Harry E Lowe

US Patent:

20090041541, Feb 12, 2009

Filed:

Oct 3, 2007

Appl. No.:

11/906949

Inventors:

Harry E. Lowe - Schaumburg IL, US

International Classification:

E01F 9/06

US Classification:

404 14

Abstract:

A recessed snowplowable reflective pavement marker is mounted in a shallow elongated groove in a highway surface to expose the marker to headlights of oncoming motor vehicles. The marker has a plastic housing with a pocket for holding the reflector and two sidewalls that support positioning tabs to overlie the uncut pavement. These tabs maintain markers at a fixed depth below the pavement. Two other upstanding sidewalls extend laterally in the groove and terminate at the lower edge of the reflective area of the reflector. These sidewalls prevent adhesive from entering the reflector pocket. The function of the positioning tabs and lateral sidewalls plus the requirement that headlights need only illuminate this reflective area and not the reflector's non reflective base serve to reduce groove depth by 50% less than prior art. This lightweight plastic housing and shallower groove reduce installation costs and enhance marker safety and performance.

US Patent:

6439803, Aug 27, 2002

Filed:

Oct 18, 1999

Appl. No.:

09/420036

Inventors:

Harry E. Lowe - Schaumburg IL 60193

International Classification:

E01F 904

US Classification:

404 14, 404 12, 404 13

Abstract:

A very low-profile snowplowable pavement marker mounted in an elongated groove formed in a highway pavement, the groove extending longitudinally of the highway and exposing the reflective highway marker to the headlights of oncoming motor vehicles when their approach distance from the reflective highway marker is adequate for highway guidance purposes. The reflective highway marker is a metal casting with a reflector mounted in a pocket formed in the casting. The casting is adhesively installed in a deepened section of the groove. The protective rails of the casting are situated slightly above the pavement surface, but are significantly lower than rails of prior art snowplowable castings. The leading edge of the reflector support is below pavement level and allows light from oncoming headlights to enter the reflector without the shadowing effect prevalent in conventional low-profile marker castings. The elongated groove is much shallower and longer than grooves of prior art, and allows for car tires to enter and clean the reflector in the casting.

US Patent:

20190234032, Aug 1, 2019

Filed:

Jan 25, 2019

Appl. No.:

16/258253

Inventors:

Harry E. Lowe - Schaumburg IL, US

International Classification:

E01F 9/553
E01F 9/576
E01F 11/00

Abstract:

Disclosed are improved snowplowable pavement markers held fixedly to a roadway by adhesive. The markers include a holder and at least one transversely arranged reflector to retroreflect incident light from headlights of approaching vehicles. The holders have a pocket for supporting the reflector. One or more through openings having angled sides are defined in the bottom of the pocket so that when the marker is installed in an adhesive bed on the pavement, adhesive flows into contact with the holder and the bottom of the reflector to simultaneously affix both to the pavement. Reflectors may be replaced by simply chiseling an old reflector out of the holder pocket to create a flat bottom surface in the pocket to which a bead of mastic adhesive is applied and a new reflector is subsequently installed. This new marker construction applies to both raised and recessed snowplowable pavement markers.