US3844531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide valve
Assignee: Individual
•
Filing: 1973-05-29
•
Granted: 1974-10-29
•
Expires: 1993-05-29
Abstract
Abstract A sliding gate valve assembleable from injection molded parts by ultrasonic welding techniques to provide an inexpensive valve having high resistance to leakage.
Inventors
- 👤 N Grengs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:51
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/10; F16K27/105; F16K3/00; F16K3/02; F16K3/0281; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49412; Y10T29/49416; Y10T29/49417
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
259 words
In a sliding gate valve of the type having a provision for connecting to a pair of fluid conduits and having a body within which a gate may slide between first and second positions by operation of an actuating rod extending from the body, the improvement comprising a valve body assembleable by ultrasonic welding from first and second body members, an actuating rod coupled to a gate and an O-ring: each of said body members having first surfaces and being assembleable with said first surfaces in face to face disposition, said first body member having a substantially continuous depression surrounding the area within which the gate will slide and the area through which fluid may flow, said second body member having a substantially continuous raised area mateable with said depression, said raised area having a further protrusion thereon to engage the bottom of said depression and to ultrasonically weld thereto, said first and second body members each having a local relief on said first surface which, when the first and second body members are assembled allows free passage of said actuating rod therethrough, each said relief having thereon a portion of an O-ring groove, said depression and said raised area of said body members each terminating at said O-ring groove, whereby said gate and said actuating rod with an O-ring on said actuating rod may be placed in position between said first and second body members before ultrasonic welding so that said Oring seals against said body members and said actuating rod after ultrasonically welding of said body members.
Claim 2
Dependent Claim
259 words
In a sliding gate valve of the type having a provision for connecting to a pair of fluid conduits and having a body within which a gate may slide between first and second positions by operation of an actuating rod extending from the body, the improvement comprising a valve body assembleable by ultrasonic welding from first and second body members, an actuating rod coupled to a gate and an O-ring: each of said body members having first surfaces and being assembleable with said first surfaces in face to face disposition, said first body member having a substantially continuous depression surrounding the area within which the gate will slide and the area through which fluid may flow, said second body member having a substantially continuous raised area mateable with said depression, said raised area having a further protrusion thereon to engage the bottom of said depression and to ultrasonically weld thereto, said first and second body members each having a local relief on said first surface which, when the first and second body members are assembled allows free passage of said actuating rod therethrough, each said relief having thereon a portion of an O-ring groove, said depression and said raised area of said body members each terminating at said O-ring groove, whereby said gate and said actuating rod with an O-ring on said actuating rod may be placed in position between said first and second body members before ultrasonic welding so that said Oring seals against said body members and said actuating rod after ultrasonically welding of said body members.
Claim 3
Dependent Claim
19 words
The gate valve body of claim 1 wherein said first and second body members are of substantially uniform thickness.
Claim 4
Dependent Claim
65 words
The gate valve body of claim 1 wherein each of said first and second body members has an integral extending member extending outward from said body members and forming a continuation of said relief, each said extending member having a portion of a screw thread thereon so as to define a screw thread substantially concentric to said actuating rod when said valve body is assembled.
Claim 5
Dependent Claim
133 words
The valve body of claim 3, further comprised of a handle and lock nut, said handle and said actuating rod having cooperative means for attaching said handle to the outer end of said actuating rod, said handle having an integral lock nut engaging member substantially concentric with said actuating rod and extending toward said valve body, said lock nut engaging member having an enlarged region therein, said lock nut being internally threaded adjacent one end thereof so as to be threadedly engageable with said screw thread on said extending member, the other end thereof having an opening substantially concentric with said screw threads, said opening and said enlarged region being cooperative to encourage said opening over said enlarged area for assembly of sAid lock nut to said handle, and to resist removal therefrom.
Claim 6
Dependent Claim
52 words
The valve body of claim 4 wherein said enlarged region is generally conical, said opening being smaller in diameter than the largest diameter of said enlarged region and having a chamfered face, whereby said chamfered face cooperatively engages said enlarged region to encourage said opening over said enlarged region for assembly purposes.
Claim 7
Dependent Claim
141 words
The valve body of claim 5 wherein said first and second body members are similar members except for said portions of a screw thread, said depression and said raised area, said gate being of generally uniform thickness and slideable between said first and second body members, said gate having an enlarged area adjacent one edge thereof, said actuating rod having a first generally cylindrical section adjacent gate end thereof and a second generally cylindrical section adjacent and substantially smaller in diameter than said first generally cylindrical section, said enlarged area of said gate having a cooperatively disposed opening having its axis substantially on the center plane of said gate for mateably receiving said first and second generally cylindrical sections of said actuating rod, said opening being slotted through one side thereof whereby said actuating rod may be snapped into said gate.
Claim 8
Dependent Claim
135 words
The valve body of claim 1 wherein said first and second body members are similar members except for said depression and said raised area, said gate being of generally uniform thickness and slideable between said first and second body members, said gate having an enlarged area adjacent one edge thereof, said actuating rod having a first generally cylindrical section adjacent gate end thereof and a second generally cylindrical section adjacent and substantially smaller in diameter than said first generally cylindrical section, said enlarged area of said gate having a cooperatively disposed opening having its axis substantially on the center plane of said gate for mateably receiving said first and second generally cylindrical sections of said actuating rod, said opening being slotted through one side thereof whereby said actuating rod may be snapped into said gate.
