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Pneumatic Shoe Lacing Apparatus
This invention provides a pneumatic shoe lacing apparatus for the pneumatic lacing of shoe.
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| Number | Title | Issue Date |
| 7008217 | Safety device for boiler comprising a time delay protected by an electronic circuit A safety device for an industrial boiler (CHA) including electromechanical relays (REn, RS), which are connected in series in order to form an electromechanical safety chain (CH1), and at least one shunt relay (RTn) which is normally ope... | 03/07/2006 |
| 6527541 | Regulating device for an air ratio-regulated burner During start-up a regulating device monitors the quality of the air ratio control in respect of time in accordance with the invention in that it observes the difference of a signal and comparison signal.... | 03/04/2003 |
| 5596515 | Microprocessor control circuit with inverted reset and extendable runtime A microprocessor-based burner control apparatus for use in preventing incorrect ignition signals. An inverting circuit inverts and limits the magnitude of a periodic input supply voltage to create an activating signal. This activating signal is applied to... | 01/21/1997 |
| 5439374 | Multi-level flame curent sensing circuit A circuit for producing signals representative of at least two flame current levels is disclosed herein. The circuit includes two electrodes locatable in a flame, where a voltage potential is set up between the electrodes, and the current flow is measured... | 08/08/1995 |
| 5408573 | Integrated motor controller A motor controller for a recreational vehicle (RV) heating system is disclosed. The motor controller regulates the amount of current supplied to an electrical motor in a blower of the heating system in response to the operating voltage and a signal from a... | 04/18/1995 |
| 5051936 | Microprocessor-based controller with synchronous reset A microprocessor-based controller with synchronous reset including a processor for processing information having an input receiving an input signal and an output providing an output signal. The input signal conveys information about the process and the ou... | 09/24/1991 |
| 4931975 | Microprocessor-based controller with synchronous reset A microprocessor-based controller with synchronous reset operates in synchrony with a recurring signal coupled to its reset terminal and executes a predetermined linear program during each acive portion of the recurring signal. The controller remains in a... | 06/05/1990 |
| 4872828 | Integrated furnace control and control self test An integrated electronic control arrangement is disclosed in the illustrative environment of a gas-fired furnace. The control incororates a self-test feature which shuts down the furnace and displays a diagnostic fault code in the event of any one of a nu... | 10/10/1989 |
| 4828484 | Gas valve relay redundant safety A fail safe redundancy circuit for controlling a gas valve relay in a gas fired furnace or similar burner is disclosed. The status of the relay contacts is monitored and if those contacts are in the position for enabling the gas valve prior to an ignition... | 05/09/1989 |
| 4641043 | Printed wiring board means with isolated voltage source means An ignition control device that utilizes a very sensitive flame rectification signal responsive circuit is disclosed. A printed wiring board arrangement is utilized with a careful arrangement of the conductive areas on the printed wiring board to substant... | 02/03/1987 |
| 4581697 | Controller for combustible fuel burner A microprocessor-based burner control apparatus includes an input stage adapted for controllably generating an input signal which is repetitively transitional between a first logic state and a second logic state. A synchronously controlled output stage in... | 04/08/1986 |
| 4516930 | Apparatus and method for controlling a main fuel valve in a standing pilot burner system A control apparatus for repetitively verifying the integrity of a main fuel valve control circuit in a standing pilot burner system includes a probe circuit adapted to receive an electrical signal representative of the presence of a standing pilot flame a... | 05/14/1985 |
| 4482312 | Burner control system A burner control apparatus for use with a furnace installation that has an operating control to produce a request for burner operation, a flame sensor to produce a signal when flame is present in the monitored combustion chamber, one or more devices for c... | 11/13/1984 |
| 4451226 | Flame safeguard sequencer having safe start check A purge time hold circuit is provided in a flame safeguard sequencer to in turn provide a safe start check of a burner control system. If a flame is indicated during a prepurge period, the purge time hold means will reset to a zero status and the timer wi... | 05/29/1984 |
| 4403942 | Self-checking safety switch control circuit The present invention relates to a self-checking safety switch control circuit for a power combustion system. The circuit comprises a safety switch, a combustion blower relay, a thermal pilot switch, and a fuel supply system. The safety switch operates to... | 09/13/1983 |
| 4384844 | Load drive control element check circuit The present disclosure relates to a load drive control element check circuit for checking whether or not conduction and non-conduction troubles take place in a load controlling switching element at the final output stage of a control device, which is requ... | 05/24/1983 |
| 4384845 | Fail safe digital fuel ignition system A fuel burner control system that is fail safe and which controls three fuel burner functions is provided for. The system utilizes two different digital clock means that are separated in time from one another to ensure separate gating of the fuel burner o... | 05/24/1983 |
| 4382770 | Safe start fuel burner control system An intermittent gas pilot system utilizing a flame signal simulating circuit means provides for both dynamic as well as static safe start checking for the system. A simulated flame signal is provided so that the relays contained within the system must be ... | 05/10/1983 |
| 4239478 | Check circuit for combustion process control timer A check circuit for checking operation of timers of a digital type combustion process control apparatus comprises flip-flops each having a preset terminal. The preset state of the flip-flops is inverted by an operation starting signal. The inversion is de... | 12/16/1980 |
| 4230444 | Method and apparatus for fuel ignition system including complete cycling of flame relay prior to trial for ignition When a call for heat is established, a flame relay is actuated for a predetermined time by means of a cycling timer. Upon this initial actuation, the flame relay inhibits a checking relay and initializes a trial-for-ignition (or simply "ignition") timer. ... | 10/28/1980 |
| 4226581 | Safe start check circuit A safe start check circuit for a fuel burner is disclosed. Two relays are arranged to insure proper start and to protect against component failure. Delays in operating the relays, and a normally closed control relay contact serve to both prevent relay rac... | 10/07/1980 |
| 4116613 | Direct ignition system with interlock protection A control circuit for a fuel ignition system of the direct ignition type for providing an interlock on start-up to prevent the energization of a fuel supply valve of the system under certain failure conditions includes an interlock relay which is energize... | 09/26/1978 |
| 4111639 | Proven pilot fuel ignition system with sampling flame sensor A self-checking fuel ignition system of the pilot ignition type including a sampling flame sensor which effects periodic testing of the operability of a spark generating circuit to provide ignition sparks, and an energizing circuit which operates independ... | 09/05/1978 |
| 4101258 | Fuel burner sequencing device with safety checking means A fuel burner sequencing means is disclosed which utilizes a bistable or alternate action switching means for safety checking. The bistable switching means is specifically disclosed as a bistable relay that operates at the start of the cycle, and at the e... | 07/18/1978 |
| 4078879 | Fuel ignition system control arrangement providing total fuel shutoff and contact protection A control arrangement for a fuel ignition system to provide an interlock on start-up to prevent energization of fuel valves under certain failure conditions includes a pulse generating circuit operable when enabled to provide pulses for enabling a first s... | 03/14/1978 |
