US3347523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scissors jack
Assignee: SUMCO Manufacturing CO Inc
•
Filing: 1965-10-23
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Granted: 1967-10-17
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Expires: 1985-10-23
Abstract
No abstract record available.
Inventors
- 👤 Herbert E Hankey
- 👤 Elmer J Hamrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:56
CPC Classifications
B; B66; B66F; B66F3/00; B66F3/08; B66F3/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
238 words
A COLLAPSIBLE JACK, COMPRISING; (A) A BASE; (B) A WORK-ENGAGING PAD SPACE FROM SAID BASE; (C) UPPER AND LOWER SETS OF OPPOSED CROSSED LINKS PIVOTALLY CONNECTED TO SAID PAD AND TO SAID BASE RESPECTIVELY; (D) A DRIVE TRUNNION HAVING (1) A BODY PORTION WITH A THROUGH OPENING; (E) A DRAW TRUNNION HAVING (1) A THREADED THROUGH OPENING, AND (2) BEING SPACED FROM SAID DRIVE TRUNNION ALONG A COMMON AXIS; (F) AN OPERATING SCREW (1) LYING ON SAID COMMON AXIS (2) THREADABLY ENGAGED IN SAID DRAW TRUNNION AND (3) PASSING FREELY THROUGH SAID OPENING IN SAID BODY OF SAID DRIVE TRUNNION; (G) OPPOSITE ADJOINING ENDS OF SAID SETS OF CROSSED LINKS HAVING PIVOTAL INTERCONNECTION TO SAID DRAWN TRUNNION AND BODY PORTION OF SAID DRIVE TRUNNION RESPECTIVELY; (H) A FIRST PLATE (1) MOUNTED ON SAID BODY PORTION OF SAID DRIVE TRUNION OUTSIDE THE POINT OF PIVOTAL CONNECTION OF SAID LINKS THERETO; (I) A SECOND PLATE (1) MOUNTED ON SAID BODY PORTION OF SAID DRIVE TRUNNION BETWEEN SAID OPPOSED LINKS IN PARALLEL SPACED RELATIONSHIP WITH SAID FIRST PLATE; (J) A FIRST SPROCKET AND DRIVE CONNECTOR (1) SECURED TO SAID SCREW AT A POINT OUTSIDE SAID FIRST PLATE; (K) A SECOND SPROCKET AND DRIVE CONNECTOR (1) ROTATABLY CARRIED BY SAID FIRST AND SECOND PLATES, (2) WITH SAID SECOND SPROCKET LYING IN A PLANE COMMON WITH SAID FIRST SPROCKET; AND (L) A SPROCKET CHAIN IN DRIVE-TRANSMITTING ENGAGEMENT WITH SAID FIRST AND SECOND SPROCKETS.
Claim 2
Dependent Claim
238 words
A COLLAPSIBLE JACK, COMPRISING; (A) A BASE; (B) A WORK-ENGAGING PAD SPACE FROM SAID BASE; (C) UPPER AND LOWER SETS OF OPPOSED CROSSED LINKS PIVOTALLY CONNECTED TO SAID PAD AND TO SAID BASE RESPECTIVELY; (D) A DRIVE TRUNNION HAVING (1) A BODY PORTION WITH A THROUGH OPENING; (E) A DRAW TRUNNION HAVING (1) A THREADED THROUGH OPENING, AND (2) BEING SPACED FROM SAID DRIVE TRUNNION ALONG A COMMON AXIS; (F) AN OPERATING SCREW (1) LYING ON SAID COMMON AXIS (2) THREADABLY ENGAGED IN SAID DRAW TRUNNION AND (3) PASSING FREELY THROUGH SAID OPENING IN SAID BODY OF SAID DRIVE TRUNNION; (G) OPPOSITE ADJOINING ENDS OF SAID SETS OF CROSSED LINKS HAVING PIVOTAL INTERCONNECTION TO SAID DRAWN TRUNNION AND BODY PORTION OF SAID DRIVE TRUNNION RESPECTIVELY; (H) A FIRST PLATE (1) MOUNTED ON SAID BODY PORTION OF SAID DRIVE TRUNION OUTSIDE THE POINT OF PIVOTAL CONNECTION OF SAID LINKS THERETO; (I) A SECOND PLATE (1) MOUNTED ON SAID BODY PORTION OF SAID DRIVE TRUNNION BETWEEN SAID OPPOSED LINKS IN PARALLEL SPACED RELATIONSHIP WITH SAID FIRST PLATE; (J) A FIRST SPROCKET AND DRIVE CONNECTOR (1) SECURED TO SAID SCREW AT A POINT OUTSIDE SAID FIRST PLATE; (K) A SECOND SPROCKET AND DRIVE CONNECTOR (1) ROTATABLY CARRIED BY SAID FIRST AND SECOND PLATES, (2) WITH SAID SECOND SPROCKET LYING IN A PLANE COMMON WITH SAID FIRST SPROCKET; AND (L) A SPROCKET CHAIN IN DRIVE-TRANSMITTING ENGAGEMENT WITH SAID FIRST AND SECOND SPROCKETS.
References Cited (Backward Citations)
US2523706A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |