Movable or removable closures – Threshold – Adjustable
Patent
1989-11-22
1991-05-07
Kannan, Philip C.
Movable or removable closures
Threshold
Adjustable
49471, E06B 170
Patent
active
050126148
ABSTRACT:
The present invention is addressed to a thermoplastic threshold of unique configuration and which is manufactured by blow molding techniques. The novel thermoplastic threshold is hollow and sealed to the outside. It is of one-piece construction made by blow molding a parison of thermoplastic material. The threshold has a bottom adapted to rest on a lower horizontal jamb and has stiffener ribs disposed at the bottom. A planar tread segment is disposed to the outside. A transverse, U-shaped channel has upstanding vertical walls and is adapted to receive a sill. The bottom of the channel has apertures for receiving threaded elongate members (e.g. screws) for adjusting the height of a sill that can be disposed within the channel. The outside disposed vertical channel wall is joined about its top to an outer, sloping wall or transition wall that meets the tread segment. At predetermined locations, the bottom of the threshold is recessed upwardly to engage the bottom of the outside vertical channel wall and the sloping wall at its meeting with said tread segment. These bottom recesses have upwardly projecting side weirs disposed from the inner vertical wall to said sloping wall/tread segment meeting. There is a hole in the vertical wall at its bottom and in said sloping wall at its meeting with said tread segment for water to flow from within the channel through said holes and onto said tread segment (e.g., a weep system). The bottom or top adjacent such sealed threshold end contains a channel parallel to each end and adapted to present, with each said end, at least two walls for said threshold to be attached to vertical side jambs for its installation.
REFERENCES:
patent: 3079653 (1963-03-01), Cornell
patent: 3778931 (1973-12-01), Donaldson
patent: 3851420 (1974-12-01), Tibbetts
patent: 3859754 (1975-01-01), Budich et al.
patent: 3900967 (1975-08-01), Bursk et al.
patent: 4310991 (1982-01-01), Seely
patent: 4352258 (1982-10-01), Bursk et al.
patent: 4476653 (1984-10-01), Speer et al.
Kannan Philip C.
Keller Michael L.
LandOfFree
Blow-molded unitary thermoplastic threshold does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Blow-molded unitary thermoplastic threshold, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Blow-molded unitary thermoplastic threshold will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-931673