US3823485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Play detector for detecting play and inspecting the fastening of parts of stationary motorcars and trailers
Assignee: APP TECH ET IND
•
Filing: 1972-04-21
•
Granted: 1974-07-16
•
Expires: 1992-04-21
Abstract
Abstract Checking apparatus is provided to check play and looseners of vehicle parts. Spaced plates are employed to support the wheels of a vehicle which otherwise is supported by a jack. Valves control the operation of piston-cylinder combinations to move the plates transversely and longitudinally of the vehicle.
Inventors
- 👤 W Lambrecht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:42
CPC Classifications
G; G01; G01M; G01M17/00; G01M17/007; G01M17/06; G01B; G01B5/00; G01B5/14; G01B5/146; G01B5/24; G01B5/255
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
96 words
Apparatus for detecting play between parts of a vehicle having transverse and longitudinal extents and for inspecting the connection of said parts, said apparatus comprising movable members adapted to support the wheels of the vehicle, first means to displace said members in the transverse direction of said vehicle, and second means to displace said members in the longitudinal direction of said vehicle, said first means displacing said members in opposite directions, said apparatus further comprising a jack juxtaposed to and located between said members to raise the vehicle while maintaining said wheels on said movable members.
Claim 2
Dependent Claim
96 words
Apparatus for detecting play between parts of a vehicle having transverse and longitudinal extents and for inspecting the connection of said parts, said apparatus comprising movable members adapted to support the wheels of the vehicle, first means to displace said members in the transverse direction of said vehicle, and second means to displace said members in the longitudinal direction of said vehicle, said first means displacing said members in opposite directions, said apparatus further comprising a jack juxtaposed to and located between said members to raise the vehicle while maintaining said wheels on said movable members.
Claim 3
Dependent Claim
19 words
Apparatus as claimed in claim 1 wherein said members are flat plates presenting at least substantially coplanar support surfaces.
Claim 4
Dependent Claim
28 words
Apparatus as claimed in claim 1 wherein said first and second means displace said members in directions which are at least substantially perpendicularly disposed relative to each other.
Claim 5
Dependent Claim
15 words
Apparatus as claimed in claim 1 comprising means defining an inspection pit below said members.
Claim 6
Dependent Claim
31 words
Apparatus as claimed in claim 1 wherein said first and second means include piston and cylinder combinations coupled to said members to displace the same, and control means for said combinations.
Claim 7
Dependent Claim
32 words
Apparatus as claimed in claim 5 wherein the control means is an electrical control including a switch, a flexible conductor connected to the switch and an inspection lamp displaceable with said switch.
Claim 8
Dependent Claim
16 words
Apparatus as claimed in claim 6 wherein the electrical control includes at least one electro-pneumatic valve.
Claim 9
Dependent Claim
13 words
Apparatus as claimed in claim 7 wherein the valve is a four-way valve.
References Cited (Backward Citations)
US1717131A
Cited
US3683683A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |