Patents Assigned to Delta Systems, Inc.
  • Publication number: 20080029378
    Abstract: A switch is disclosed having a switch housing defining a housing interior and an access opening that extends through a wall of the housing to the housing exterior. An actuator assembly including a shaft constrained by said housing moves along a path from a normal position to an actuated position as well as a momentary position. The shaft has an actuating portion which extends outwardly from the housing interior through the access opening. A shaft body inside the housing including a generally planar contact support hat supports a number of switch contacts. A housing base positions a number of terminals having conductive surfaces for biased engagement with selected switch contacts to form an electrical path between terminals when the actuator assembly is in one of either the normal, actuated or momentary positions.
    Type: Application
    Filed: April 4, 2007
    Publication date: February 7, 2008
    Applicant: Delta Systems, Inc.
    Inventors: Christopher A. Kahnert, Muni Polavaram
  • Publication number: 20070251737
    Abstract: A control circuit for a lawn tractor having an engine and a power take off driven implement. The control circuit includes an inhibit circuit component for preventing operation of a power take off driven implement with the tractor in reverse. Two versions of the inhibit circuit are disclosed, one grounds an engine magneto and a second disables an electric clutch for coupling the power take off to the driven element. The circuit includes first and second override switches and an override circuit component that allows operation of a power take off driven implement while the lawn tractor is in reverse after the first and second override switches are activated in a proper order by a tractor operator.
    Type: Application
    Filed: June 15, 2007
    Publication date: November 1, 2007
    Applicant: Delta Systems, Inc.
    Inventors: David Straka, Arthur Harvey, Ted Wetzel
  • Patent number: 7237633
    Abstract: A control circuit for a lawn tractor having an engine and a power take off driven implement. The control circuit includes an inhibit circuit component for preventing operation of a power take off driven implement with the tractor in reverse. Two versions of the inhibit circuit are disclosed, one grounds an engine magneto and a second disables an electric clutch for coupling the power take off to the driven element. The circuit includes first and second override switches and an override circuit component that allows operation of a power take off driven implement while the lawn tractor is in reverse after the first and second override switches are activated in a proper order by a tractor operator.
    Type: Grant
    Filed: March 9, 2005
    Date of Patent: July 3, 2007
    Assignee: Delta Systems, Inc.
    Inventors: David A. Straka, Arthur James Harvey, Ted Wetzel
  • Patent number: 7168519
    Abstract: A switch mounting assembly that adapts a switch to detect a position of a vehicle control, such as the position of a drive control actuator of a lawn and garden tractor or similar vehicle. The switch mounting assembly includes a switch support member and a lever pivotally connected to the switch support member. The switch support member mounts a switch that includes an actuator that is biased to an extended position and a may be selectively depressed to a retracted position. The lever is pivotable between a first position that allows the actuator to be biased to the extended position and a second position that depresses the actuator to the retracted position.
    Type: Grant
    Filed: April 19, 2004
    Date of Patent: January 30, 2007
    Assignee: Delta Systems, Inc.
    Inventors: Arthur James Harvey, Michael Eric Liedtke
  • Patent number: 7154814
    Abstract: A digital engine operating time measuring apparatus for an internal combustion engine. The apparatus is powered by a magneto of the engine and accumulates engine operating time only when the engine is operating. The apparatus includes power regulation circuitry including a pair of terminals coupled to the engine magneto. The power regulation circuitry converts a time varying electrical signal generated by the magneto when the engine is operating to a low voltage DC signal. The apparatus further includes digital circuitry coupled to an output of the power regulation circuitry for calculating accumulated engine operating time. The digital circuitry is powered by the low voltage DC signal of the power regulation circuitry and only accumulates engine operating time upon sensing the low voltage DC signal. The apparatus further includes a display coupled to the digital circuitry for displaying accumulated engine operating time as calculated by the digital circuitry.
    Type: Grant
    Filed: May 10, 2004
    Date of Patent: December 26, 2006
    Assignee: Delta Systems, Inc.
    Inventor: David A. Straka
  • Patent number: 7131509
    Abstract: A safety system for a riding lawn mower that prevents powered operation of a PTO driven implement while in reverse unless an override switch is “ON”. The override switch may be a sustained action two position switch and the PTO driven implement may be a lawn mower blade. In one embodiment, the override switch does not allow the engine to start if the override switch is on. In one embodiment, the override switch cooperates with an operator presence switch to prevent operation of the PTO driven implement when the override switch is on and the operator is not present.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: November 7, 2006
    Assignee: Delta Systems, Inc.
