Low mass manual two-way seat adjuster

A manual seat adjuster for fore and aft positioning of a vehicle seat frame, the adjuster comprising:

• a pair of parallel elongate channels secured to the floor of the vehicle, both channels having an inner space defined by vertical, concave upper and concave lower inner surfaces, the channels having a locking plate with a series of notches associated therewith;
• fore and aft roller means, the fore roller means including a tubular axle housing rotatively mounting elastomeric rollers and the housing means being threadably affixed with the seat frame while at the same time affixing a bracket to the seat frame;
• an independent guide means secured to the bracket and extending into the channels' inner spaces and sliding against the upper surfaces thereof;
• pins slidably mourned in the fore axle housings for locking engagement with the respective locking plates;
• a leaf spring for each pin fixed with respect to the seat frame biasing the pin toward engagement with the locking plate;
• means for removal of the pin from the locking plate;
• and
• stop means to limit fore and aft travel of the seat to a predetermined distance.

An adjuster for fore and aft positioning of a vehicle seat frame, the adjuster comprising:

• a pair of parallel elongate channels secured to the floor of the vehicle, both channels having an inner space generally defined by vertical, upper and lower inner surfaces, the lower inner surface being concave upwardly;
• at least one tubular axle;
• a plurality of independent rollers, at least one of the rollers being mounted on at least one tubular axle, each of the rollers being secured to and supporting opposite sides of the seat frame and being aligned for rolling along the channel lower surfaces, the roller cross-sectional profile being generally aligned with the channel lower inner surface;
• independent guide means secured to the seat frame, at least one guide means separately extending into each channel's inner spaces and continually contacting and sliding against the upper surface of the channel's inner space;
• locking means to selectively secure the seat frame to at least one of the channels at a plurality of predetermined positions, the locking means extending through the tubular axle;
• and
• stop means to limit fore and aft travel of said seat to a predetermined distance.