US3744065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fitting for preformed shower pans
Assignee: Individual
•
Filing: 1971-06-01
•
Granted: 1973-07-10
•
Expires: 1991-06-01
Abstract
Abstract A fitting for use with preformed shower pans, which facilitates installation of the drain pipe in the fitting and removal of the drain pipe if repairs are needed at a time after installation. The fitting has a tubular portion closely received and passing through a drain hole in the shower pan, and has a flange at the top for resting on the upper surface of the shower pan. Two tapered inside threads are formed on the fitting, one extending into the lower end and the other into the upper end, for receiving a drain pipe and test standup, respectively. A thread is formed on the outside of the lower fitting portion for receiving a nut that holds the fitting securely to the shower pan. If the drain pipe must be removed, this can be accomplished without damaging the outside threads by one workman stationed below the shower pan, who can grasp the nut with one wrench and the drain pipe with another wrench and turn them in opposite directions, any turning of the nut merely further tightening it so that the drain pipe will soon begin turning to become loosened.
Inventors
- 👤 M Yavitch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:48
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/12; E03C1/22
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
182 words
A drain fitting for use on a preformed shower pan that has a drain hole of predetermined diameter comprising: a fitting body having a tubular portion for passage through said drain hole, a flange at a first end of said tubular portion for lying on the pan region surrounding said drain hole, a first thread formed on the outside of said tubular portion for threadably receiving a nut to hold said fitting body so the flange is held down tightly to the pan region surrounding the drain hole, and a seconD thread formed on the inside of said tubular portion to receive a drain pipe threaded in from a second end of said tubular portion opposite said first end, said second thread being tapered so it is widest at the end opposite the flange to form a water-tight engagement with the drain pipe, said first and second threads being of the same handedness, whereby the drain pipe can be removed by turning it in the loosening direction while holding the nut against turning, all by a workman located under the shower pan.
Claim 2
Dependent Claim
182 words
A drain fitting for use on a preformed shower pan that has a drain hole of predetermined diameter comprising: a fitting body having a tubular portion for passage through said drain hole, a flange at a first end of said tubular portion for lying on the pan region surrounding said drain hole, a first thread formed on the outside of said tubular portion for threadably receiving a nut to hold said fitting body so the flange is held down tightly to the pan region surrounding the drain hole, and a seconD thread formed on the inside of said tubular portion to receive a drain pipe threaded in from a second end of said tubular portion opposite said first end, said second thread being tapered so it is widest at the end opposite the flange to form a water-tight engagement with the drain pipe, said first and second threads being of the same handedness, whereby the drain pipe can be removed by turning it in the loosening direction while holding the nut against turning, all by a workman located under the shower pan.
Claim 3
Dependent Claim
75 words
The drain fitting described in claim 1 wherein: said fitting body has a third thread formed on the inside of said tubular portion and tapered in a direction to receive a pipe threaded in from said first end of said tubular portion, whereby a pipe received in said third thread can be held to prevent turning of the fitting during installation of a nut or drain pipe from below onto said first or second threads.
Claim 4
Dependent Claim
102 words
In a shower pan installation which includes a preformed pan with a hole for closely receiving a drain fitting and a non-circular depression around said hole, the combination with said pan comprising: a fitting having a tubular portion for extending through said hole, said tubular portion having upper and lower end portions and having a non-circular flange received in said depression to prevent turning of said fitting, said tubular portion also having an external thread on its lower end portion; and a nut threadably engaged with said external thread and tightened thereon to hold the flange tightly pressed against the shower pan.
Claim 5
Dependent Claim
102 words
In a shower pan installation which includes a preformed pan with a hole for closely receiving a drain fitting and a non-circular depression around said hole, the combination with said pan comprising: a fitting having a tubular portion for extending through said hole, said tubular portion having upper and lower end portions and having a non-circular flange received in said depression to prevent turning of said fitting, said tubular portion also having an external thread on its lower end portion; and a nut threadably engaged with said external thread and tightened thereon to hold the flange tightly pressed against the shower pan.
Claim 6
Dependent Claim
155 words
A shower and drain installation comprising: a preformed shower pan with upper and lower surfaces and having a drain hole extending therethrough between said upper and lower surfaces; a fitting having a tubular portion extending through said drain hole, said tubular portion having upper and lower portions, said fitting also including a flange at said upper tubular portion resting on the upper surface portion of said pan which lies immediately about said drain hole, and said tubular portion having first threads on the outside of its lower portion, second threads on the inside of its lower portion, and third threads on the inside of its upper portion, at least said first and second threads being right-handed; a drain pipe with tapered threads threadably engaged with said second threads and extending downwardly therefrom; and a nut threadably engaged with said first threads and tightened to hold down said flange against the upper surface of said pan.
Claim 7
Dependent Claim
155 words
A shower and drain installation comprising: a preformed shower pan with upper and lower surfaces and having a drain hole extending therethrough between said upper and lower surfaces; a fitting having a tubular portion extending through said drain hole, said tubular portion having upper and lower portions, said fitting also including a flange at said upper tubular portion resting on the upper surface portion of said pan which lies immediately about said drain hole, and said tubular portion having first threads on the outside of its lower portion, second threads on the inside of its lower portion, and third threads on the inside of its upper portion, at least said first and second threads being right-handed; a drain pipe with tapered threads threadably engaged with said second threads and extending downwardly therefrom; and a nut threadably engaged with said first threads and tightened to hold down said flange against the upper surface of said pan.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |