# US 7,610,845 B2 · Adjustable stop assembly for a piston-cylinder unit

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 7,610,845 B2
- Document ID: US7610845B2
- Status: Granted
- Kind: B2
- Application number: 11/575,290
- Filed: 2005-09-30
- Published: 2008-03-13
- Granted: 2009-11-03
- Earliest claimed: 2004-10-01
- Inventors: Uwe Weiner; Oliver Schröter
- Web page: https://patentgrep.com/patent/US7610845B2

## CPC

- F15B 15/24: for restricting the stroke
- F16B 37/0892: {in two or more pieces, e.g. assemblies made by two C-shaped nuts mutually interlocked, or retained by an additional member (F16B37/0885 takes precedence)}
- F15B: SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F16B: DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING (couplings for transmitting rotation F16D)

## Abstract

The invention concerns an adjustable stop assembly, for limiting a stroke, designed for a piston-cylinder unit comprising a cylinder and a piston having a rod, said stop assembly serving to limit the stroke of a lifting device on a forklift truck. Said assembly has a clamping ring (2) axially slidable and lockable on the piston rod, comprising, in one region of its external periphery, a threaded portion. Said assembly also comprises a threaded ring (3) which can be screwed on the threaded portion of the clamping ring and whereof the side facing the cylinder serves as stop thereon.

## Claims

### Claim 1

An adjustable stop assembly used for stroke limitation for a piston/cylinder unit having a cylinder and a piston, which has a piston rod, for the stroke limitation of a lifting apparatus on a forklift truck, said assembly having a clamping ring, which is axially displaceable on the piston rod, can be fixed in clamping fashion on the piston rod and has a threaded section in a region of its outer circumference, and a threaded ring, which can be screwed onto the threaded section of the clamping ring and whose front edge facing the cylinder is used as a stop on the cylinder,
wherein the clamping ring and the threaded ring are each split the two ring halves of the clamping ring being capable of being connected to one another by means of a first connection apparatus and of being fixedly clamped on the piston rod by means of the first connection apparatus, the two ring halves of the threaded ring being capable of being connected to one another by means of a second connection apparatus such that the threaded ring can be screwed onto the threaded sections of the ring halves of the clamping ring and clamped to the threaded sections of the ring halves of the clamping ring by means of the second connection apparatus, the ring halves of the clamping ring having flange sections on their end section facing away from the associated cylinder, the first connection apparatus being arranged on said flange sections, the ring halves of the clamping ring are connected by means of at least one screw, which extends through two mutually associated flange sections of the ring halves.

### Claim 2 (depends on 1)

The stop assembly as claimed in claim 1, the connection apparatus of the threaded ring having a bolt, which extends through a hole in the flange section of one ring half and is capable of being screwed into a threaded drilled hole in the flange section of the other ring half.

### Claim 3 (depends on 1)

The assembly as claimed in claim 1, wherein at least one of said clamping ring halves extends over less than 180 degrees.

### Claim 4 (depends on 1)

The assembly as claimed in claim 1, wherein said second connection apparatus includes a pair of hole and recess sets on opposing sides of one of said threaded ring halves, and a pair of holes on opposing sides of the other of said threaded ring halves, and a pair of adjusting screws in communication with a respective hole and recess set and hole.