    Inventors: Arthur James Harvey, Theodore G. Wetzel
  • Patent number: 7128177
    Abstract: A safety system for a riding lawn mower that prevents powered operation of a PTO driven implement while in reverse unless an override switch is “ON”. The override switch may be a sustained action two position switch and the PTO driven implement may be a lawn mower blade. In one embodiment, the override switch does not allow the engine to start if the override switch is on. In one embodiment, the override switch cooperates with an operator presence switch to prevent operation of the PTO driven implement when the override switch is on and the operator is not present.
    Type: Grant
    Filed: July 24, 2003
    Date of Patent: October 31, 2006
    Assignee: Delta Systems, Inc.
    Inventors: Arthur James Harvey, Theodore G. Wetzel
  • Patent number: 7064639
    Abstract: A magnetic latching switch. The switch includes a pair of switch terminals, a switch actuator, an electromagnet and a biasing member. The switch actuator is manually moveable from a first position where the switch terminals are in a first state to a second position where the switch terminals are in a second state. The electromagnet selectively applies a magnetic field. Applying the magnetic field with the electromagnet when the switch actuator is in the second position maintains the switch actuator in the second position. The biasing member is coupled to the switch actuator such that the biasing member automatically returns the switch actuator from the second position to the first position when the magnetic field is removed.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: June 20, 2006
    Assignee: Delta Systems, Inc.
    Inventors: Arthur James Harvey, Michael Eric Liedtke, Ted Wetzel
  • Patent number: 7034674
    Abstract: An hour meter having a display that provides a visual indication of a total time an engine has operated and a visual indication of engine operation time remaining in a predetermined service time interval. A plurality of segments on the display are selectively displayed in a first optical state or a second optical state. A display drive displays the segments in the first optical state at a beginning of a predetermined service interval. The drive changes the optical state of a first segment from the first optical state to the second optical state when a given portion of the predetermined service time interval has elapsed. The drive incrementally changes the state of a remainder of the plurality of segments from the first optical state to said second optical state as additional portions of the predetermined service time interval elapse to graphically display the amount of engine operation time remaining in the predetermined service time interval.
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: April 25, 2006
    Assignee: Delta Systems, Inc.
    Inventor: Arthur James Harvey
  • Patent number: 6983580
    Abstract: A device and method for stacking and packaging cylindrical products having variable size. Products are placed on edge and organized to a uniform stack size by means of a product compressing drum. The stack is placed in a trough between a cam operating front lug and a back lug. Once between lugs, the uniformly sized stack maybe packaged into uniform size packages.
    Type: Grant
    Filed: September 6, 2002
    Date of Patent: January 10, 2006
    Assignee: Delta Systems, Inc.
    Inventors: Ken Layton, Jon Chandler, Robert Doug Robinson, Clyde Spinks
  • Patent number: 6868925
    Abstract: An engine with an integral actuator for a vehicle having an implement needing control. The engine includes a crank shaft, and a pump in a housing and an actuator that extends from the housing. The pump is operably connected to the crank shaft to produce a flow of fluid, such as oil, from the pump to the actuator. A valve is operably connected to the pump or the actuator to selectively move the actuator.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: March 22, 2005
    Assignee: Delta Systems, Inc.
    Inventors: Harlin J. Trefz, Ted Wetzel
  • Patent number: 6835090
    Abstract: A sealed electrical assembly that includes a housing having an opening at an end. An electrical device is positioned in the housing. The electrical device includes a lead that extends out of the open end. A cover is positioned within the opening. The cover includes a plate portion and a tab portion spaced apart from the plate portion. The tab portion extends into a cutout in the housing that is located between the plate portion and the housing end to position the cover with respect to the housing. A sealant is disposed around a perimeter of the plate portion to provide a seal between the cover and the housing. A portion of the sealant is disposed in a space between the cutout and the plate portion to prevent leakage through the cutout.
    Type: Grant
    Filed: August 20, 2003
    Date of Patent: December 28, 2004
    Assignee: Delta Systems, Inc.
    Inventor: Michael Eric Liedtke
  • Publication number: 20040201288
    Abstract: A switch mounting assembly that adapts a switch to detect a position of a vehicle control, such as the position of a drive control actuator of a lawn and garden tractor or similar vehicle. The switch mounting assembly includes a switch support member and a lever pivotally connected to the switch support member. The switch support member mounts a switch that includes an actuator that is biased to an extended position and a may be selectively depressed to a retracted position. The lever is pivotable between a first position that allows the actuator to be biased to the extended position and a second position that depresses the actuator to the retracted position.
    Type: Application
    Filed: April 19, 2004
    Publication date: October 14, 2004
    Applicant: Delta Systems, Inc.
    Inventors: Arthur James Harvey, Michael Eric Liedtke
  • Publication number: 20040201286
    Abstract: A safety system for a riding lawn mower that prevents powered operation of a PTO driven implement while in reverse unless an override switch is “ON”. The override switch may be a sustained action two position switch and the PTO driven implement may be a lawn mower blade. In one embodiment, the override switch does not alow the engine to start if the override switch is on. In one embodiment, the override switch cooperates with an operator presence switch to prevent operation of the PTO driven implement when the override switch is on and the operator is not present.
    Type: Application
    Filed: July 24, 2003
    Publication date: October 14, 2004
    Applicant: Delta Systems, Inc.
    Inventors: Arthur James Harvey, Theodore G. Wetzel
  • Publication number: 20040164857
    Abstract: An hour meter having a display that provides a visual indication of a total time an engine has operated and a visual indication of engine operation time remaining in a predetermined service time interval. A plurality of segments on the display are selectively displayed in a first optical state or a second optical state. A display drive displays the segments in the first optical state at a beginning of a predetermined service interval. The drive changes the optical state of a first segment from the first optical state to the second optical state when a given portion of the predetermined service time interval has elapsed. The drive incrementally changes the state of a remainder of the plurality of segments from the first optical state to said second optical state as additional portions of the predetermined service time interval elapse to graphically display the amount of engine operation time remaining in the predetermined service time interval.
    Type: Application
    Filed: February 18, 2004
    Publication date: August 26, 2004
    Applicant: Delta Systems, Inc.
    Inventor: Arthur James Harvey
  • Patent number: 6655975
    Abstract: A sealed electrical assembly that includes a housing having an opening at an end. An electrical device is positioned in the housing. The electrical device includes a lead that extends out of the open end. A cover is positioned within the opening. The cover includes a plate portion and a tab portion spaced apart from the plate portion. The tab portion extends into a cutout in the housing that is located between the plate portion and the housing end to position the cover with respect to the housing. A sealant is disposed around a perimeter of the plate portion to provide a seal between the cover and the housing. A portion of the sealant is disposed in a space between the cutout and the plate portion to prevent leakage through the cutout.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: December 2, 2003
    Assignee: Delta Systems, Inc.
    Inventor: Michael Eric Liedtke
  • Patent number: 6648092
    Abstract: A Hall effect safety switch assembly for de-activating a motor vehicle if a user is not positioned on a vehicle seat. The assembly includes a switch frame for mounting the assembly, a magnet and a hall effect sensor mounted to the switch frame in a spaced apart relationship, and a vane that moves in response to the presence of a vehicle operator on the seat that causes the Hall effect sensor to provide an inhibit signal that prevents an engine from running.
    Type: Grant
    Filed: July 12, 2002
    Date of Patent: November 18, 2003
    Assignee: Delta Systems, Inc.
    Inventors: Jan L. Michaud, Arthur J. Harvey
  • Patent number: 6618022
    Abstract: A self contained radio frequency identification integrated circuit (RFIDIC) switch. The RFIDIC switch includes a switch housing, a radio frequency identification integrated circuit enclosed in the switch housing and an actuator extending into the switch housing. The RFIDIC is powered by a radio frequency carrier signal. The actuator is movable to a first position and to a second position. The radio frequency identification integrated circuit transmits a signal when said actuator is in one of the positions. Movement of the actuator to the other position alters said signal.
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: September 9, 2003
    Assignee: Delta Systems, Inc.
    Inventor: Arthur James Harvey
  • Patent number: D500744
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: January 11, 2005
    Assignee: Delta Systems, Inc.
    Inventor: Jan L. Michaud
  • Patent number: D558155
    Type: Grant
    Filed: August 22, 2005
    Date of Patent: December 25, 2007
    Assignee: Delta Systems, Inc.
    Inventors: Jan L. Michaud, Mark R. Albrecht