Scale with decoupling mechanism and windshield

Patent metadata

Field	Value
Publication number	US-9593979-B2
Application number	US-201313935197-A
Country	US
Kind code	B2
Filing date	Jul 3, 2013
Priority date	Jan 3, 2011
Publication date	Mar 14, 2017
Grant date	Mar 14, 2017

Abstract

A scale with a weighing system ( 14 ), a weighing chamber ( 16 ) that is delimited by a windshield ( 18 ), and a drive for opening and closing the windshield ( 18 ). The scale has a load transferring part ( 32, 34 ) with which the weight of the load is transferred onto the weighing system ( 14 ). A decoupling mechanism is mechanically connected to the drive for rotating the windshield ( 18 ) such that the weighing system ( 14 ) is mechanically decoupled from the load transferring part in the load direction if the windshield ( 18 ) is open in order to not introduce transverse forces into the weighing system ( 14 ) during loading of the weight.

First claim

The invention claimed is:

1. A scale comprising:
a weighing system,
a weighing chamber which is delimited by a windshield and into which a load transferring part projects, wherein the load transferring part accepts the weight of a load and introduces the weight into the weighing system in a load direction,
a drive for opening and closing the windshield, and
a decoupling mechanism which mechanically interconnects the windshield and the load transferring part, and which is configured to decouple the weighing system from the load transferring part in the load direction in response to an opening of the windshield and is configured to couple the weighing system in the load direction to the load transferring part in response to a closing of the windshield.

2. The scale as claimed in claim 1 , wherein the decoupling mechanism comprises a lifting mechanism for lifting and lowering the load transferring part.

3. A scale comprising:
a weighing system,
a weighing chamber which is delimited by a windshield and into which a load transferring part projects, wherein the load transferring part accepts the weight of a load and introduces the weight into the weighing system in a load direction,
a drive for opening and closing the windshield, and
a decoupling mechanism which decouples the weighing system from the load transferring part in the load direction when the windshield is opened and couples the weighing system in the load direction to the load transferring part when the windshield is closed,
wherein the decoupling mechanism comprises a lifting mechanism for lifting and lowering the load transferring part, and
wherein the lifting mechanism mechanically converts a rotary movement of the windshield into a lifting or lowering movement.

4. The scale as claimed in claim 3 , wherein the lifting mechanism comprises a ramp surface at one of two mutually opposing parts which rotate relative to one another.

5. The scale as claimed in claim 4 , wherein the lifting mechanism further comprises a roller element which runs along the ramp surface.

6. The scale as claimed in claim 5 , wherein the coupling member is an annular base attached to a lower edge of the windshield and extending radially inwardly from the edge, the annular base comprising at least one radially inwardly extending mounting plate for the roller element.

7. The scale as claimed in claim 1 , wherein the load transferring part is arranged concentrically to a vertically movable lifting part which is arranged partially under the load transferring part and is lifted and comes into contact with the load transferring part.

8. The scale as claimed in claim 7 , wherein the lifting part is secured against twisting.

9. The scale as claimed in claim 1 , wherein the load transferring part comprises a scale pan.

10. The scale as claimed in claim 9 , wherein the scale pan has a rearwardly projecting plug which, in the coupled position, rests against the weighing system.

11. The scale as claimed in claim 1 , wherein the load transferring part rests with a receptacle cone on a post of the weighing system in the coupled position, and wherein the post is separated from the receptacle cone of the load transferring part in the decoupled position.

12. A scale comprising:
a weighing system,
a weighing chamber which is delimited by a windshield and into which a load transferring part projects, wherein the load transferring part accepts the weight of a load and introduces the weight into the weighing system in a load direction,
a drive for opening and closing the windshield, and
a decoupling mechanism which mechanically interconnects the windshield and the load transferring part, and which decouples the weighing system from the load transferring part in the load direction when the windshield is opened and couples the weighing system in the load direction to the load transferring part when the windshield is closed,
wherein the windshield has a window and the windshield is driven by the drive to open and close by rotating.

13. A scale comprising:
a weighing system,
a weighing chamber which is delimited by a windshield and into which a load transferring part projects, wherein the load transferring part accepts the weight of a load and introduces the weight into the weighing system in a load direction,
a drive for opening and closing the windshield, and
a decoupling mechanism which decouples the weighing system from the load transferring part in the load direction when the windshield is opened and couples the weighing system in the load direction to the load transferring part when the windshield is closed,
wherein the load transferring part is contacted during decoupling at a plurality of sites around the central axis thereof.

14. The scale as claimed in claim 4 , wherein the two mutually opposing parts are configured to rotate relative to one another at a weighing chamber base for creating the lifting or lowering movement.

15. The scale as claimed in claim 5 , wherein the roller element is mounted at a coupling member between a drive actuator and the windshield.

16. The scale as claimed in claim 7 , wherein the lifting part comprises a weighing chamber base.

17. The scale as claimed in claim 12 , further comprising a non-rotatable closing plate for the window, which is configured to move radially against the windshield when the windshield is driven to rotate closed.

Assignees

• Sartorius Lab Instr Gmbh & Co Kg

Inventors

• Iaia Aldo

Classifications

• G01G21/28 Primary

  Frames, Housings · CPC title

• G01G23/02

  Relieving mechanisms; Arrestment mechanisms · CPC title

• G01G21/286 Primary

  with windshields · CPC title