A tuning apparatus for a stringed musical instrument is provided. The apparatus includes a dual-action cam clamp assembly and a plurality of string-contacting members with easy-to-adjust rocker arms. The dual-action cam clamp assembly removably attaches to a desired longitudinal position on the instrument's neck. Each of the string-contacting members is rotatably supported by a rocker arm shaft, and the easy-to-adjust rocker arms are adapted to rotate about the longitudinal axis of a two-part shaft of the clamp assembly independently of the other string-contacting members. Each member also adjustably impinges upon and urges a given string or course thereof on the instrument toward a user-selectable one of three different longitudinal positions on the neck's front surface, these positions including a home position, a home−1 position, and a home+1 position.

This invention relates to a method to detect the connection between two food processing—, food-preparation and/or handling-devices (1, 2), wherein one device (1) comprises detection means (31) with a sensor (6) and sensor activation means (18). The invention further relates to a set with a first device (1) and a second food processing—, food preparation and/or handling device (2), which are reversibly connected wherein the first device (1) comprises a safety device (10, 20) with a sensor (6) and an activation means (18).

A mounting system, a clamp and method for mounting to a structural component. The mounting system includes a bracket with a mounting projection, the mounting projection has a mounting opening which extends between side walls of the mounting projection. A clamp has a mounting portion and a clamping portion, the mounting portion has a projection receiving opening which receives the mounting projection therein. A latching mechanism extends from the clamping portion, the latching mechanism has a securing which is movable between an unlocked position and a locked position.

A mounting system, a clamp and method for mounting to a structural component. The mounting system includes a bracket with a mounting projection, the mounting projection has a mounting opening which extends between side walls of the mounting projection. A clamp has a mounting portion and a clamping portion, the mounting portion has a projection receiving opening which receives the mounting projection therein. A latching mechanism extends from the clamping portion, the latching mechanism has a securing which is movable between an unlocked position and a locked position.

A coupling/uncoupling device includes a columnar member configured by a divided pair of semicircular members, and a pair of coupling members forming a circular holding section that holds the columnar member. The circular holding section includes a circular inner surface section with which an outer circumferential surface of the columnar member is in slide contact, the circular inner surface section being formed from inner circumferential surfaces of a semicircular section in one coupling member and a semicircular section in the other coupling member. The columnar member is configured to be rotatable in both clockwise and counterclockwise directions along the circular inner surface section about a reference position where a contact surface of the pair of coupling members and a dividing surface of the columnar member are flush with each other.

A coupling/uncoupling device includes a columnar member configured by a divided pair of semicircular members, and a pair of coupling members forming a circular holding section that holds the columnar member. The circular holding section includes a circular inner surface section with which an outer circumferential surface of the columnar member is in slide contact, the circular inner surface section being formed from inner circumferential surfaces of a semicircular section in one coupling member and a semicircular section in the other coupling member. The columnar member is configured to be rotatable in both clockwise and counterclockwise directions along the circular inner surface section about a reference position where a contact surface of the pair of coupling members and a dividing surface of the columnar member are flush with each other.

In some examples, an apparatus can include a base plate, a plurality of support platforms connected to the base plate, where each of the plurality of support platforms include an attachment plate to connect each support platform to the base plate, a spring plate, and a flange, and a cam to interface with the base plate, where the plurality of support platforms are to radially translate with respect to an axis of the base plate when the cam is rotated.

In some examples, an apparatus can include a base plate, a plurality of support platforms connected to the base plate, where each of the plurality of support platforms include an attachment plate to connect each support platform to the base plate, a spring plate, and a flange, and a cam to interface with the base plate, where the plurality of support platforms are to radially translate with respect to an axis of the base plate when the cam is rotated.

The invention relates to a backrest support for a seating furniture, in particular for an office chair.

In order to provide a piece of seating furniture having a backrest, in the case of which particularly simple and safe installation and removal of the backrest is possible, it is proposed to design the backrest support (2) in two parts, having a first support part (4), which is connectable to a second support part (5) without a tool, with a releasable connection being formed, wherein, in the assembled state, the position of the two support parts (4, 5) with respect to each other can be secured without a tool by means of a lock (6).

A removable fixing device 1 for fixing equipment A on a support B, with: a compressible planar piece 5, an operating lever comprising a cam lever 2, and an assembly rod 3 having a first end and a second end; with: the second end of the assembly rod 3 being provided with a tightening means (4); the compressible planar piece 5, said operating lever comprising a cam lever 2 and the tightening means 4 arranged in tightened position being disposed around the assembly rod 3 in an assemblage; said operating lever comprising a cam lever 2 being arranged so that a rotation of the cam lever 2 about an axis y at right angles to the axis z of the assembly rod 3 induces a displacement of the cam lever 2 between a tightened position and a loosened position.