Switch arrangement including means for facilitating accurate location thereof

Claim 5

A device as claimed in claim 2, further comprising: a third alignment aperture formed in said switch body, said third alignment aperture being located so that when said first, second and third alignment apertures are aligned said switch body assumes said desired predetermined orientation with respect to said transmission body.

Claim 6

A device as claimed in claim 3, wherein said switch body is mounted on said transmission body by a fastening arrangement which permits said switch body to be rotatable and to be selectively secured to said transmission body.

Claim 7

A device as claimed in claim 2, wherein said select lever is pivotal about a first axis and said first aperture is formed in said lever so that the center thereof is located at a first radius from said first axis, and wherein said switch lever is pivotal about a second axis and said second alignment aperture is formed so that the center thereof is located at a second radius from said second axis, said first and second radii being selected so that the arcs described by said centers intersect at a point.

Claim 8

A device as claimed in claim 5, wherein said point is selected to coincide with the center of said third alignment aperture when said switch body assumes said predetermined desired orientation.

Claim 9

A device as claimed in claim 3, wherein said third alignment aperture is adapted to receive said probe.

Claim 10

A device as claimed in claim 2, further comprising a detent mechanism for selectively holding said select lever in a selected one of a plurality preselected positions, said detent mechanism comprising: a plate synchronously movable with said select lever, said plate being formed with a plurality of sequential recesses, and a spring fixed at one end to said transmission and provided at the other end with a rolling device receivable in each of said plurality of recesses.

Claim 11

A device as claimed in claim 8, wherein said plate is pivotal about said first axis and is operatively connected to said transmission in a manner that the angular position of said plate determines the state of said transmission.

Claim 12

A device as claimed in claim 8, further comprising a manual selector valve which is moved by the movement of said plate.

Claim 13

In a transmission a transmission casing in which a gear train is disposed; a control device for controlling said gear train including; (a) a manually operable member, and (b) a gear select lever pivotally mounted on said casing and operatively connected between said gear train and said manually operable member, said gear select lever being arranged to induce said gear train to assume a predetermined state upon assuming a predetermined position under the influence of said manually operable member; a switch for indicating when said transmission assumes said predetermined state, said switch including: (a) a switch body adjustably fastened to said casing, and (b) a switch lever pivotally mounted on said switch body and operatively connected with said gear select lever; and an arrangement for facilitating the positional alignment of said switch body on said casing so as to accurately output a signal indicating when said transmission assumes said predetermined state, comprising: a first aperture formed in said gear select lever; a second aperture formed in said switch lever; and a third aperture formed in said switch body; said first, second and third apertures being arranged to align such that the axis of one aperture intersects the middle of the width of each of the other two apertures simultaneously only when said gear select lever has assumed said predetermined position and said switch body has assumed a desired orientation with respect to said transmission casing and in which said switch lever has assumed a desired orientation so that said switch indicates said transmission has assumed said predetermined state.

Claim 14

In a transmission a transmission casing in which a gear train is disposed; a control device for controlling said gear train including; (a) a manually operable member, and (b) a gear select lever pivotally mounted on said casing and operatively connected between said gear train and said manually operable member, said gear select lever being arranged to induce said gear train to assume a predetermined state upon assuming a predetermined position under the influence of said manually operable member; a switch for indicating when said transmission assumes said predetermined state, said switch including: (a) a switch body adjustably fastened to said casing, and (b) a switch lever pivotally mounted on said switch body and operatively connected with said gear select lever; and an arrangement for facilitating the positional alignment of said switch body on said casing so as to accurately output a signal indicating when said transmission assumes said predetermined state, comprising: a first aperture formed in said gear select lever; a second aperture formed in said switch lever; and a third aperture formed in said switch body; said first, second and third apertures being arranged to align such that the axis of one aperture intersects the middle of the width of each of the other two apertures simultaneously only when said gear select lever has assumed said predetermined position and said switch body has assumed a desired orientation with respect to said transmission casing and in which said switch lever has assumed a desired orientation so that said switch indicates said transmission has assumed said predetermined state.

Claim 15

A transmission as claimed in claim 11, wherein said first and second apertures define means into which a probe may be inserted to lock said gear select lever and said switch lever in a predetermined relationship and thus compenstate for any play in said gear select lever which may induce an incorrect positional adjustment of said switch body.

Claim 16

A transmission as claimed in claim 12, wherein said third aperture is arranged to receive said probe therein.

Claim 17

A device as claimed in claim 3, wherein said select lever is pivotal about a first axis and said first aperture is formed in said lever so that the center thereof is located at a first radius from said first axis, and wherein said switch lever is pivotal about a second axis and said second alignment aperture is formed so that the center thereof is located at a second radius from said second axis, said first and second radii being selected so that the arcs described by said centers intersect at a point.

Claim 18

An arrangement comprising: a casing; a switch body; means detachably securing said switch body to said casing and for permitting the position of said switch body on said casing to be adjusted by a predetermined amount; a first lever pivotally mounted on said casing so as to be pivotal about a first axis and essentially immovable in the direction of said first axis; means defining a first aperture in said first lever at a first predetermined distance from said first axis; a second lever pivotally mounted on said switch body so as to be pivotal about a second axis which is essentially parallel with and spaced from said first axis, said second lever being essentially immovable in the direction of said second axis; means defining a second aperture in said second lever at a second predetermined distance from said second axis, said second aperture having a width which is essentially the same as the width of said first aperture; said first and second predetermined distances being selected so that the locii of the centers of said first and second apertures intersect at first and second locations and so that when said apertures are aligned at said first and second locations and a probe is inserted therethrough, said first and second levers are locked together in a manner that prevents either from pivoting about its respective axis; and means defining a third aperture in said switch body, said third aperture having a width essentially the same as the widths of said first and second apertures, said first, second and third apertures being such that the axis of the third aperture intersects the middle of the width of each of the first and second apertures simultaneously only when said switch body is located in a desired predetermined position on said casing, and therefore the position of said switch body on said casing is easily adjustable to said desired position by means of a straight probe inserted through said first, second and third apertures and adjusting said securing means to fasten said switch body in said desired position in which said first, second and third apertures are aligned by said probe.

Claim 19

An arrangement comprising: a casing; a switch body; means detachably securing said switch body to said casing and for permitting the position of said switch body on said casing to be adjusted by a predetermined amount; a first lever pivotally mounted on said casing so as to be pivotal about a first axis and essentially immovable in the direction of said first axis; means defining a first aperture in said first lever at a first predetermined distance from said first axis; a second lever pivotally mounted on said switch body so as to be pivotal about a second axis which is essentially parallel with and spaced from said first axis, said second lever being essentially immovable in the direction of said second axis; means defining a second aperture in said second lever at a second predetermined distance from said second axis, said second aperture having a width which is essentially the same as the width of said first aperture; said first and second predetermined distances being selected so that the locii of the centers of said first and second apertures intersect at first and second locations and so that when said apertures are aligned at said first and second locations and a probe is inserted therethrough, said first and second levers are locked together in a manner that prevents either from pivoting about its respective axis; and means defining a third aperture in said switch body, said third aperture having a width essentially the same as the widths of said first and second apertures, said first, second and third apertures being such that the axis of the third aperture intersects the middle of the width of each of the first and second apertures simultaneously only when said switch body is located in a desired predetermined position on said casing, and therefore the position of said switch body on said casing is easily adjustable to said desired position by means of a straight probe inserted through said first, second and third apertures and adjusting said securing means to fasten said switch body in said desired position in which said first, second and third apertures are aligned by said probe.