Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7837597 | Exercise machine including weight measurement system An exercise machine including a weight measurement system which provides a signal representative of a user's weight. An embodiment of the weight measurement system includes at least one load cell outputting a signal used by a microprocessor to determine an accurate ... | 11/23/2010 |
| 7736281 | Recumbent bicycle An exercise machine has a number of features relating to ease of use. The machine has a widened step through design, improved foot straps, an adjustable reading display or a pivotal arm rest. ... | 06/15/2010 |
| 7670266 | Articulating linkage exercise machine An elliptical machine has a frame and an operating linkage between the frame and foot supports. Each side of the operating linkage comprises five links that are connected with five pin joints. A foot support is connected to each side of the operating linkage with ea... | 03/02/2010 |
| 7666122 | Elliptical exercise machine An elliptical exercise machine features a pair of translating members to which a pair of foot members is axially secured. The foot members each pivots with respect to the associated translating member. The generated motion allows a user to lock a knee before beginni... | 02/23/2010 |
| 7648446 | System and method for electronically controlling resistance of an exercise machine A stationary exercise machine includes a system for electronically controlling a pedal resistance so as to simulate the riding of a road-going bicycle. The exercise machine includes a control system that monitors pedal velocity and that controls the resistive load g... | 01/19/2010 |
| 7618345 | Exercise equipment with universal PDA cradle An exercise machine has a universal holder that is adapted to facilitate communication between the machine and a variety of portable electronic device configurations. The universal holder can be formed of a material that is generally transparent to infrared signals,... | 11/17/2009 |
| 7544154 | Chain guard arrangement for spinning bikes A guard assembly for exercise bikes has a master sprocket guard and a slave sprocket guard that are separate from each other and that are positioned between a master sprocket and a slave sprocket. A flexible transmitter such as a belt or chain extends through a port... | 06/09/2009 |
| 7544152 | Linkage based exercise machine An exercise machine has a frame and an operating linkage. The operating linkage includes any of a number of mechanisms that can adjust a foot trace generated by the linkage. In one configuration, the foot trace can be adjusted between at least a generally vertical t... | 06/09/2009 |
| 7481744 | Control circuit using toggled activation to reduce inrush currents Aspects of the present invention include a controller circuit for an exercise machine, where the controller circuit includes a board mounted transformer having tolerances near or below the inrush current generally present in activating one or more cooling fans. Acco... | 01/27/2009 |
| 7435205 | Exercise machine including weight measurement system An exercise machine including a weight measurement system which provides a signal representative of a user's weight. An embodiment of the weight measurement system includes at least one load cell outputting a signal used by a microprocessor to determine an accurate ... | 10/14/2008 |
| 7267637 | Exercise and therapeutic trainer An exercise trainer having a first crank arm and a second crank arm respectively connected to a first foot link and a second foot link with foot pedals supported on the foot links, and bearing supports for the foot links removed from the crank arms. A flexible conne... | 09/11/2007 |
| D542365 | Recumbent exercise bicycle | 05/08/2007 |
| 7179202 | Maintenance facilitating exercise machine console An exercise machine, such as a treadmill, has a display arrangement that is configured for easily repair and replacement. The display arrangement comprises a sandwich of a keypad panel, a display panel and an electronics panel. The display arrangement is secured wit... | 02/20/2007 |
| 7163491 | Epicyclic gear exercise device An improved elliptical path exercise machine is provided that is simple and robust in its construction, requires minimal maintenance, provides smooth even exercise motion, and which has a compact foot-print. The apparatus includes a pair of planetary gears, sun/ring... | 01/16/2007 |
| D534226 | Upright exercise bike | 12/26/2006 |
| D532063 | Spinning bicycle | 11/14/2006 |
| 7086995 | Control circuit using toggled activation to reduce inrush currents Aspects of the present invention include a controller circuit for an exercise machine, where the controller circuit includes a board mounted transformer having tolerances near or below the inrush current generally present in activating one or more cooling fans. Acco... | 08/08/2006 |
| D526031 | Upright exercise bike | 08/01/2006 |
| 7070542 | Exercise machine including weight measurement system An exercise machine including a weight measurement system which provides a signal representative of a user's weight. An embodiment of the weight measurement system includes at least one load cell outputting a signal used by a microprocessor to determine an accurate ... | 07/04/2006 |
| 7025710 | Elliptical exercise device and arm linkage An exercise trainer with a stride multiplier mounted on a base having crank arms rotationally supported on the base with foot links connected to the crank arms at one end and supported for movement distally from the crank arms. Foot pedals are respectively supported... | 04/11/2006 |
| D515152 | Recumbent bicycle | 02/14/2006 |
| 6997855 | Automatic safety shut-off switch for exercise equipment The present invention relates to a safety off switch for a treadmill exercise device. If the treadmill exercise device running belt is still rotating even after user has left the treadmill exercise device, then, after a programmed time duration, the treadmill exerci... | 02/14/2006 |
| 6908416 | Exercise and therapeutic trainer An exercise trainer having a first crank arm and a second crank arm respectively connected to a first foot link and a second foot link with foot pedals supported on the foot links, and bearing supports for the foot links removed from the crank arms. A flexible conne... | 06/21/2005 |
| 6878099 | Cooling system for exercise machine An exercise machine, such as a treadmill, has a user cooling system. The cooling system includes at least on fan that is mounted in a display console. The fan draws air through a duct and directs the air toward an upper portion of the user's body. In one arrangement... | 04/12/2005 |
| 6685598 | Epicycle gear exercise device An improved elliptical path exercise machine is provided that is simple and robust in its construction, requires minimal maintenance, provides smooth even exercise motion, and which has a compact foot-print. The apparatus includes a pair of planetary gear... | 02/03/2004 |
| 6575877 | Exercise trainer with interconnected grounded movement An exercise trainer having a frame with a flywheel supported on the frame and first and second crank arms having a common axle on the flywheel. A first foot link and a second foot link are respectively connected to the crank arms for pivotal reciprocating... | 06/10/2003 |
| 6575878 | Automatic safety shut-off switch for exercise equipment The present invention relates to a safety off switch for a treadmill exercise device. If the treadmill exercise device running belt is still rotating even after user has left the treadmill exercise device, then after a programmed time duration, the treadm... | 06/10/2003 |
| 6551218 | Deep stride exercise machine A lower body exercise machine has a pair of laterally spaced apart foot members. The foot members are coupled to a frame which supports the exercise machine. First and second guide linkages are pivotally connected to the frame. First and second articulati... | 04/22/2003 |
| 6511402 | Power controlled exercising machine and method for controlling the same An exercise machine is described which is entirely self-contained without any source of outside power. A rechargeable battery is used to maintain the exercise system operative for a time-out period. At all other times the machine is powered by the user. T... | 01/28/2003 |
| 6416443 | Exercise treadmill expansion control system An exercise treadmill with a deck retention system including a frame with a deck supported resiliently on the frame. A continuous belt having an upper run over the deck and a lower run under the deck is driven by a roller connected to a motor. A glide sur... | 07/09/2002 |
| 6183398 | Exercise trainer with a stride multiplier An exercise trainer having a frame with a flywheel supported on the frame and first and second crank arms having a common axle on the flywheel. A first foot link and a second foot link are respectively connected to the crank arms for pivotal reciprocating... | 02/06/2001 |
| 6176813 | Power controlled exercising machine and method for controlling the same An exercise machine is described which is entirely self-contained without any source of outside power. A rechargeable battery is used to maintain the exercise system operative for a time-out period. At all other times the machine is powered by the user. T... | 01/23/2001 |
| 6135924 | Treadmill with optical position sensing An exercise treadmill machine is provided in which an optical sensor monitors the position of a user on the treadmill and automatically varies the speed of the treadmill to keep the user near a predetermined position on the treadmill's endless belt. The o... | 10/24/2000 |
| 6077193 | Tracking system for promoting health fitness This invention provides a system which allows users to personally create his or her own individual exercise program using any existing type of exercise machine, such as treadmills, bicycles, stair-climbers, weight lifting and the like. The invention provi... | 06/20/2000 |
| 4810946 | Adaptive pulsing motor control for positioning system A machine positioning apparatus and method are disclosed in which motor control values are established by causing intentional overshoot of the destination, and automatically reducing the motor control values each time an overshoot occurs. The system discl... | 03/07/1989 |
| 4571530 | Adaptive pulsing motor control for positioning system An adaptive motor pulsing apparatus for a driven element positioning system is disclosed which divides the available time between recurring motor on periods and motor off periods, and which also varies the duty cycle of the motor during successive on peri... | 02/18/1986 |
| 4544869 | Electronic control circuit for bi-directional motion The disclosure provides an electronic motor control circuit which switches and amplifies to control a bi-directional electric motor, using a symmetrical circuit, each half of which consists of five transistors. The circuit has a logic level input and moto... | 10/01/1985 |
| 4353019 | Adaptive pulsing motor control for positioning system A motor control positioning apparatus and method are disclosed wherein variable duration pulses are fed to a DC motor. After the vicinity of the destination has been reached, the final pulsing stage is initiated, in which a short duration pulse is fed to ... | 10/05/1982 |
| 4168495 | Pre-intrusion detection device An intrusion detection unit comprises a compacitance having an "active" field, the coupling of which is significantly increased when an intruder comes into conductive relation with a doorknob. The unit is hung on the inside doorknob and is so arranged tha... | 09/18/1979 |
| 4063551 | Blood pulse sensor and readout A highly sensitive electronic blood pulse sensor and readout device is disclosed which is self-powered and can be mounted on the subject's wrist. The sensor portion has a plurality of light emitters which are arranged to emit pulsed infra-red light waves ... | 12/20/1977 |
