EP0400105B1 - Vorrichtung zur aufbewahrung von tennisbällen - Google Patents

Vorrichtung zur aufbewahrung von tennisbällen Download PDF

Info

Publication number
EP0400105B1
EP0400105B1 EP89909549A EP89909549A EP0400105B1 EP 0400105 B1 EP0400105 B1 EP 0400105B1 EP 89909549 A EP89909549 A EP 89909549A EP 89909549 A EP89909549 A EP 89909549A EP 0400105 B1 EP0400105 B1 EP 0400105B1
Authority
EP
European Patent Office
Prior art keywords
container
pump
pump housing
cover
piston
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.)
Expired - Lifetime
Application number
EP89909549A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0400105A1 (de
Inventor
Nicole Egloffstein
Johann K. Wild
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.)
PMC Patents Management and Consulting Luxembourg Holding SA
Original Assignee
PMC Patents Management and Consulting Luxembourg Holding SA
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 PMC Patents Management and Consulting Luxembourg Holding SA filed Critical PMC Patents Management and Consulting Luxembourg Holding SA
Priority to AT89909549T priority Critical patent/ATE73680T1/de
Publication of EP0400105A1 publication Critical patent/EP0400105A1/de
Application granted granted Critical
Publication of EP0400105B1 publication Critical patent/EP0400105B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A63B39/00—Hollow non-inflatable balls, i.e. having no valves
    • A63B39/02—Arrangements for maintaining the pressure
    • A63B39/025—Arrangements for maintaining the pressure using containers with pressurising means for balls not in use
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2225/00—Miscellaneous features of sport apparatus, devices or equipment
    • A63B2225/30—Maintenance

Definitions

  • the invention relates to a device (according to the preamble of claim 1) for storing tennis balls under pressure.
  • a device according to the preamble of claim 1 is known for example from DE-U-8702 822.
  • the pump housing of this device is arranged at a very small distance close to the tubular container, the pump handle ending approximately in the middle of the container in the inserted state. Due to this construction, holding the device is tedious and the pumping involves a considerable risk of injury (pinching the fingers between the pump handle and the container).
  • the invention is therefore based on the object of designing a device according to the preamble of claim 1 that - while at the same time being simple and inexpensive to manufacture - it is possible to hold the device comfortably and to pump easily and safely.
  • the device according to the invention for storing tennis balls under pressure illustrated in the drawing contains a tubular container 1 and a piston pump 2.
  • the longitudinal axis 3 of the container 1 is kinked in the central region of the height of the container, the upper section 1a of the container 1 running parallel to the axis 4 of the pump housing 5 of the piston pump 2, while the lower section 1b of the container 1 is at an acute angle with the axis 4 of the pump housing 5 forms.
  • the pump housing of the piston pump 2 is arranged at a sufficient distance from the container 1, so that between the pump housing 5 and the container 1 there is a handle opening 6 which - due to the kinked shape of the longitudinal axis 3 of the container 1 - widens upwards .
  • the pump housing 5 of the piston pump 2 is connected to the container 1 both at the lower end (via a common screw thread attachment 7 and additionally via a narrow web 8) and at the upper end (via webs 9, 10).
  • the pump housing 5 and the container 1 are expediently made in one piece by injection molding from impact-resistant plastic.
  • the container 1 is provided at the upper end with a screw cap 11. At the lower end of the container 1 is closed by a screwable bottom 12.
  • the diameter of this base 12 is slightly larger than the sum of the diameters of the container 1 and the pump housing 5, so that the vertical projection of the pump housing 5 lies within the floor plan of the base 12.
  • the piston pump 2 contains a piston 13 which is attached to the lower end of a piston rod 14 which has a pump handle 15 at the upper end.
  • the pump housing 5 is closed at the upper end by a screw cap 16 through which the piston rod 14 is slidably guided.
  • the piston rod 14 is profiled on its circumference (see FIG. 2), so that longitudinal channels 17 are formed between the webs 14a of the piston rod 14, via which air, when a safety valve 18 provided in the piston 13 responds, through the air for sliding the piston rod 14 serving bore of the screw cap 16 can escape.
  • a check valve 21 is attached directly to the bottom 19 of the pump pressure chamber 20. It contains a cup-shaped valve body 22 which is open towards the pump pressure chamber 20 and the peripheral wall of which is at least one Contains air passage opening 23, which is covered on the outside by an elastic sleeve 24.
  • the piston 13 of the piston pump 2 illustrated in detail in FIG. 5 contains a sealing ring 25 which is arranged in a groove 28 delimited by two flanges 26, 27 and which has a conical inner wall 29.
  • the safety valve 18 arranged in the piston 13 contains a valve body 30 which is pressed onto the valve seat 32 by a spring 31.
  • An air passage opening 33 is located in the wall surrounding the spring 31.
  • a sealing ring 34 is arranged, which is provided in a groove 35 of the container 1.
  • the screw thread 36 of the container 1 is provided with at least one ventilation channel 37 running parallel to the longitudinal axis 3, the function of which will be explained in more detail.
  • the container 1 and the cap 11 are provided with stops 38 and 39, which limit the rotational movement of the cap 11 in the closed position.
  • the dome-shaped closure lid 11 is provided on its outside with ribs 40 which serve as gripping aids and enable the lid to be easily closed tightly (up to the stop position).
  • the dome-shaped bottom 12 is provided on its outside with ribs 42 which serve as feet.
  • the outer wall of the pump housing 5 has a profiling 5a, through which the grip of the pump housing 5 designed as a handle is increased.
  • the closure cover 11, the base 12, the pump handle 15 made in one piece with the piston rod 14 and the screw cover 16 of the pump housing 5 are made of impact-resistant plastic by injection molding.
  • the piston 13 is expediently made of a highly slidable plastic with high abrasion resistance.
  • the container 1 After opening the closure lid 11, several tennis balls can be inserted into the container 1 (the container 1 is expediently dimensioned in such a way that it receives four tennis balls after tennis balls are sold predominantly in pressure cans with four balls content).
  • the piston pump 2 is then operated with the pump handle 15.
  • the user holds the device on the pump housing 5, which forms a comfortable and safe handle. Since the pump handle 15 protrudes beyond the container 1 even in the inserted state, safe pumping without any risk of injury is guaranteed.
  • the sealing ring 25 is pressed into the narrowed upper part of the groove 28 and thereby the sliding gap on the circumference of the flange 26 is sealed. As a result, the air is forced out of the pump pressure chamber 20 through the check valve 21 into the interior of the container 1. During the upward movement of the piston 13, the sealing ring 25 is located in the lower, further part of the groove 28, so that air can flow into the pump pressure chamber 20.
  • the safety valve 18 provided in the piston 13 opens during a further pumping movement.
  • the valve body 30 rises from the valve seat 32 and allows air to flow out of the pump pressure chamber 20 via the air passage opening 33 and the longitudinal channels 17 of the piston rod 14 to the outside. The resulting noise indicates to the user that the optimum pressure for storing the tennis balls has been reached.
  • the device according to the invention is thus characterized by very convenient and user-friendly handling.
  • the pump housing 5 not only forms a secure grip during the pumping process and when inserting and removing the tennis balls, but also enables the device to be carried comfortably when going to and from the tennis court.
  • Storing the tennis balls under optimal pressure avoids e.g. after the first opening of pressure-packed tennis balls or after a long storage period of tennis balls, the otherwise inevitable loss of quality, since the air or gas in the tennis ball diffuses through the pores of the rubber cover relatively quickly (even without having played with the balls).
  • the diffusion of air or gas from the tennis balls is avoided and the tennis balls maintain constant, perfect playability.
  • This enables a constant jumping behavior of the tennis balls and thus an undisturbed stroke coordination.
  • the actual lifespan of tennis balls is considerably increased, especially for tennis players who do not play very often.
  • the tennis arm of the players due to the constant optimal playability of the tennis balls.
  • the design of the device also has significant advantages with regard to manufacture, assembly and maintenance.
  • the safety valve 18 is easily accessible after loosening the screw cap 16 and pulling out the piston rod 14.
  • the check valve 21 can be checked if necessary by simply unscrewing the bottom 12 and replaced if necessary.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Packages (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
EP89909549A 1988-08-25 1989-08-23 Vorrichtung zur aufbewahrung von tennisbällen Expired - Lifetime EP0400105B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89909549T ATE73680T1 (de) 1988-08-25 1989-08-23 Vorrichtung zur aufbewahrung von tennisbaellen.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE8811383U 1988-08-25
EP88113833 1988-08-25
CA000615392A CA1328094C (en) 1988-08-25 1989-09-29 Device for storing tennis balls

Publications (2)

Publication Number Publication Date
EP0400105A1 EP0400105A1 (de) 1990-12-05
EP0400105B1 true EP0400105B1 (de) 1992-03-18

Family

ID=25673213

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89909549A Expired - Lifetime EP0400105B1 (de) 1988-08-25 1989-08-23 Vorrichtung zur aufbewahrung von tennisbällen

Country Status (6)

Country Link
US (1) US5014848A (OSRAM)
EP (1) EP0400105B1 (OSRAM)
JP (1) JPH02503644A (OSRAM)
AU (1) AU614416B2 (OSRAM)
CA (1) CA1328094C (OSRAM)
WO (1) WO1990001973A1 (OSRAM)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4212419C2 (de) * 1992-04-14 1994-03-24 Peter Eska Behälter zum Regenerieren und Lagern von Tennisbällen unter Gasüberdruck
DE4342884A1 (de) * 1993-12-16 1995-06-22 Ralf Boettcher Überdruckbox für Tennisbälle
NL1016421C2 (nl) * 2000-10-17 2002-04-18 Vacu Vin Innovations Ltd Pomp met drukindicatiemiddelen.
US20120291914A1 (en) * 2007-06-19 2012-11-22 Dirst William F Apparatus for recharging pressurized balls and method
US7588145B1 (en) 2008-09-06 2009-09-15 Tamas Marius Apparatus and method for extending the life of athletic balls
US10981045B1 (en) 2020-06-06 2021-04-20 Rahul Anand Tennis ball pod

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3415357A (en) * 1967-12-26 1968-12-10 William J. Van Natter Self-contained tennis ball storage container and pressurizing device
US3853222A (en) * 1973-06-21 1974-12-10 Matchpoint Ind Inc Pressurization apparatus
US3888347A (en) * 1973-08-06 1975-06-10 Thomas Rollin Kramer Inflated containers for fluid pressurized balls
US4019629A (en) * 1975-02-13 1977-04-26 Dubner Robert B Pressurized tennis ball container
US4362095A (en) * 1981-03-02 1982-12-07 Phyllis A. Wheatley Storage container for ground coffee
US4428478A (en) * 1982-07-07 1984-01-31 Hoffman Allan C Self-limiting pump
DE8702822U1 (de) * 1987-02-25 1987-04-23 Neatby, John Russell, 5000 Köln Vorrichtung zum Aufheben von Tennisbällen

Also Published As

Publication number Publication date
AU614416B2 (en) 1991-08-29
US5014848A (en) 1991-05-14
CA1328094C (en) 1994-03-29
EP0400105A1 (de) 1990-12-05
AU4077789A (en) 1990-03-23
JPH02503644A (ja) 1990-11-01
WO1990001973A1 (de) 1990-03-08
JPH0352991B2 (OSRAM) 1991-08-13

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