004Assignee: Westubggiyse Aur Brake Technologies CorporationInventor: Andre Stojc
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Patent number: 6708449Abstract: A tandem of independent powered door operators for passenger transit vehicles having a central lock mechanism and enabling each of the doors to be moved with a force of less than 80 N. Such door operators can be used on vehicles where the cross-sectional area within which to accommodate a door operator is limited. The door operator comprises an electric motor, a helical drive screw rotatably connected to such electric motor with a universal joint, a drive nut assembly engaged with such drive screw, a door hanger rod, a first door hanger bracket connected to a door and engaging the drive nut, a second door hanger bracket connected to a door and engaging a centrally located lock mechanism enabling locking of such door in a fully close position.Type: GrantFiled: April 30, 2002Date of Patent: March 23, 2004Assignee: Westinghouse Air Brake Technologies CorporationInventor: Andre Stojc
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Publication number: 20040041413Abstract: A lock latch mechanism disposed within a powered locking device of a transit vehicle door system for maintaining a lock lever in an unlock position without the aid of the lock actuator. The lock latch mechanism includes a lock latch lever biased for engagement with an unlock cam through the use of a bias spring. The lock latch mechanism further includes a reset lever assembly engaging such lock latch lever during the door closing motion to allow movement of the lock lever form such unlocking position into such locking position to maintain at least one door of the transit vehicle in the fully closed and lock position. A manual release lever is provided to move the lock lever from such locking position into such unlocking position enabling the lock latch mechanism to maintain the lock lever in such unlocked position.Type: ApplicationFiled: August 28, 2002Publication date: March 4, 2004Applicant: WESTINGHOUSE AIR BRAKE TECHNOLOGIES CORPORATIONInventor: Andre Stojc
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Patent number: 6688042Abstract: A lock mechanism enabling locking of a bi-parting set of right hand and left hand door panels respectively suspended from a right hand and left hand door operators, to be driven by the door operators for covering and uncovering an aperture disposed within a passenger transit vehicle. Such lock mechanism disposed intermediate the door operators. The lock mechanism is capable of operating in a pushback and non pushback arrangement providing a fully-locked state, for each of the two bi-parting doors of a passenger transit vehicle. The integrated design allows the central lock mechanism to be installed and/or maintained over a doorway with only minimal adjustments needed to assure that the door lock assemblies operate in unison. As compared to separate door lock assemblies for each door panel as is typical of prior art designs, the central lock mechanism enables the door panels to be closed and locked more reliably and with better sealing against weather and noise.Type: GrantFiled: April 30, 2002Date of Patent: February 10, 2004Assignee: Westinghouse Air Brake Technologies CorporationInventors: Andre Stojc, Philip J. Calamatas
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Publication number: 20020194785Abstract: A tandem of independent powered door operators for passenger transit vehicles having a central lock mechanism and enabling each of the doors to be moved with a force of less than 80 N. Such door operators can be used on vehicles where the cross-sectional area within which to accommodate a door operator is limited. The door operator comprises an electric motor, a helical drive screw rotatably connected to such electric motor with a universal joint, a drive nut assembly engaged with such drive screw, a door hanger rod, a first door hanger bracket connected to a door and engaging the drive nut, a second door hanger bracket connected to a door and engaging a centrally located lock mechanism enabling locking of such door in a fully close position.Type: ApplicationFiled: April 30, 2002Publication date: December 26, 2002Inventor: Andre Stojc
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Publication number: 20020194783Abstract: The present invention teaches a powered door operator for passenger transit vehicles having a drive nut assembly engaging a door hanger bracket substantially connected to a door disposed within an aperture of the vehicle structure. Such drive nut further engaging a drive screw to move a door for covering and uncovering an aperture for ingress and egress of passengers in a wall of a transit vehicle upon rotation of the drive screw enabled by a rotary prime mover. The drive assembly comprises a housing having an internal cavity, at least one drive nut insert having a helix portion substantially identical to the drive screw helix and disposed within said internal cavity, and a retaining clip engaging said at least one drive nut insert for substantial retainment thereof. Retaining clip further provides for simple replacement of such at least one drive nut insert during maintenance cycles thereby substantially eliminating periodic lubrication generally employed with powered door operators of the prior art.Type: ApplicationFiled: April 23, 2002Publication date: December 26, 2002Inventors: Andre Stojc, Erich Stephen
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Publication number: 20020194784Abstract: A lock mechanism enabling locking of a bi-parting set of right hand and left hand door panels respectively suspended from a right hand and left hand door operators, to be driven by the door operators for covering and uncovering an aperture disposed within a passenger transit vehicle. Such lock mechanism disposed intermediate the door operators. The lock mechanism is capable of operating in a pushback and non pushback arrangement providing a fully-locked state, for each of the two bi-parting doors of a passenger transit vehicle. The integrated design allows the central lock mechanism to be installed and/or maintained over a doorway with only minimal adjustments needed to assure that the door lock assemblies operate in unison. As compared to separate door lock assemblies for each door panel as is typical of prior art designs, the central lock mechanism enables the door panels to be closed and locked more reliably and with better sealing against weather and noise.Type: ApplicationFiled: April 30, 2002Publication date: December 26, 2002Inventors: Andre Stojc, Philip J. Calamatas