Derald H. Kraft

Person

Canton, OH, US

People

Patents Grantslast 30 patents

Information Patent Grant
Manufacture of poly-V sheet metal pulleys and product
- Patent number 4,551,122
- Issue date Nov 5, 1985
- Dyneer Corporation
- Derald H. Kraft
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Arrangement for tensioning the drive belt for vehicle accessories
- Patent number 4,355,991
- Issue date Oct 26, 1982
- Dyneer Corporation
- Derald H. Kraft
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Press construction
- Patent number 4,321,819
- Issue date Mar 30, 1982
- Dyneer Corporation
- Derald H. Kraft
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Hydraulic belt tensioner construction
- Patent number 4,299,583
- Issue date Nov 10, 1981
- Dyneer Corporation
- Derald H. Kraft
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Apparatus for hydraulically forming sheet metal pulleys
- Patent number 4,289,007
- Issue date Sep 15, 1981
- Dyneer Corporation
- Derald H. Kraft
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Mechanical belt tensioner construction
- Patent number 4,285,676
- Issue date Aug 25, 1981
- Dyneer Corporation
- Derald H. Kraft
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Hydraulic belt tensioner construction
- Patent number 4,283,182
- Issue date Aug 11, 1981
- Dyneer Corporation
- Derald H. Kraft
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Hydraulic belt tensioner construction
- Patent number 4,277,240
- Issue date Jul 7, 1981
- Dyneer Corporation
- Derald H. Kraft
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Hydraulic belt tensioner construction
- Patent number 4,276,038
- Issue date Jun 30, 1981
- Dyneer Corporation
- Derald H. Kraft
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Belt tensioner construction
- Patent number 4,270,906
- Issue date Jun 2, 1981
- Dyneer Corporation
- Derald H. Kraft
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Spun V-grooved sheet metal pulley with thick hub wall integral with...
- Patent number 4,109,542
- Issue date Aug 29, 1978
- Aspro, Inc.
- Derald H. Kraft
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method of making a sintered pulley hub construction
- Patent number 4,090,284
- Issue date May 23, 1978
- Aspro, Inc.
- Derald H. Kraft
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Sintered pulley hub construction and method of making same
- Patent number 4,056,014
- Issue date Nov 1, 1977
- Aspro, Inc.
- Derald H. Kraft
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method of roller spinning cup-shaped metal blanks and roller constr...
- Patent number 4,055,976
- Issue date Nov 1, 1977
- Aspro, Inc.
- Derald H. Kraft
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Clutch housing and bearing assembly and method of making the same
- Patent number 4,056,291
- Issue date Nov 1, 1977
- Aspro, Inc.
- Derald H. Kraft
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Multi V-grooved pulley structure and method of making same
- Patent number 4,050,321
- Issue date Sep 27, 1977
- Aspro, Inc.
- Derald H. Kraft
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method of making V-grooved sheet metal pulleys
- Patent number 4,041,746
- Issue date Aug 16, 1977
- Aspro, Inc.
- Derald H. Kraft
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method of making clutch housing and bearing assembly
- Patent number 4,016,642
- Issue date Apr 12, 1977
- Aspro, Inc.
- Derald H. Kraft
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method of making spun V-grooved sheet metal pulleys
- Patent number 3,995,474
- Issue date Dec 7, 1976
- Aspro, Incorporated
- Derald H. Kraft
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method of roller spinning cup-shaped metal blanks
- Patent number 3,991,598
- Issue date Nov 16, 1976
- Aspro, Incorporated
- Derald H. Kraft
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Derald H. Kraft

Person

Patents Grantslast 30 patents

Manufacture of poly-V sheet metal pulleys and product

Arrangement for tensioning the drive belt for vehicle accessories

Press construction

Hydraulic belt tensioner construction

Apparatus for hydraulically forming sheet metal pulleys

Mechanical belt tensioner construction

Hydraulic belt tensioner construction

Hydraulic belt tensioner construction

Hydraulic belt tensioner construction

Belt tensioner construction

Spun V-grooved sheet metal pulley with thick hub wall integral with...

Method of making a sintered pulley hub construction

Sintered pulley hub construction and method of making same

Method of roller spinning cup-shaped metal blanks and roller constr...

Clutch housing and bearing assembly and method of making the same

Multi V-grooved pulley structure and method of making same

Method of making V-grooved sheet metal pulleys

Method of making clutch housing and bearing assembly

Method of making spun V-grooved sheet metal pulleys

Method of roller spinning cup-shaped metal blanks