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US 5,669,489 AGranted
Coding device
AssigneeFritz Hartmann Geratebau GmbH & Co. KG
InventorHermann von Ende
Life of this patent
Estimating the term…
Abstract
A coding device includes a contact carrier (3) and a coding disk (4) that can be set in a plurality of rotary positions relative to the contact carrier (3) to set corresponding codes. Moreover, the coding disk (4) is displaceable between an inactive position, in which it is spaced apart from the contact carrier (3) and no code is effective, and an active position, in which a code corresponding to the rotary position of the coding disk (4) is set on the contact carrier (3). Because a desired code can be selected by rotating the coding disk (4) to the corresponding rotary position while the coding disk is in its inactive position, the code selection can be effected in a potential-free manner.
Claims27
A coding device, comprising:
- a contact carrier;
- a coding disk which cooperates with the contact carrier to set codes;
- mounting means for mounting the coding disk for rotary movement with respect to the contact carrier, the coding disk being rotatable through a plurality of rotary positions which correspond to the codes, and for mounting the coding disk for linear movement between an inactive position, wherein the coding disk is spaced apart from the contact carrier, and an active position, where the coding disk engages the contact carrier to set a code corresponding to a rotary position to which the coding disk was rotated while in the inactive position, said mounting means comprising a rotatable shaft to which the coding disk is coaxially connected;
- and
- indexing means for latching the coding disk in at least one of the rotary positions, said indexing means comprising a ring of teeth, and at least two stop springs configured as leaf springs, said stop springs cooperating with said ring of teeth.
2 more elements
A coding device, comprising:
- a contact carrier;
- a coding disk which cooperates with the contact carrier to set codes;
- mounting means for mounting the coding disk for rotary movement with respect to the contact carrier, the coding disk being rotatable through a plurality of rotary positions which correspond to the codes, and for mounting the coding disk for linear movement between an inactive position, wherein the coding disk is spaced apart from the contact carrier, and an active position, where the coding disk engages the contact carrier to set a code corresponding to a rotary position to which the coding disk was rotated while in the inactive position, said mounting means comprising a rotatable shaft to which the coding disk is coaxially connected, the shaft having a blind bore and the coding disk having a hole which communicates with the blind bore;
- a guide pin which extends into the blind bore through the hole in the coding disk, the guide pin being stationary with respect to the contact carrier;
- and
- a compression spring in the blind bore to bias the coding disk toward its inactive position.
3 more elements
A coding device, comprising:
- a contact carrier;
- a coding disk which cooperates with the contact carrier to set codes;
- mounting means for mounting the coding disk for rotary movement with respect to the contact carrier, the coding disk being rotatable through a plurality of rotary positions which correspond to the codes, and for mounting the coding disk for linear movement between an inactive position, where the coding disk is spaced apart from the contact carrier, and an active position, where the coding disk engages the contact carrier to set a code corresponding to a rotary position to which the coding disk was rotated while in the inactive position, said mounting means comprising a rotatable shaft to which the coding disk is coaxially connected;
- indexing means for latching the coding disk in at least one of the rotary positions, said indexing means comprising a ring of teeth on the rotatable shaft, and a leaf spring which cooperates with the ring of teeth;
- and
- first and second biasing means for biasing the coding disk toward its inactive position, the first biasing means comprising a compression spring which urges the shaft away from the contact carrier, the second biasing means being engaged by the leaf spring when the coding disk is in its active position.
3 more elements
A coding device, comprising:
- a hollow housing having:
- an end with a housing opening and another end with a housing passage;
- a housing wall having inner corners and housing recesses at the inner corners;
- and an inner housing surface around the housing passage;
- a contact carrier;
- a coding disk disposed inside the housing, and cooperating with the contact carrier to set codes;
- mounting means for mounting the coding disk for rotary movement with respect to the contact carrier, the coding disk being rotatable through a plurality of rotary positions which correspond to the codes, and for mounting the coding disk for linear movement between an inactive position, wherein the coding disk is spaced apart from the contact carrier, and an active position, where the coding disk engages the contact carrier to set a code corresponding to a rotary position to which the coding disk was rotated while in the inactive position, said mounting means comprising a rotatable shaft to which the coding disk is coaxially connected, said rotatable shaft extending through the housing passage and including a radially projecting shoulder;
- sealing means for providing a seal between the housing and the shaft, and comprising a sealing ring around the shaft and between the shoulder and the inner housing surface;
- and
- indexing means for latching the coding disk in at least one of the rotary positions, said indexing means including a ring of teeth on the shaft, and a stop spring which cooperates with the ring of teeth, said stop spring being configured as a leaf spring which is secured to the housing wall and having a portion projecting toward the ring of teeth, said leaf spring further having ends extending into the housing recesses.
7 more elements
A coding device, comprising:
- a contact carrier;
- a coding disk which cooperates with the contact carrier to set codes;
- mounting means for mounting the coding disk for rotary movement with respect to the contact carrier, the coding disk being rotatable through a plurality of rotary positions which correspond to the codes, and for mounting the coding disk for linear movement between an inactive position, wherein the coding disk is spaced apart from the contact carrier, and an active position, where the coding disk engages the contact carrier to set a code corresponding to a rotary position to which the coding disk was rotated while in the inactive position, said mounting means comprising a rotatable shaft to which the coding disk is connected;
- indexing means for latching the coding disk in at least one of the rotary positions, said indexing means comprising a ring of teeth on the rotatable shaft, and a leaf spring which engages the ring of teeth when the coding disk is in its inactive position;
- and
- means for urging the coding disk towards its inactive position, said means for urging comprising an annular protruding portion on the shaft, the annular protruding portion having an inwardly tapered surface which is engaged by the leaf spring when the coding disk is in its active position.
3 more elements
Dependencies are inferred from the claim text.