US3916866A - Engine having reciprocating piston and rotary piston - Google Patents
Engine having reciprocating piston and rotary piston Download PDFInfo
- Publication number
- US3916866A US3916866A US296547A US29654772A US3916866A US 3916866 A US3916866 A US 3916866A US 296547 A US296547 A US 296547A US 29654772 A US29654772 A US 29654772A US 3916866 A US3916866 A US 3916866A
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- Prior art keywords
- piston
- piston rod
- cylinder
- engine according
- rod
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/26—Cylinder heads having cooling means
- F02F1/36—Cylinder heads having cooling means for liquid cooling
- F02F1/365—Cylinder heads having cooling means for liquid cooling the cylinder heads being of side valve type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F01B3/0079—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having pistons with rotary and reciprocating motion, i.e. spinning pistons
Definitions
- the piston and rotary piston rod assembly of the present invention has been devised wherein a secondary piston is secured to the lower surface of the main piston and a spline connection is provided between the secondary piston and the cylinder wall.
- a secondary piston is secured to the lower surface of the main piston and a spline connection is provided between the secondary piston and the cylinder wall.
- FIG. I is a perspective view of a four cylinder engine employing the piston and rotary shaft assembly of the present invention
- FIG. 2 is a sectional view taken along line 2-2 of FIG. 1;
- FIG. 3 is a view taken along line 3-3 of FIG. 2;
- FIG. 4 is a view taken along line 4-4 of FIG. 2;
- FIG. 5 is a view taken along line 5-5 of FIG. 4;
- FIG. 6 is a side elevational view of a portion of the piston rod.
- FIG. 7 is an enlarged, fragmentary perspective view of the piston rod.
- a four-cylinder, internal combustion engine 1 employing a piston and rod assembly 2 of the type wherein the piston 3 reciprocates relative to the piston rod 4 to impart a rotary motion thereto which, in turn, drives a drive shaft 5 via gear assembly 6.
- Rotary motion is imparted to the piston rod by a spring biased detent 7 carried by the piston and engaging a spiral groove 4a formed in the piston rod. While only one spring biased detent is shown, a plurality of radially extending detents could be employed.
- a spline connection 8 is provided between the piston 3 and cylinder wall 9.
- the spline connection comprises a plurality of circumferentially spaced, longitudinally extending keys 8a secured to the cylinder wall and slidably received in similarly disposed keyways 8b formed in a secondary piston 30 mounted on the lower surface of the main piston 3.
- the lower portion of the main piston is also provided with keyways which engage the keys as the piston reaches the bottom dead center position of its stroke.
- piston and rod assembly together with the associated spline connection, have been shown employed in an internal combustion engine, it will be appreciated by those skilled in the art that the particular piston, rod and spline connection could be employed in other types of motors or engines such as hydraulic, pneumatic or steam wherein the drive is obtained by the piston reciprocating on the rotating piston rod.
- One stroke of the piston 3 is designed to turn the drive shaft from one revolution to any desired number of revolutions depending upon the pitch of the spiral groove formed on the piston rod and the type of transmission gears.
- the piston means comprises a main piston and a smaller secondary piston secured to the lower face of the main piston, said spline connection extending between the secondary piston and the cylinder.
- the deway'is'pr'ovided m the loyer portion o f t'h'emain piston tent means comprises at least one radially extending, which engages the ky'as'the piston reaches the bottom spring biased pin. dead center position of its stroke.
Abstract
An engine having a reciprocating piston and rotary piston rod wherein, the piston rod is provided with a spiral groove for receiving a detent carried by the piston, a spline connection being provided between the piston and the cylinder wall to prevent rotation of the piston.
Description
Umted States Patent 11 1 1 1 3,916,866 Rossi 1 Nov. 4, 1975 ENGINE HAVING RECIPROCATING 1,723,100 8/1929 Voorhies 123/197 R ux P ST AND ROTARY PISTON 2,262,963 11/1941 Procissi 74/58 3,056,386 10/1962 Aarvold et al 92/33 lnventorl J p R9581, 2015 Cedar 3,255,806 6/1966 Meyer et al 92/33 x Scranton, Pa. 18505 3,388,603 6 1968 Clark 74/57 Filed: Oct. 1972 3,393,610 7/1968 Aarvold 92/33 PP 296,547 Primary Examiner-Charles J. Myhre 1 Assistant Examiner-William C. Anderson 52 US. (:1. 123/197 R; 123/197 AB; 123/197 A; Agent 03096; James 123/197 AC; 92/33 BY1e [51] Int. Cl. F02B 75/32 [58] Field of Search... 123/197 A, 197 AB, 197 AC, [57] ABSTRACT An engme havmg a reclprocatmg piston and rotary [56] References Cited piston rod wherein, the piston rod is provided with a splral groove for recelvlng a detent carried by the pis- UNITED STATES PATENTS ton, a spline connection being provided between the 855,256 5/1907 Morey 123/197 R X piston and the cylinder wall to prevent rotation of the 1,089,408 3/1914 Ganderton 123/58 C ox piston 1,537,724 5/1925 Zimmer 123/197 R UX 1,561,826 11/1925 Bremer 74/58 x 5 Claims, 7 Drawing Figures FUE L EXHAUST US. Patent Nov. 4, 1975 Sheet20f2 3,916,866
FIG. 4.
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BACKGROUND OFTHE'INMENTION Various engines have been proposed wherein the piston is slidably mounted on the piston rod so thatreciprocation of the piston on the piston rod imparts a rotary motion to the piston rod which is geared to the engine drive shaft. The piston is usually keyed to the piston rod in such a manner that a key or detent carried by the piston is received in a spiral groove formed on the piston rod. To prevent rotation of the piston relative to the piston rod, various types of guides have been proposed which usually extended through the piston. While this arrangement prevented rotation of the piston relative to the piston rod, the gas-tight integrity of the cylinder, on the combustion chamber side of the piston, was broken with the resultant loss of compression in the engine.
To overcome the above-noted disadvantage, the piston and rotary piston rod assembly of the present invention has been devised wherein a secondary piston is secured to the lower surface of the main piston and a spline connection is provided between the secondary piston and the cylinder wall. By this construction and arrangement, the piston is prevented from rotating during its reciprocatory movement relative to the piston rod while the gas-tight integrity of the cylinder is maintained.
BRIEF DESCRIPTION OF THE DRAWING:
FIG. I is a perspective view of a four cylinder engine employing the piston and rotary shaft assembly of the present invention;
FIG. 2 is a sectional view taken along line 2-2 of FIG. 1;
FIG. 3 is a view taken along line 3-3 of FIG. 2;
FIG. 4 is a view taken along line 4-4 of FIG. 2;
FIG. 5 is a view taken along line 5-5 of FIG. 4;
FIG. 6 is a side elevational view of a portion of the piston rod; and
FIG. 7 is an enlarged, fragmentary perspective view of the piston rod.
Referring to the drawings, and more particularly to FIGS. 1 and 2 thereof, a four-cylinder, internal combustion engine 1 is shown employing a piston and rod assembly 2 of the type wherein the piston 3 reciprocates relative to the piston rod 4 to impart a rotary motion thereto which, in turn, drives a drive shaft 5 via gear assembly 6. Rotary motion is imparted to the piston rod by a spring biased detent 7 carried by the piston and engaging a spiral groove 4a formed in the piston rod. While only one spring biased detent is shown, a plurality of radially extending detents could be employed.
In order to prevent rotation of the piston during its reciprocatory movement on the piston rod, a spline connection 8 is provided between the piston 3 and cylinder wall 9. As will be seen more clearly in FIGS. 3 and 4, the spline connection comprises a plurality of circumferentially spaced, longitudinally extending keys 8a secured to the cylinder wall and slidably received in similarly disposed keyways 8b formed in a secondary piston 30 mounted on the lower surface of the main piston 3. The lower portion of the main piston is also provided with keyways which engage the keys as the piston reaches the bottom dead center position of its stroke.
From the construction and arrangement of the spline connection si between the piston and the cylinder, the rotation of the piston relative to the piston rod is prevented whilethe gas-tight integrity of the cylinder on the combustion chamber side of the piston is not compromised.- a
While, for purposes of illustration, the piston and rod assemblytogether with the associated spline connection, have been shown employed in an internal combustion engine, it will be appreciated by those skilled in the art that the particular piston, rod and spline connection could be employed in other types of motors or engines such as hydraulic, pneumatic or steam wherein the drive is obtained by the piston reciprocating on the rotating piston rod.
It has been found that in rotary piston rod-type internal combustion engines vibrations, which are found in conventional internal combustion engines employing crank shafts, are eliminated together with the necessity for large crank cases. As will be seen in FIG. 4, the oil for the gears 6 is contained in a shallow pan 10 disposed beneath the cylinders and oil for the pistons is splashed into each cylinder through a spider 11 mounted on the end of the cylinder through which the rotary piston rod 4 extends.
One stroke of the piston 3 is designed to turn the drive shaft from one revolution to any desired number of revolutions depending upon the pitch of the spiral groove formed on the piston rod and the type of transmission gears.
It is to be understood that the form of the invention herewith shown and described is to be taken as a preferred example of the same, and that various changes in the shape, size and arrangement of parts may be resorted to, without departing from the spirit of the invention or scope of the subjoined claims.
I claim:
1. In an internal combustion engine of tye type employing reciprocating piston means slidably mounted on the head-end of a piston rod for imparting rotary movement to the piston rod, the improvement comprising, radially extending guide means extending between the piston means and the cylinder for preventing rotation of the piston during its reciprocatory movement on the piston rod, said guide means comprising at least one longitudinally extending key secured to the cylinder wall in proximity to only the bottom end thereof, and a keyway formed on the side wall of said piston means in proximity to only the bottom end thereof for receiving said key to thereby provide a spline connection between the piston means and the cylinder in proximity to only the bottom ends thereof, whereby rotation of the piston relative to the piston rod is prevented while the gas-tight integrity of the cylinder on the combustion side of the piston is maintained.
2. In an engine according to claim 1 wherein the piston means comprises a main piston and a smaller secondary piston secured to the lower face of the main piston, said spline connection extending between the secondary piston and the cylinder.
3. In an engine according to claim 2 wherein rotary motion is imparted to the piston rod by detent means carried by the piston means engaging a spiral groove formed on the piston rod, said detent means being carried by said secondary piston.
39163866 3 x 4 v 4. In an engine according to claim 3 wherein the deway'is'pr'ovided m the loyer portion o f t'h'emain piston tent means comprises at least one radially extending, which engages the ky'as'the piston reaches the bottom spring biased pin. dead center position of its stroke.
5. In an engine according to claim 2, wherein a key v
Claims (5)
1. In an internal combustion engine of tye type employing reciprocating piston means slidably mounted on the head-end of a piston rod for imparting rotary movement to the piston rod, the improvement comprising, radially extending guide means extending between the piston means and the cylinder for preventing rotation of the piston during its reciprocatory movement on the piston rod, said guide means comprising at least one longitudinally extending key secured to the cylinder wall in proximity to only the bottom end thereof, and a keyway formed on the side wall of said piston means in proximity to only the bottom end thereof for receiving said key to thereby provide a spline connection between the piston means and the cylinder in proximity to only the bottom ends thereof, whereby rotation of the piston relative to the piston rod is prevented while the gas-tight integrity of the cylinder on the combustion side of the piston is maintained.
2. In an engine according to claim 1 wherein the piston means comprises a main piston and a smaller secondary piston secured to the lower face of the main piston, said spline connection extending between the secondary piston and the cylinder.
3. In an engine according to claim 2 wherein rotary motion is imparted to the piston rod by detent means carried by the piston means engaging a spiral groove formed on the piston rod, said detent means being carried by said secondary piston.
4. In an engine according to claim 3 wherein the detent means comprises at least one radially extending, spring biased pin.
5. In an engine according to claim 2, wherein a keyway is provided in the lower portion of the main piston which engages the key as the piston reaches the bottom dead center position of its stroke.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US296547A US3916866A (en) | 1972-10-11 | 1972-10-11 | Engine having reciprocating piston and rotary piston |
Applications Claiming Priority (1)
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US296547A US3916866A (en) | 1972-10-11 | 1972-10-11 | Engine having reciprocating piston and rotary piston |
Publications (1)
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US3916866A true US3916866A (en) | 1975-11-04 |
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US296547A Expired - Lifetime US3916866A (en) | 1972-10-11 | 1972-10-11 | Engine having reciprocating piston and rotary piston |
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Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4363299A (en) * | 1980-06-09 | 1982-12-14 | Bristol Robert D | Crankless internal combustion engine |
US4462345A (en) * | 1981-07-13 | 1984-07-31 | Pulsar Corporation | Energy transfer device utilizing driveshaft having continuously variable inclined track |
US4465042A (en) * | 1980-06-09 | 1984-08-14 | Bristol Robert D | Crankless internal combustion engine |
US5040502A (en) * | 1990-06-27 | 1991-08-20 | Lassiter Will M | Crankless internal combustion engine |
US5081964A (en) * | 1990-06-27 | 1992-01-21 | Lassiter Will M | Crankless internal combustion engine |
US5934243A (en) * | 1998-03-26 | 1999-08-10 | Kopystanski; George | Drive mechanism for a reciprocating piston engine |
US6062187A (en) * | 1996-07-23 | 2000-05-16 | Pattakos; Manousos | Pulling piston engine |
US6199884B1 (en) | 1996-12-23 | 2001-03-13 | 7444353 Alberta Ltd. | Helical drive bicycle |
US6241565B1 (en) | 1996-12-23 | 2001-06-05 | Helixsphere Technologies, Inc. | Helical drive human powered boat |
US6328012B1 (en) | 2000-05-15 | 2001-12-11 | Michael L. Clements | Cylinder head and valve configuration |
US6601558B2 (en) | 2000-05-15 | 2003-08-05 | Michael L. Clements | Cylinder head configuration |
WO2004042212A1 (en) * | 2002-11-08 | 2004-05-21 | Carnu Ion | Movement transformer for internal combustion engine |
WO2004104376A1 (en) * | 2003-05-23 | 2004-12-02 | Attegro Inc. | An engine with drive ring |
US20070079791A1 (en) * | 2005-10-07 | 2007-04-12 | Bradley Raether | WaveTech engine |
US20080141801A1 (en) * | 2005-10-07 | 2008-06-19 | Wavetech Engines, Inc. | Systems and methods for facilitating conversion between reciprocating linear motion and rotational motion |
CN100458120C (en) * | 2003-09-08 | 2009-02-04 | 重庆大学 | Two stroke operation engine and its two stroke operation process |
GB2459025A (en) * | 2008-04-09 | 2009-10-14 | Daniel Lytton | Reciprocating-piston internal combustion engine with groove and follower instead of crank mechanism |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US855256A (en) * | 1906-12-17 | 1907-05-28 | Frank Morey | Internal-combustion engine. |
US1089408A (en) * | 1910-12-05 | 1914-03-10 | Conrad Mueller | Steam-engine. |
US1537724A (en) * | 1923-11-03 | 1925-05-12 | Meade L Zimmer | Internal-combustion engine |
US1561826A (en) * | 1922-12-18 | 1925-11-17 | Henry R Bremer | Compound-screw-power device |
US1723100A (en) * | 1921-10-07 | 1929-08-06 | Voorhees Gardner Tufts | Piston apparatus |
US2262963A (en) * | 1940-11-25 | 1941-11-18 | Procissi Peter | Fluid pressure engine |
US3056386A (en) * | 1957-08-03 | 1962-10-02 | Goetaverken Ab | Apparatus for articulating hingedly connected parts |
US3255806A (en) * | 1963-10-03 | 1966-06-14 | Flo Tork Inc | Fluid actuated structure |
US3388603A (en) * | 1965-12-06 | 1968-06-18 | Harry S. Clark | Engine |
US3393610A (en) * | 1965-04-27 | 1968-07-23 | Goetaverken Ab | Pressure medium operated torque actuator |
-
1972
- 1972-10-11 US US296547A patent/US3916866A/en not_active Expired - Lifetime
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US855256A (en) * | 1906-12-17 | 1907-05-28 | Frank Morey | Internal-combustion engine. |
US1089408A (en) * | 1910-12-05 | 1914-03-10 | Conrad Mueller | Steam-engine. |
US1723100A (en) * | 1921-10-07 | 1929-08-06 | Voorhees Gardner Tufts | Piston apparatus |
US1561826A (en) * | 1922-12-18 | 1925-11-17 | Henry R Bremer | Compound-screw-power device |
US1537724A (en) * | 1923-11-03 | 1925-05-12 | Meade L Zimmer | Internal-combustion engine |
US2262963A (en) * | 1940-11-25 | 1941-11-18 | Procissi Peter | Fluid pressure engine |
US3056386A (en) * | 1957-08-03 | 1962-10-02 | Goetaverken Ab | Apparatus for articulating hingedly connected parts |
US3255806A (en) * | 1963-10-03 | 1966-06-14 | Flo Tork Inc | Fluid actuated structure |
US3393610A (en) * | 1965-04-27 | 1968-07-23 | Goetaverken Ab | Pressure medium operated torque actuator |
US3388603A (en) * | 1965-12-06 | 1968-06-18 | Harry S. Clark | Engine |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4363299A (en) * | 1980-06-09 | 1982-12-14 | Bristol Robert D | Crankless internal combustion engine |
US4465042A (en) * | 1980-06-09 | 1984-08-14 | Bristol Robert D | Crankless internal combustion engine |
US4462345A (en) * | 1981-07-13 | 1984-07-31 | Pulsar Corporation | Energy transfer device utilizing driveshaft having continuously variable inclined track |
US5040502A (en) * | 1990-06-27 | 1991-08-20 | Lassiter Will M | Crankless internal combustion engine |
US5081964A (en) * | 1990-06-27 | 1992-01-21 | Lassiter Will M | Crankless internal combustion engine |
US6062187A (en) * | 1996-07-23 | 2000-05-16 | Pattakos; Manousos | Pulling piston engine |
US6199884B1 (en) | 1996-12-23 | 2001-03-13 | 7444353 Alberta Ltd. | Helical drive bicycle |
US6213487B1 (en) | 1996-12-23 | 2001-04-10 | 744353 Alberta Ltd. | Helical drive wheelchair |
US6241565B1 (en) | 1996-12-23 | 2001-06-05 | Helixsphere Technologies, Inc. | Helical drive human powered boat |
US5934243A (en) * | 1998-03-26 | 1999-08-10 | Kopystanski; George | Drive mechanism for a reciprocating piston engine |
US6328012B1 (en) | 2000-05-15 | 2001-12-11 | Michael L. Clements | Cylinder head and valve configuration |
US6601558B2 (en) | 2000-05-15 | 2003-08-05 | Michael L. Clements | Cylinder head configuration |
WO2004042212A1 (en) * | 2002-11-08 | 2004-05-21 | Carnu Ion | Movement transformer for internal combustion engine |
WO2004104376A1 (en) * | 2003-05-23 | 2004-12-02 | Attegro Inc. | An engine with drive ring |
CN100458120C (en) * | 2003-09-08 | 2009-02-04 | 重庆大学 | Two stroke operation engine and its two stroke operation process |
US20070079791A1 (en) * | 2005-10-07 | 2007-04-12 | Bradley Raether | WaveTech engine |
US7360521B2 (en) | 2005-10-07 | 2008-04-22 | Wavetech Engines, Inc. | Reciprocating engines |
US20080141801A1 (en) * | 2005-10-07 | 2008-06-19 | Wavetech Engines, Inc. | Systems and methods for facilitating conversion between reciprocating linear motion and rotational motion |
US8171812B2 (en) | 2005-10-07 | 2012-05-08 | Wavetech Engines, Inc. | Systems and methods for facilitating conversion between reciprocating linear motion and rotational motion |
GB2459025A (en) * | 2008-04-09 | 2009-10-14 | Daniel Lytton | Reciprocating-piston internal combustion engine with groove and follower instead of crank mechanism |
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