Lawrence P Irwin

US Patent:

7761948, Jul 27, 2010

Filed:

Aug 7, 2007

Appl. No.:

11/890961

Inventors:

Lawrence F. Irwin - San Fernando CA, US

International Classification:

B08B 9/04
B08B 9/043

US Classification:

15104095, 1510433

Abstract:

A waste line clean-out apparatus in which a video camera is positioned proximate the outboard end of an elongated flexible coil spring assembly and is interconnected with a remotely located viewing monitor by means of various operating cables, including a fiber optic signal transmitting cable. The apparatus includes a pull cable that extends interiorly of the spring assembly for protecting the fiber optic signal transmitting cable and the various companion operating cables from undue stress during the waste line clean-out operation.

US Patent:

45425434, Sep 24, 1985

Filed:

Apr 20, 1984

Appl. No.:

6/602412

Inventors:

Lawrence F. Irwin - Sylmar CA

International Classification:

E03D 1100

US Classification:

4255

Abstract:

A mechanically operated impact tool adapted for use in clearing blockages in clogged waste lines. The tool embodies a pair of telescopically movable sleeves which house an anvil and a reciprocating piston. A coil spring functions to drive the piston against the anvil when one of the sleeves is moved telescopically over the other a predetermined distance.

US Patent:

44968116, Jan 29, 1985

Filed:

Apr 15, 1983

Appl. No.:

6/485263

Inventors:

Lawrence F. Irwin - Sylmar CA

International Classification:

H01H 314

US Classification:

200 865

Abstract:

A safety enclosure for enclosing a foot operated switch so as to prevent accidental actuation of the switch. The enclosure is open at the top and includes upstanding walls within which the switch is mounted. One of the walls is pivotally movable by a positive act of the operator against the urging of a closure spring from an upstanding position to a lowered position to enable the operator to bring his foot into pressural operating engagement with the switch.

US Patent:

45084688, Apr 2, 1985

Filed:

Sep 28, 1982

Appl. No.:

6/425671

Inventors:

Lawrence F. Irwin - Sylmar CA

International Classification:

F16B 1220

US Classification:

403328

Abstract:

An improved coupling for lengths of coiled springs, flexible rods and the like comprising interfitting inner and outer members and latching elements carried by the inner member and received in openings in the outer member. The latching elements are uniquely configured so as to be operable with one hand leaving the second hand free to grasp one of the connected springs or rods.

US Patent:

50041193, Apr 2, 1991

Filed:

Jul 31, 1989

Appl. No.:

7/386633

Inventors:

Lawrence F. Irwin - Sylmar CA

Assignee:

Augerscope, Inc. - Sylmar CA

International Classification:

B65D 4500

US Classification:

220247

Abstract:

An apparatus for temporarily sealing a vent or overflow aperture provided in the upper portion of a fixture such as a wash basin, sink, bathtub or bidet so that a pneumatic or hydraulic type sewer cleanout device can be used to clear a blockage located in a sewer line downstream of the fixture by generating fluid pressure within the sewer line intermediate the blockage and the main water drain of the fixture.

US Patent:

43356320, Jun 22, 1982

Filed:

Oct 23, 1980

Appl. No.:

6/199746

Inventors:

Lawrence F. Irwin - Sylmar CA
Robert Millray - Saugus CA

Assignee:

Augerscope, Inc. - Sylmar CA

International Classification:

B25B 2308

US Classification:

81446

Abstract:

An internal pipe wrench adapted to engage the inner walls of a pipe for applying torque thereto. The wrench comprises a rotatable mandrel which is generally triangular in cross-section and three cooperating gripping jaws movable into gripping engagement with the pipe upon rotation of the mandrel. The gripping jaws are retained in operable proximity with the mandrel by means of a yieldably resilient rubber or plastic material and are uniformly configured so that upon rotation of the mandrel in either direction, the leading edge of the gripping jaws will move into positive gripping engagement with the inner walls of the pipe.

US Patent:

61424609, Nov 7, 2000

Filed:

Jun 17, 1998

Appl. No.:

9/099012

Inventors:

Lawrence F. Irwin - Sylmar CA

International Classification:

B23Q 318

US Classification:

269 60

Abstract:

A method and apparatus for installing and removing sink mounted garbage disposers in a manner which safeguards against injury of the installer. The apparatus of the invention is compact, lightweight and easy to position within the confines of a kitchen cabinet at a location directly beneath the sink mounting assembly to which the garbage disposer is interconnected. The apparatus has both fine and course elevation adjustment capabilities thereby making it easy to use in both the installation and removal of sink mounted garbage disposers of wide variety of sizes and shapes.

US Patent:

46867325, Aug 18, 1987

Filed:

Jan 6, 1986

Appl. No.:

6/816328

Inventors:

Lawrence F. Irwin - Sylmar CA

International Classification:

B08B 902

US Classification:

151043SN

Abstract:

A feed control device for use in conjunction with plumbing tools of the type used for cleaning and removing obstructions from waste lines in which an elongated coiled spring wire, or plumber's snake, is advanced through the pipe and rotated. The feed control device includes a novel snake feeding mechanism movable into and out of engagement with the snake and includes a biasing means for yieldably urging removably mounted feed rollers, which form a part of the feeding mechanism, into driving engagement with the snake. A unique feature of the invention resides in the design of the feed roller holder assembly which permits the selection of rollers having either smooth peripheral surfaces, or, alternatively, surfaces having helical grooved formed therein. When the smooth rollers are used the rollers can be rotated within the holder assembly so that the snake can be driven forwardly or in reverse. With this arrangement the device can be used for a wide variety of sewer cleanout operations for cleaning out various types of blockages.