Frank Calandra JR.

Person

Pittsburgh, PA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Flange nut for mine roof bolt
- Patent number 6,619,888
- Issue date Sep 16, 2003
- Jennmar Corporation
- Frank Calandra
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Three-prong shell
- Patent number 6,599,059
- Issue date Jul 29, 2003
- Jennmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Grant
Cable bolt head
- Patent number 6,322,290
- Issue date Nov 27, 2001
- Jennmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Grant
Channel and bearing plate assembly
- Patent number 6,146,056
- Issue date Nov 14, 2000
- Jennmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Grant
Cable bolt head
- Patent number 6,056,482
- Issue date May 2, 2000
- Jennmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Grant
Combination bolt system
- Patent number 5,954,455
- Issue date Sep 21, 1999
- Jennmar Corporation
- Jack R. Eaton
- E21 - EARTH DRILLING MINING
Information Patent Grant
Tensionable cable bolt with mixing assembly
- Patent number 5,919,006
- Issue date Jul 6, 1999
- Jennmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Grant
Rebar with vanadium alloy
- Patent number 5,851,481
- Issue date Dec 22, 1998
- Jennmar Corporation
- John C. Stankus
- E21 - EARTH DRILLING MINING
Information Patent Grant
Cable bolt head
- Patent number 5,829,922
- Issue date Nov 3, 1998
- Jenmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Grant
Bearing plate
- Patent number RE35902
- Issue date Sep 22, 1998
- Jennmar Corporation
- Frank Calandra
- 405 - Hydraulic and earth engineering
Information Patent Grant
Combination cable bolt system
- Patent number 5,785,463
- Issue date Jul 28, 1998
- Jennmar Corporation
- Jack R. Eaton
- E21 - EARTH DRILLING MINING
Information Patent Grant
Multi-piece, split bail expansion anchor
- Patent number 5,762,451
- Issue date Jun 9, 1998
- Jennmar Corporation
- John C. Stankus
- E21 - EARTH DRILLING MINING
Information Patent Grant
Cable bolt and method of use in supporting a rock formation
- Patent number 5,511,909
- Issue date Apr 30, 1996
- Jennmar Corporation
- Frank Calandra
- E04 - BUILDING
Information Patent Grant
Method for fabricating a truss member for a mine roof support
- Patent number 5,450,663
- Issue date Sep 19, 1995
- Jennmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Grant
Bearing plate with a continuous elliptical embossment
- Patent number 5,445,477
- Issue date Aug 29, 1995
- Jennmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Grant
Process of making a rod for use in reinforcing an underground rock...
- Patent number 5,437,830
- Issue date Aug 1, 1995
- Jenmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Grant
Longwall mining roof control system
- Patent number 5,425,601
- Issue date Jun 20, 1995
- Jennmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Grant
Bearing plate
- Patent number 5,385,433
- Issue date Jan 31, 1995
- Jennmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Grant
Non-metallic reinforcing rod and method of use in supporting a rock...
- Patent number 5,314,268
- Issue date May 24, 1994
- Jennmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and apparatus for supporting a mine roof
- Patent number 5,302,056
- Issue date Apr 12, 1994
- Jennmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Grant
Bearing plate
- Patent number 5,292,209
- Issue date Mar 8, 1994
- Jennmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Grant
Expansion assembly
- Patent number 5,244,314
- Issue date Sep 14, 1993
- Jennmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Grant
Expansion shell assembly
- Patent number 5,184,923
- Issue date Feb 9, 1993
- Jennmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Grant
Expansion assembly for mine roof bolts
- Patent number 5,078,547
- Issue date Jan 7, 1992
- Jennmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Grant
Delay stopper for a mine roof anchor and method of manufacture thereof
- Patent number 5,064,312
- Issue date Nov 12, 1991
- Jennmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Grant
Expansion assembly for mine roof bolts utilized in small diameter b...
- Patent number 4,969,778
- Issue date Nov 13, 1990
- Jennmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Grant
Mine roof support utilizing roof anchors having eye-bolt heads
- Patent number 4,934,873
- Issue date Jun 19, 1990
- Jennmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Grant
Expansion assembly for mine roof bolts utilized in small diameter b...
- Patent number 4,904,123
- Issue date Feb 27, 1990
- Jennmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Grant
Roof bolt system
- Patent number 4,861,197
- Issue date Aug 29, 1989
- Jennmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Grant
Bendable roof bolt without notch
- Patent number 4,784,531
- Issue date Nov 15, 1988
- Jennmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Square embossed roof and rib plate
- Publication number 20040018062
- Publication date Jan 29, 2004
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Application
Three-prong shell
- Publication number 20020025230
- Publication date Feb 28, 2002
- Jennmar Corporation
- Frank Calandra
- E21 - EARTH DRILLING MINING
Information Patent Application
Flange nut
- Publication number 20010026746
- Publication date Oct 4, 2001
- Frank Calandra
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Frank Calandra JR.

Person

Patents Grantslast 30 patents

Flange nut for mine roof bolt

Three-prong shell

Cable bolt head

Channel and bearing plate assembly

Cable bolt head

Combination bolt system

Tensionable cable bolt with mixing assembly

Rebar with vanadium alloy

Cable bolt head

Bearing plate

Combination cable bolt system

Multi-piece, split bail expansion anchor

Cable bolt and method of use in supporting a rock formation

Method for fabricating a truss member for a mine roof support

Bearing plate with a continuous elliptical embossment

Process of making a rod for use in reinforcing an underground rock...

Longwall mining roof control system

Bearing plate

Non-metallic reinforcing rod and method of use in supporting a rock...

Method and apparatus for supporting a mine roof

Bearing plate

Expansion assembly

Expansion shell assembly

Expansion assembly for mine roof bolts

Delay stopper for a mine roof anchor and method of manufacture thereof

Expansion assembly for mine roof bolts utilized in small diameter b...

Mine roof support utilizing roof anchors having eye-bolt heads

Expansion assembly for mine roof bolts utilized in small diameter b...

Roof bolt system

Bendable roof bolt without notch

Patents Applicationslast 30 patents

Square embossed roof and rib plate

Three-prong shell

Flange nut