US4411312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-tight conduit well cap
Assignee: HEWING Manufacturing CORP
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Filing: 1980-08-26
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Granted: 1983-10-25
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Expires: 2000-08-26
Abstract
Abstract A tamper proof water-tight well cap has been developed to seal the outflow pipe of wells or tanks. The well cap includes a first member coaxially fitting over the outflow pipe having a plurality of peripherally arranged threaded bolt collars to receive and hold bolts. An annular collar member having a plurality of hollow bosses to accommodate bolts is arrayed on the outside circumferential surface of the annular collar member and the collar member has a plurality of radially inwardly extending tabs arranged about its inner circumferential surface. An annular compressible sealing member connects the first base member and the annular collar member to prevent any leakage of liquids into the well or tank. A plurality of bolts fitting through the openings in the bosses on the collar member are threaded into the bolt collars on the base member to hold both parts together. A substantially flat cap member having hooks extending axially downwardly and engaging the tabs to secure said cap to the annular collar member is mounted on top of the annular collar member and has an aperture to accept the bayonet lock pin. The bayonet lock pin fits through the aperture and engages a radial inward extending tab on the annular collar member thus preventing the rotation and removal of the cap.
Inventors
- 👤 Donald H. English
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:03
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
113 words
A pipe cover comprising: (a) an annular base member sealingly attached to a pipe, and having a plurality of radial tabs inwardly extending from the top annular surface thereof; (b) a cap member having a plurality of hooks axially extending into the base member and sealingly placed on an axial end of said base member and said cap member having an aperture therein to receive a bayonet pin member; (c) a bayonet pin fitting into said cap aperture and extending beyond said cap to prevent rotation of the cap; and (d) at least two leverage lugs protruding from the top surface of said cap member to allow for turning of said cap member.
Claim 2
Dependent Claim
113 words
A pipe cover comprising: (a) an annular base member sealingly attached to a pipe, and having a plurality of radial tabs inwardly extending from the top annular surface thereof; (b) a cap member having a plurality of hooks axially extending into the base member and sealingly placed on an axial end of said base member and said cap member having an aperture therein to receive a bayonet pin member; (c) a bayonet pin fitting into said cap aperture and extending beyond said cap to prevent rotation of the cap; and (d) at least two leverage lugs protruding from the top surface of said cap member to allow for turning of said cap member.
Claim 3
Dependent Claim
155 words
A pipe cover comprising: (a) a first member coaxially fitting over a pipe having a plurality of peripherally arranged threaded bolt collars for receiving and holding a bolt; (b) an annular collar member having a plurality of hollow bosses having internal openings to accommodate bolts arrayed on the outside circumferential surface of said annular collar member, said collar member having a plurality of radially inwardly extending tabs arranged about its inner circumferential surface; (c) means for sealingly connecting said first member to said annular collar member; (d) a plurality of bolts fitting through said openings in said bosses and threaded into said bolt collars; (e) a substantially flat cap member sealingly placed on an annular end of the annular collar members and having hooks extending axially downwardly into said cap member having an aperture; and (f) a bayonet lock pin fitting through said aperture and engaging a radially inwardly extending tab on the annular collar.
Claim 4
Dependent Claim
155 words
A pipe cover comprising: (a) a first member coaxially fitting over a pipe having a plurality of peripherally arranged threaded bolt collars for receiving and holding a bolt; (b) an annular collar member having a plurality of hollow bosses having internal openings to accommodate bolts arrayed on the outside circumferential surface of said annular collar member, said collar member having a plurality of radially inwardly extending tabs arranged about its inner circumferential surface; (c) means for sealingly connecting said first member to said annular collar member; (d) a plurality of bolts fitting through said openings in said bosses and threaded into said bolt collars; (e) a substantially flat cap member sealingly placed on an annular end of the annular collar members and having hooks extending axially downwardly into said cap member having an aperture; and (f) a bayonet lock pin fitting through said aperture and engaging a radially inwardly extending tab on the annular collar.
Claim 5
Dependent Claim
23 words
A pipe cover as claimed in claims 1 or 2 wherein there is a means to seal said cap and said annular collar.
Claim 6
Dependent Claim
40 words
The pipe cover of claims 1 or 2 wherein the top of said pin lies below an upper surface of said cap member, and a sealant covers the outside surface of said pin to mask the position of said pin.
Claim 7
Dependent Claim
33 words
A pipe cover as claimed in claim 2 wherein there are at least two leverage lugs protruding from the top surface of said cap member to allow for turning of said cap member.
Claim 8
Dependent Claim
42 words
The pipe cover as claimed in claims 1 or 2 wherein said annular base member has a conduit housing radially disposed on the outside circumferential surface of said annular collar member having an enclosed passage for communication with said annular collar member.
Claim 9
Dependent Claim
47 words
The pipe cover claimed in claim 2 wherein said means for sealingly connecting said first base member and said collar member is an annular member sealing engaging said first base member on an axial surface thereof and sealingly engaging an axial surface of said annular collar member.
Claim 10
Dependent Claim
31 words
The pipe cover as claimed in claims 1 or 2 wherein there is a means for allowing air to enter said pipe while preventing the entry of liquids into said pipe.
Claim 11
Dependent Claim
32 words
The pipe cover as claimed in claim 8 wherein said means for allowing the air to enter said pipe while preventing the entry of liquids into said pipe is a check valve.
Claim 12
Dependent Claim
49 words
The pipe cover claimed in claim 2 wherein said annular collar member has a plurality of radially inwardly extending ears on the axial end oppositely disposed from said plurality of radially inwardly extending tabs which abut against and support said annular collar member upon the end of the pipe.
Claim 13
Dependent Claim
164 words
A pipe cover comprising: a base member, means on an outer surface of said base member for attaching said base member to an end of a pipe, cap means for covering said base member and said end, and having a hole for receiving a pin, said cap means having means for securing said base to said cap means for one rotational position of said cap means with respect to said base member, and for releasing said base member for another rotational position, said cap means having means for covering said means for attaching to prevent said means from being removed from said pipe when said cap means is in said one rotational position, and for uncovering said means for attaching when said cap means is in said another rotational position, and a pin for extending through said hole in said cap means to prevent relative rotation between said cap means and said base member when said cap means is in said one rotational position.
Claim 14
Dependent Claim
164 words
A pipe cover comprising: a base member, means on an outer surface of said base member for attaching said base member to an end of a pipe, cap means for covering said base member and said end, and having a hole for receiving a pin, said cap means having means for securing said base to said cap means for one rotational position of said cap means with respect to said base member, and for releasing said base member for another rotational position, said cap means having means for covering said means for attaching to prevent said means from being removed from said pipe when said cap means is in said one rotational position, and for uncovering said means for attaching when said cap means is in said another rotational position, and a pin for extending through said hole in said cap means to prevent relative rotation between said cap means and said base member when said cap means is in said one rotational position.
Claim 15
Dependent Claim
36 words
The pipe cover of claim 11 wherein the top of said pin lies below the upper surface of said cap means, and a sealant is placed in said hole for masking the location of said pin.
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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) | 1986-10-24 | 1987-04-25 | 1987-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-24 | 1991-04-25 | 1991-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-24 | 1995-04-25 | 1995-10-25 | $7700.00 | Window Closed / Lapsed |