Claim 9
Dependent Claim
58 words
The valve body of claim 1 wherein said relief on said first and second body members each has a portion of a second O-ring groove thereon, whereby a second O-ring on said actuating rod may be placed in position between said first and second body members in said second O-ring groove before ultrasonically welding of said body members.
Claim 10
Dependent Claim
29 words
The valve body of claim 1 wherein said depression and said raised area of said body members each terminate at the base of said portion of said O-ring groove.
Claim 11
Dependent Claim
239 words
In a sliding gate valve of the type having a provision for connecting to a pair of fluid conduits and having a body within which a gate may slide between first and second positions by operation of an actuating rod extending from the body, the improvement comprising a valve body assembleable by welding from first and second body members, an actuating rod coupled to a gate and an O-ring: each of said body members having first surfaces and being assembleable with said first surfaces in face to face disposition, said first body member having a substantially continuous depression surrounding the area within which the gate will slide and the area through which fluid may flow, said second body member having a substantially continuous raised area mateable with said depression to weld thereto, said first and second body members each having a local relief on said first surface which, when the first and second body members are assembled allows free passage of said actuating rod therethrough, each said relief having thereon a portion of an O-ring groove, said depression and said raised area of said body members each terminating at said O-ring groove, whereby said gate and said actuating rod with an O-ring on said actuating rod may be placed in position between said first and second body members beFore welding so that said O-ring seals against said body members and said actuating rod after welding of said body members.
Claim 12
Dependent Claim
239 words
In a sliding gate valve of the type having a provision for connecting to a pair of fluid conduits and having a body within which a gate may slide between first and second positions by operation of an actuating rod extending from the body, the improvement comprising a valve body assembleable by welding from first and second body members, an actuating rod coupled to a gate and an O-ring: each of said body members having first surfaces and being assembleable with said first surfaces in face to face disposition, said first body member having a substantially continuous depression surrounding the area within which the gate will slide and the area through which fluid may flow, said second body member having a substantially continuous raised area mateable with said depression to weld thereto, said first and second body members each having a local relief on said first surface which, when the first and second body members are assembled allows free passage of said actuating rod therethrough, each said relief having thereon a portion of an O-ring groove, said depression and said raised area of said body members each terminating at said O-ring groove, whereby said gate and said actuating rod with an O-ring on said actuating rod may be placed in position between said first and second body members beFore welding so that said O-ring seals against said body members and said actuating rod after welding of said body members.
Claim 13
Dependent Claim
19 words
The gate valve body of claim 10 wherein said first and second body members are of substantially uniform thickness.
Claim 14
Dependent Claim
65 words
The gate valve body of claim 10 wherein each of said first and second body members has an integral extending member extending outward from said body members and forming a continuation of said relief, each said extending member having a portion of a screw thread thereon so as to define a screw thread substantially concentric to said actuating rod when said valve body is assembled.
Claim 15
Dependent Claim
133 words
The valve body of claim 12, further comprised of a handle and lock nut, said handle and said actuating rod having cooperative means for attaching said handle to the outer end of said actuating rod, said handle having an integral lock nut engaging member substantially concentric with said actuating rod and extending toward said valve body, said lock nut engaging member having an enlarged region therein, said lock nut being internally threaded adjacent one end thereof so as to be threadedly engageable with said screw thead on said extending member, the other end thereof having an opening substantially concentric with said screw threads, said opening and said enlarged region being cooperative to encourage said opening over said enlarged area for assembly of said lock nut to said handle, and to resist removal therefrom.
Claim 16
Dependent Claim
52 words
The valve body of claim 13 wherein said enlarged region is generally conical, said opening being smaller in diameter than the largest diameter of said enlarged region and having a chamfered face, whereby said chamfered face cooperatively engages said enlarged region to encourage said opening over said enlarged region for assembly purposes.
Claim 17
Dependent Claim
141 words
The valve body of claim 14 wherein said first and second body members are similar members except for said portions of a screw thread, said depression and said raised area, said gate being of generally uniform thickness and slideable between said first and second body members, said gate having an enlarged area adjacent one edge thereof, said actuating rod having a first generally cylindrical section adjacent gate end thereof and a second generally cylindrical section adjacent and substantially smaller in diameter than said first generally cylindrical section, said enlarged area of said gate having a cooperatively disposed opening having its axis substantially on the center plane of said gate for mateably receiving said first and second generally cylindrical sections of said actuating rod, said opening being slotted through one side thereof whereby said actuating rod may be snapped into said gate.
Claim 18
Dependent Claim
135 words
The valve body of claim 10 wherein said first and second body members are similar members except for said depression and said raised area, said gate being of generally uniform thickness and slideable between said first and second body members, said gate having an enlarged area adjacent one edge thereof, said actuating rod having a first generally cylindrical section adjacent gate end thereof and a second generally cylindrical section adjacent and substantially smaller in diameter than said first generally cylindrical section, said enlarged area of said gate having a cooperatively disposed opening having its axis substantially on the center plane of said gate for mateably receiving said first and second generally cylindrical sections of said actuating rod, said opening being slotted through one side thereof whereby said actuating rod may be snapped into said gate.
Claim 19
Dependent Claim
57 words
The valve body of claim 10 wherein said relief on said first and second body members each has a portion of a second O-ring groove thereon, whereby a second O-ring on said actuating rod may be placed in position between said first and second body members in said second O-ring groove before welding of said body members.
Claim 20
Dependent Claim
29 words
The valve body of claim 10 wherein said depression and said raised area of said body members eaCh terminate at the base of said portion of said O-ring groove.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |