John E Grimmer, 9412793 Mariner Ct, Palm City, FL 34990

6695591, Feb 24, 2004

May 20, 2002

10/151536

John E. Grimmer - Trafalgar IN
Edward T. Ketcham - Greenwood IN

Grimmer Industries, Inc. - Franklin IN

F04B 2314

417203, 417205, 417243, 417253, 417252, 417266, 417313, 417362

A multi-stage compressor comprises a gas compressor, a centrifugal blower having an input connected with a gas source and an output connected with the gas compressor and providing a flow of compressed gas as a first stage of compression to the gas compressor, and a power source mechanically connected with and driving both the centrifugal blower and gas compressor to provide multi-stage compression of said gas.

4232997, Nov 11, 1980

Apr 27, 1978

5/900426

John E. Grimmer - Franklin IN
Robert L. Donahue - Indianapolis IN

Grimmer Schmidt Corp. - Franklin IN

F04B 4902

417 4

A method and apparatus for controlling a compressor is disclosed wherein both the compressed air output and the speed of the compressor are simultaneously adjusted in relation to compressed air demand over a wide range of air demands and in a way so as to use less input energy during below-peak demand and automatically return the compressor to an operating condition of minimum speed and minimum power input when there is no demand on the compressor. A reciprocating piston compressor with at least two, and typically more than two, compression chambers driven by a prime mover has a separate unloader device for each compression chamber. A control assembly is responsive to tank pressures indicating demand on the compressor with the movement of one movable control member simultaneously operating both a control valve adapted for successively operating each of the unloader devices one at a time and a speed regulating member for the prime mover. Receiver tank pressure is used to pressurize the unloader devices via the control valve and also move the movable control member to decrease compressor speed as each compression chamber is successively unloaded to not compress air and conversely to increase compressor speed and compressor output to restore tank pressure as demand increases. A pressure regulator adjusts the movable control member by sensing the tank pressure when a selected maximum tank pressure is reached and at that time the movable control member is automatically returned to a position to a minimum speed and minimum power input operating condition for the compressor air demand.

5400751, Mar 28, 1995

Nov 2, 1993

8/145816

John Grimmer - Trafalgar IN
Glen Juergensen - Greenwood IN

Hurricane Compressors - Franklin IN

F02B 7506

1231922

Monoblock engine/air compressor combinations, particularly those providing high pressure gas, experience problems in lubricating the piston pins connecting the compressor piston assemblies to the engine connecting rods. To alleviate this problem, additional weight is added to the compressor piston assemblies to force a load reversal at a determinable point in the piston cycle just after top dead center, thereby facilitating lubrication of the piston pins. An equation is disclosed for calculating the weight of the compressor piston as a function of the compressor gas pressure, geometry of the rotating components and engine speed. In another aspect of the invention, weight is added to the engine flywheel to balance an unbalanced compressor piston after the additional weight has been added. In another feature of the invention, a fluid system is provided in a natural gas powered engine in the monoblock combination, which system is designed to purge a volatile residual natural gas/air mixture collecting in the engine crankshaft through piston blow-by. A final feature concerns a supercharger system for providing supercharged air to the engine air intake manifold, which incorporates a plenum surrounding the fan and heat exchanger element of the engine cooling system.

5056601, Oct 15, 1991

Jun 21, 1990

7/541778

John E. Grimmer - Trafalgar IN

F01M 500
F01P 1108
F16D 3102

165 47

A compressor cooling system is provided for use with an engine PTO driven oil-flooded air compressor. The compressor cooling system includes an oil flow path from the compressor oil outlet, through an oil/coolant heat exchanger, and to the compressor oil inlet. The system further includes a coolant flow path in fluid communication with the engine cooling system with the oil/coolant heat exchanger interposed in the coolant flow path. Thus, coolant flowing through the engine cooling path also flows through the oil/coolant heat exchanger in heat transfer relation with the compressor oil flowing therethrough. The compressor coolant flow path is integrated into the engine cooling system so that flow through the compressor coolant flow path is not interrupted by operation of the thermostatic bypass valve in the engine cooling system.

4563132, Jan 7, 1986

Jan 28, 1985

6/695352

John E. Grimmer - Franklin IN

F04B 1700

417247

A compound turbocharger system for an engine/compressor unit is disclosed including a pair of conventional turbochargers including turbine components connected in series to convert exhaust gas energy from the engine cylinders into mechanical energy for driving a pair of impeller-type compressor components arranged to supply sufficient quantities of air to the intake manifold of the engine cylinders and to the intake manifold of the compressor cylinders. In one embodiment, the impeller-type compressor components are arranged in parallel. In a second embodiment, the impeller-type compressor components are arranged in series with the air supplied to the intake manifold of the engine cylinders being provided by the first compressor component. Smooth operation of the engine/compressor unit including substantial self-proportioning of the air boost to both the engine cylinders and compressor cylinders is assured by means of a compressor cylinder control means and engine throttle means for adjusting total compressed air output and engine rpm to the compressed air being utilized by enabling or disabling compressor cylinders one at a time in succession and by correspondingly adjusting the fuel flow to the engine cylinders. A compound turbocharger system is also disclosed for supplying compressed air to an air pressure operated conveyor.

4496291, Jan 29, 1985

Nov 13, 1981

6/321089

John E. Grimmer - Franklin IN

F04B 1700

417247

A compound turbocharger system (2, 2', 112) for an engine/compressor unit (4, 4') is disclosed including a pair of conventional turbochargers (14, 16, 111, 113) including turbine components (18, 22, 114, 116) connected in series to convert exhaust gas energy from the engine cylinders (6, 104, 106, 108, and 110) into mechanical energy for driving a pair of impeller-type compressor components (26, 28, 118 and 120) arranged to supply sufficient quantities of air to the intake manifold (42, 122) of the engine cylinders (6, 104, 106, 108, 110) and to the intake manifold (40, 124) of the compressor cylinders (8, 100, 102). In one embodiment, the impeller-type compressor components (26, 28) are arranged in parallel. In a second embodiment, the impeller-type compressor components (118, 120) are arranged in series with the air supplied to the intake manifold (122) of the engine cylinders (104, 106, 108, 110) being provided by the first compressor component (118). Smooth operation of the engine/compressor unit (4, 4' ) including substantial self-proportioning of the air boost to both the engine cylinders (6, 104, 106, 108, 110) and compressor cylinders (8, 100, 102) is assured by means of a compressor cylinder control means (50) and engine throttle means (51) for adjusting total compressed air output and engine rpm to the compressed air being utilized by enabling or disabling compressor cylinders (8, 100, 102) one at a time in succession and by correspondingly adjusting the fuel flow to the engine cylinders (6, 104, 106, 108, 110).