Abstract: A latching mechanism is provided for engaging an aircraft surface panel to a support member. The aircraft panel is provided with a post extending from the lower surface, which extends through a panel support member into a post engagement mechanism. The post engagement mechanism defines a rotatable sleeve, which rotates for locking and unlocking engagement between the post and the post engagement mechanism. Locking engagement continues when power to the post engagement actuator is terminated. The post engagement mechanism may utilize various types of actuators, including mechanical, hydraulic, and pneumatic. The aircraft panel and the panel support member are translatable into and out of abutting engagement independent of the need for any contact with the aircraft panel upper surface.

Abstract: A pneumatic fastening mechanism is provided for fastening an aircraft surface panel to an aircraft panel support member. The panel includes a plurality of receptacles extending from the panel lower surface. The panel support member includes a corresponding plurality of panel engagement mechanisms, disposed on the support member lower surface, and translatable through the support member to engage the receptacles. The panel engagement mechanisms are extendable from a first position, wherein the panel abuts and is engaged to the panel support member, to second position wherein the panel is elevated above the panel support member upper surface where the panel may be unlocked and separated from the panel engagement mechanism. The panel engagement mechanism is operative to elevate and release the panel in response to changes in fluid pressure communicated to the panel engagement mechanisms.

Abstract: A magnetic latching system is provided for removably latching a panel to an aircraft surface portion. The latching system includes a removable axis panel engageable to a latching land. The panel and land define opposing magnetically attractive surface portions, with a body of magnetic material disposed there between. An inflatable seal is also disposed intermediate the panel and the land. Upon inflation, the inflatable seal is operative to urge the panel away from the land far enough to reconnect magnetic engagement between the panel and the land, sufficient to permit disengagement of the panel from the land.

Abstract: A latching mechanism is provided for engaging an aircraft surface panel to a support member. The aircraft panel is provided with a post extending from the lower surface, which extends through a panel support member into a post engagement mechanism. The post engagement mechanism defines a rotatable sleeve, which rotates for locking and unlocking engagement between the post and the post engagement mechanism. Locking engagement continues when power to the post engagement actuator is terminated. The post engagement mechanism may utilize various types of actuators, including mechanical, hydraulic, and pneumatic. The aircraft panel and the panel support member are translatable into and out of abutting engagement independent of the need for any contact with the aircraft panel upper surface.

Abstract: A magnetic latching system is provided for removably latching a panel to an aircraft surface portion. The latching system includes a removable axis panel engageable to a latching land. The panel and land define opposing magnetically attractive surface portions, with a body of magnetic material disposed there between. An inflatable seal is also disposed intermediate the panel and the land. Upon inflation, the inflatable seal is operative to urge the panel away from the land far enough to reconnect magnetic engagement between the panel and the land, sufficient to permit disengagement of the panel from the land.

Abstract: 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 gears and at least one crank. The crank is supported and arranged so as to be rotatable about a crank axis. Each planetary gear is pivotably secured to the crank about a pivot point located and arranged such that as the crank is rotated the planetary gears engage and rotate relative to their corresponding sun/ring gears while simultaneously revolving about the crank axis so as to form right and left epicylic gear trains. Two foot pedals are each pivotably secured to a corresponding one of the planetary gears and are sized and arranged to support the feet of a user. The layout and geometries of the device are such that each foot-pedal follows a substantially elliptical foot-path as the crank is rotated.

Abstract: 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 connection connects a ground point, the foot pedals, and the foot links to provide relative movement in a modified ellipse as to the ground point of at least twice the length of each crank arm. A seat is mounted on the trainer having a motor and control for raising and lowering the seat with respect to the foot pedals. The first and second crank arms are connected to a motor for driving the crank arms at a given speed which can supplement a user's effort or provide a load to a user beyond a given speed.

Abstract: 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 gears and at least one crank. The crank is supported and arranged so as to be rotatable about a crank axis. Each planetary gear is pivotably secured to the crank about a pivot point located and arranged such that as the crank is rotated the planetary gears engage and rotate relative to their corresponding sun/ring gears while simultaneously revolving about the crank axis so as to form right and left epicylic gear trains. Two foot pedals are each pivotably secured to a corresponding one of the planetary gears and are sized and arranged to support the feet of a user. The layout and geometries of the device are such that each foot-pedal follows a substantially elliptical foot-path as the crank is rotated.

Abstract: 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 gears and at least one crank. The crank is supported and arranged so as to be rotatable about a crank axis. Each planetary gear is pivotably secured to the crank about a pivot point located and arranged such that as the crank is rotated the planetary gears engage and rotate relative to their corresponding sun/ring gears while simultaneously revolving about the crank axis so as to form right and left epicylic gear trains. Two foot pedals are each pivotably secured to a corresponding one of the planetary gears and are sized and arranged to support the feet of a user. The layout and geometries of the device are such that each foot-pedal follows a substantially elliptical foot-path as the crank is rotated.