GB2355294A - An outer casing for a hydraulic cylinder - Google Patents

An outer casing for a hydraulic cylinder Download PDF

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Publication number
GB2355294A
GB2355294A GB0018058A GB0018058A GB2355294A GB 2355294 A GB2355294 A GB 2355294A GB 0018058 A GB0018058 A GB 0018058A GB 0018058 A GB0018058 A GB 0018058A GB 2355294 A GB2355294 A GB 2355294A
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GB
United Kingdom
Prior art keywords
hydraulic cylinder
outer casing
combination
open ends
hydraulic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB0018058A
Other versions
GB2355294B (en
GB0018058D0 (en
Inventor
Tsung-Yu Chen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB0018058A priority Critical patent/GB2355294B/en
Publication of GB0018058D0 publication Critical patent/GB0018058D0/en
Publication of GB2355294A publication Critical patent/GB2355294A/en
Application granted granted Critical
Publication of GB2355294B publication Critical patent/GB2355294B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/008—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using hydraulic or pneumatic force-resisters
    • A63B21/0083—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using hydraulic or pneumatic force-resisters of the piston-cylinder type
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
    • A63B22/0048—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with cantilevered support elements pivoting about an axis
    • A63B22/0056—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with cantilevered support elements pivoting about an axis the pivoting movement being in a vertical plane, e.g. steppers with a horizontal axis

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Cardiology (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Actuator (AREA)

Abstract

A combination of an outer casing (30) and a hydraulic cylinder (21) for fitment to for example an exercise device (20) is disclosed. The outer casing (30) consists of a transparent tube which has two open ends inside which the hydraulic cylinder (21) is received. A fitting (23) and a piston rod (22) extend from each of the two ends of the hydraulic cylinder (21) respectively and through each of the two open ends of the outer casing(30). The transparent tube collects and exhibits any leakage of hydraulic fluid resulting from a leaking hydraulic cylinder (21).

Description

2355294
OUTER CASING FOR A HYDRAULIC CYLINDER FIELD OF THE INVENTION
The present invention relates to an outer casing for a hydraulic cylinder used on xercise device such as and the casing is made of transparent material so that the user of the exercise device can see how the cylinder works. BACKGROUND OF THE INVENTION
A conventional hydraulic cylinder is composed of a tubular body in which a piston is movably received and a piston rod is connected to the piston so that when the hydraulic fluid is entered into the tubular body, the piston is moved by the fluid to output work. A main problem about maintenance is leakage of the hydraulic fluid which is moved by pressure so that the hydraulic fluid could leak from any possible crack or gap in the fitting of the cylinder or the tubular body itself Once the hydraulic fluid leaks from the tubular body, the work output from the piston is reduced. Generally, an outer casing is mounted to the tubular body so as to prevent the fluid, lubricant or the like from contacting other objects around the hydraulic cylinder. However, because the outer casing is usually made by iron so that it could get rusted and cannot see whether the hydraulic cylinder has a leakage problem or not.
The present invention intends to provide an outer casing mounted to the, hydraulic cylinder and the outer casing is made of transparent material so that it will not get rusted and the users can see the hydraulic cylinder.
SUMNURY OF THE ENVENTION In accordance with one aspect of the present invention, there is provided a combination of an outer casing and a hydraulic cylinder, wherein the outer casing is a tubular and transparent tube which has two open ends and the hydraulic cylinder is received in the outer casing. A fitting of the hydraulic cylinder extends from one of I the two open ends of the outer casing and a piston rod of the hydraulic cylinder extends from the other open end of the outer casing.
The primary object of the present invention is to provide an outer casing of a hydraulic cylinder wherein the outer casing is made of transparent material so that5 the users can check the leakage problems of the hydraulic cylinder.
These and further objects, features and advantages of the present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, several embodiments in accordance with the present invention.
BRIEF DESCRIPTION OF TBE DRAWINGS
Fig. I is a perspective view to show a stationary step machine having two hydraulic cylinders to which two respective outer casings are mounted, and Fig. 2 is a perspective view to show a combination of a hydraulic cylinder and an outer casing of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to Figs. I and 2, the combination of an outer casing 30 and a hydraulic cylinder 21 of the present invention is illustrated and used on a stationary step machine which has a post 10 with two pedals 11 pivotally connected to the post 10. Each of the two pedals 11 is connected to a hydraulic cylinder 21 which is connected between the pedal I I and a rod 23 on the post 10. Therefore, when a user steps on the two pedals 11 by his/her two feet, the two hydraulic cylinders 21 are actuated alternatively to practice muscles of the feet.
An outer casing 30 is a tubular and transparent tube which has two open ends and a hydraulic cylinder 21 is received in the outer casing 30. A fitting 23 of the hydraulic cylinder 21 extends from one of the two open ends of the outer casing 30 and a piston rod 22 of the hydraulic cylinder 21 extends from the other open end 2 of the outer casing 30. Therefore, the users can clearly see how the hydraulic cylinder 21 works and check the leakage problems whenever the users want to.
While we have shown and described various embodiments in accordance with the present invention, it should be clear to those skilled in the art that ftirther embodiments may be made without departing from the scope and spirit of the present invention.
3 WHAT IS CLAMED IS:
1. A combination of an outer casing and a hydraulic cylinder, wherein said outer casing is a tubular and transparent tube which has two open ends, said hydraulic cylinder received in said outer casing, a fitting of said hydraulic cylinaer extending from one of said two open ends of saidouter casing and a piston rod of said hydraulic cylinder extending from the other open end of said outer casing.
2. The combination of an outer casing and a hydraulic cylinder substantially as hereinbefore described with reference to and as shown in the accompanying drawings.
3. An exercise device which includes the combination claimed in either of the preceding claims.
4 Amendments to the claims have been filed as i

Claims (3)

Clairns:-
1 - The combination of an outer casing and a" hydraulic cylinder, wherein the outer casing is a transparent tube which has two open ends, the hydraulic cylinder being received in the outer casing, with a fitting of the hydraulic cylinder extending from one of the two open ends of the outer casing and a piston rod of the hydraulic cylinder extending from the other open end of the outer casing.
2. The combination of an outer casing and a hydraulic cylinder substantially as hereinbefore described with reference to and as shown in the accompanying drawings.
3. An exercise device which includes the combination claimed in either of the preceding claims.
GB0018058A 2000-07-25 2000-07-25 Outer casing for a hydraulic cylinder Expired - Fee Related GB2355294B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0018058A GB2355294B (en) 2000-07-25 2000-07-25 Outer casing for a hydraulic cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0018058A GB2355294B (en) 2000-07-25 2000-07-25 Outer casing for a hydraulic cylinder

Publications (3)

Publication Number Publication Date
GB0018058D0 GB0018058D0 (en) 2000-09-13
GB2355294A true GB2355294A (en) 2001-04-18
GB2355294B GB2355294B (en) 2001-08-22

Family

ID=9896177

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0018058A Expired - Fee Related GB2355294B (en) 2000-07-25 2000-07-25 Outer casing for a hydraulic cylinder

Country Status (1)

Country Link
GB (1) GB2355294B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10251848A1 (en) * 2002-11-07 2004-05-19 Juri Riedel Muscle training system for calf muscles, feet and toes has hinged movable footboard supported on hydraulic cylinders to allow tilting about central fulcrum

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0391397A1 (en) * 1989-04-05 1990-10-10 Siegfried Leverberg Education hydraulics device
US5468204A (en) * 1994-10-05 1995-11-21 Michelle Hsiu-Feng Wang Hydraulic exerciser with reciprocating hydraulic cylinder pair

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0391397A1 (en) * 1989-04-05 1990-10-10 Siegfried Leverberg Education hydraulics device
US5468204A (en) * 1994-10-05 1995-11-21 Michelle Hsiu-Feng Wang Hydraulic exerciser with reciprocating hydraulic cylinder pair

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10251848A1 (en) * 2002-11-07 2004-05-19 Juri Riedel Muscle training system for calf muscles, feet and toes has hinged movable footboard supported on hydraulic cylinders to allow tilting about central fulcrum

Also Published As

Publication number Publication date
GB2355294B (en) 2001-08-22
GB0018058D0 (en) 2000-09-13

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20050725