Steven E Schaefer
Engineers at Medallion Dr, Cincinnati, OH

License number
Colorado 23853
Issued Date
Nov 22, 1985
Renew Date
Dec 1, 2003
Expiration Date
Nov 30, 2005
Type
Professional Engineer
Address
Address
10411 Medallion Dr, Cincinnati, OH 45241

Professional information

Steven Schaefer Photo 1

Air Circulation Board For Cavity Wall Construction

US Patent:
7421826, Sep 9, 2008
Filed:
Apr 17, 2003
Appl. No.:
10/417761
Inventors:
P. Michael Collins - Cincinnati OH, US
Steven E. Schaefer - Cincinnati OH, US
Assignee:
PACC Systems I.P., LLC - Cincinnati OH
International Classification:
E04B 1/70
US Classification:
523021, 52209, 52378, 52379, 52513, 52408, 52410, 521695, 523023
Abstract:
A corrugated board is secured to the inner wall of a cavity wall construction to establish a defined spacing between the inner and outer walls and prevent excess mortar from bridging to the inner wall. The corrugated board has a series of spaced channels, furrows or grooves into which an anchor projects into the studs of the inner wall to secure the outer wall. The corrugated board is installed prior to the construction of the outer wall and establishes a minimum spacing or gap between the walls based upon the thickness of the board. The outer wall is constructed immediately adjacent to the outer face of the corrugated board. The grooves or channels of the corrugated board create a chamber for vapor and air circulation. The board eliminates bridging by the mortar and provides an air conduit to exhaust even the minimal amounts of vapor that will occur in the cavity.


Steven Schaefer Photo 2

Segmented Joint For Masonry Construction

US Patent:
8011145, Sep 6, 2011
Filed:
May 29, 2007
Appl. No.:
11/754633
Inventors:
P. Michael Collins - Cincinnati OH, US
Steven E. Schaefer - Cincinnati OH, US
Assignee:
PACC Systems I.P., LLC - Cincinnati OH
International Classification:
E06B 9/52, E06B 5/20
US Classification:
52214, 5220453, 5239605, 52393, 523961, 52 98, 52513
Abstract:
A joint device is installed between adjacent components during construction to provide a proper transition between the components. The joint device has a generally L-shaped configuration with a first leg of the device that may be mounted to the outer face of the inner wall of a cavity wall construction and in the cavity between the spaced walls. The second leg projects generally perpendicularly from the first leg and from the inner wall toward the outer wall adjacent the bricks at which the movement joint is located. The second leg of the joint includes a series of segments in which a terminal end portion of the second leg is joined to a remainder thereof by frangible connections or perforated joints. After the joint device is installed on the inner wall and the outer wall is constructed, the terminal end portion of the second leg is removed by being torn along the appropriate frangible joint depending upon the spacing between the components.


Steven Schaefer Photo 3

Masonry Tie For Cavity Wall Construction

US Patent:
2004023, Nov 25, 2004
Filed:
May 14, 2004
Appl. No.:
10/846081
Inventors:
P. Collins - Cincinnati OH, US
Steven Schaefer - Cincinnati OH, US
International Classification:
E04C003/30
US Classification:
052/506010
Abstract:
A masonry wall tie for anchoring a masonry wall to an inner wall of a cavity wall construction includes a base channel member having a pair of spaced generally parallel side walls and an anchor clip configured for engaging the base channel member. A slot is formed in each of the channel side walls. Each slot has an outwardly-extending lip bordering the slot. The base member is fastened to the outer surface of the inner wall. The anchor clip has a pair of oppositely projecting arms, each of which is seated in one of the slots in the side walls. The length of the slots determines the height adjustment of the anchor clip when engaged with the base channel member. The anchor clip spans the gap between the two walls in the cavity wall construction and the brace of the clip is seated within the mortar joint between the bricks or other masonry units on the outer wall.


Steven Schaefer Photo 4

Masonry Tie For Cavity Wall Construction

US Patent:
D563215, Mar 4, 2008
Filed:
Apr 23, 2007
Appl. No.:
29/279181
Inventors:
P. Michael Collins - Cincinnati OH, US
Steven E. Schaefer - Cincinnati OH, US
Assignee:
PACC Systems I.P., LLC - Cincinnati OH
International Classification:
0808
US Classification:
D 8384


Steven Schaefer Photo 5

Masonry Tie For Cavity Wall Construction

US Patent:
D580260, Nov 11, 2008
Filed:
Jan 15, 2008
Appl. No.:
29/302327
Inventors:
P. Michael Collins - Cincinnati OH, US
Steven E. Schaefer - Cincinnati OH, US
Assignee:
PACC Systems I.P., LLC - Cincinnati OH
International Classification:
0808
US Classification:
D 8382


Steven Schaefer Photo 6

Flashing And Weep Apparatus For Masonry Wall Window And Door Installations

US Patent:
2003023, Dec 18, 2003
Filed:
May 22, 2003
Appl. No.:
10/443641
Inventors:
P. Collins - Cincinnati OH, US
Steven Schaefer - Cincinnati OH, US
International Classification:
E06B007/14
US Classification:
052/209000, 052/302100
Abstract:
A flashing and weep apparatus allows for simple installation and accurate placement windows and doors in cavity wall construction. In a first embodiment, the flashing and weep apparatus is a two-panel extrusion that has a flashing panel that acts as a non-porous support for the masonry veneer. This embodiment also includes a second panel which is joined at a generally right angle to the first panel to be juxtaposed against the outer face of the inner wall in the cavity wall construction. Weep channels are formed between the two panels and allow for the drainage and dissipation of water and other moisture in the cavity wall system. In a second embodiment, membrane is initially attached to and draped along the lower portion of the inner wall immediately above the sill or lintel. The membrane extends across the cavity spacing between the walls to underlie the masonry components forming the outer veneer. Weep channels on the membrane communicate and transmit water and moisture from the cavity between the walls to the exterior of the veneer. The weep channels are positioned at the joint between adjacent bricks. The membrane extending beyond the mortar joint at the masonry veneer is trimmed during the installation process so as not to extend beyond the outer veneer wall while still providing an easily installed and implemented flash and weep system.