GB1327077A - Rotary piston machines - Google Patents

Rotary piston machines

Info

Publication number
GB1327077A
GB1327077A GB4665370*A GB4665370A GB1327077A GB 1327077 A GB1327077 A GB 1327077A GB 4665370 A GB4665370 A GB 4665370A GB 1327077 A GB1327077 A GB 1327077A
Authority
GB
United Kingdom
Prior art keywords
piston
extensions
wedge
convexly curved
curved surface
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
Application number
GB4665370*A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1327077A publication Critical patent/GB1327077A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C19/00—Sealing arrangements in rotary-piston machines or engines
    • F01C19/02—Radially-movable sealings for working fluids
    • F01C19/04—Radially-movable sealings for working fluids of rigid material

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sealing Devices (AREA)
  • Braking Arrangements (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

1327077 Rotary-piston machines ROBERT BOSCH GmbH 1 Oct 1970 [2 Oct 1969] 46653/70 Heading F1F A radial sealing strip in a rotary-piston machine having a piston with n sides planetarily rotatable within a housing chamber defined by an epitrochoidal surface having n-1 lobes, have a convexly curved surface 6 facing the chamber surface 2 which blends into the peripheral surface 7 of the piston 1, extensions 8 wedge-shaped in cross-section on that side of the strip facing the piston centre mounted in correspondingly configured grooves 10 at the piston corners and one or more radially directed bores 9 extending from the convexly curved surface to between the wedge-shaped extensions 8. There may be more than two wedgeshaped extensions with a bore or bores extending from the convexly curved surface to between each adjacent pair of wedge-shaped extensions. With the invention, the load acting on the base of the strip from the higher pressure working chamber 4 is less than would be the case with parallel-sided extensions with consequential less sealing force acting on the working chamber surface and less wear.
GB4665370*A 1969-10-02 1970-01-01 Rotary piston machines Expired GB1327077A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691949695 DE1949695A1 (en) 1969-10-02 1969-10-02 Radial seal with controlled partial admission for a rotary piston machine

Publications (1)

Publication Number Publication Date
GB1327077A true GB1327077A (en) 1973-08-15

Family

ID=5747120

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4665370*A Expired GB1327077A (en) 1969-10-02 1970-01-01 Rotary piston machines

Country Status (5)

Country Link
US (1) US3655304A (en)
CH (1) CH508804A (en)
DE (1) DE1949695A1 (en)
FR (1) FR2064895A5 (en)
GB (1) GB1327077A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3758243A (en) * 1972-04-24 1973-09-11 Gen Motors Corp Rotary machine apex seal
US3994636A (en) * 1975-03-24 1976-11-30 Arthur D. Little, Inc. Axial compliance means with radial sealing for scroll-type apparatus
WO1979000919A1 (en) * 1978-04-12 1979-11-15 Caterpillar Tractor Co Tapered seal for engines or the like

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1151413B (en) * 1960-08-29 1963-07-11 Nsu Motorenwerke Ag Sealing system for rotary piston machines
US3120921A (en) * 1961-07-25 1964-02-11 Royalty Holding Corp Automatically adjusting and compensating seal means for rotary machines
US3323498A (en) * 1965-06-02 1967-06-06 Ustav Pro Vyzkum Motorovych Vo Rotary internal combustion engine

Also Published As

Publication number Publication date
DE1949695A1 (en) 1971-04-08
CH508804A (en) 1971-06-15
US3655304A (en) 1972-04-11
FR2064895A5 (en) 1971-07-23

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees