LandOfFree - US Patents - Listing for Chairs and seats,Back movement resiliently opposed in operating position

Chairs and seats – Back movement resiliently opposed in operating position – Back and seat adjust simultaneously

Seating unit with novel flexible supports

Chairs and seats – Back movement resiliently opposed in operating position – Back and seat adjust simultaneously

Seating unit with variable back stop and seat bias

Chairs and seats – Back movement resiliently opposed in operating position

Seating with shape-changing back support frame

Chairs and seats – Back movement resiliently opposed in operating position – Constantly oriented during up-and-down movement

Shock absorber for a back rest of a chair

Chairs and seats – Back movement resiliently opposed in operating position – Back adjusts independent of seat

Split back chair

Chairs and seats – Back movement resiliently opposed in operating position – Back adjusts independent of seat

Split back chair

Chairs and seats – Back movement resiliently opposed in operating position – Back secured to resilient upright bar or rod

Split back chair

Chairs and seats – Back movement resiliently opposed in operating position – Back secured to resilient upright bar or rod

Split-back chair, particularly office chair

Chairs and seats – Back movement resiliently opposed in operating position – Resilient support includes armrest

Spring chair frame and method of fabricating same

Chairs and seats – Back movement resiliently opposed in operating position – Back and bottom adjust in a fixed relationship

Spring unit for weight adjustment of a chair

Chairs and seats – Back movement resiliently opposed in operating position – Resilient support includes armrest

Spring-action chair

Chairs and seats – Back movement resiliently opposed in operating position – Back and bottom adjust in a fixed relationship

Sprung seat frame

Chairs and seats – Back movement resiliently opposed in operating position – Back and bottom adjust in a fixed relationship

Steel spring with dwell for chairs

Chairs and seats – Back movement resiliently opposed in operating position – Back and bottom adjust in a fixed relationship

Steel wire chair with springs

Chairs and seats – Back movement resiliently opposed in operating position – Back secured to resilient upright bar or rod

Stenographer's chair

Chairs and seats – Back movement resiliently opposed in operating position – Back secured to resilient upright bar or rod

Structure for attaching spring

Chairs and seats – Back movement resiliently opposed in operating position – Back secured to resilient upright bar or rod

Structure for connecting members

Chairs and seats – Back movement resiliently opposed in operating position – Back and seat adjust simultaneously

Support for tilting or synchronized chairs

Chairs and seats – Back movement resiliently opposed in operating position – Back adjusts independent of seat

Support member