US4770401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powered C-clamp apparatus
Assignee: Individual
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Filing: 1986-09-08
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Granted: 1988-09-13
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Expires: 2006-09-08
Abstract
Abstract This invention is a power C-clamp apparatus having a main housing assembly; a power drive assembly mounted within the main housing assembly; a gear drive assembly movable by the power drive assembly; a C-clamp assembly having a movable clamp member axially movable by the gear drive assembly; and a power control assembly operable to selectively control and energize the power drive assembly. The power drive assembly includes a main motor assembly operable through an adjustable clutch assembly to drive the gear drive assembly. The gear drive assembly includes a drive gear member engageable with a driven gear member to selectively move the movable clamp member. The C-clamp assembly includes the movable clamp member and a plurality of interchangable clamp members to cooperate with the movable clamp member. The power control assembly includes a circuit assembly having a control switch therein to drive the main motor assembly in reversible directions and a limit switch to automatically provide a control and safety feature for stopping the movable clamp member at its outer limits of movement.
Inventors
- 👤 Humel J. Donaldson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:32
CPC Classifications
B; B25; B25B; B25B5/00; B25B5/06; B25B5/10; B25B5/101; B25B1/00; B25B1/06; B25B1/18; B25B5/067
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
178 words
A powered C-clamp apparatus adapted to clamp objects of various sizes therein and regulate the clamping force applied thereto, comprising: (a) a main housing assembly; (b) a power drive assembly mounted within said main housing assembly and having a main motor assembly operable to drive an output drive shaft member; (c) a gear drive assembly connected to said drive shaft member; (d) a C-clamp assembly having a movable clamp member engagable with said drive gear assembly to move said movable clamp member axially to clamp the object between same and an interchangable clamp member; and (e) said C-clamp assembly includes said interchangable clamp member which is releasably connected to said main housing assembly and said interchangable clamp member being of various sizes and shapes and cooperating with said movable clamp member to clamp an object therebetween, said power drive assembly comprising an adjustable clutch assembly between said drive shaft member of said main motor assembly and a driven shaft member and being operable to provide adjustable clamping force between said movable clamp member and said interchangable clamp member.
Claim 2
Dependent Claim
178 words
A powered C-clamp apparatus adapted to clamp objects of various sizes therein and regulate the clamping force applied thereto, comprising: (a) a main housing assembly; (b) a power drive assembly mounted within said main housing assembly and having a main motor assembly operable to drive an output drive shaft member; (c) a gear drive assembly connected to said drive shaft member; (d) a C-clamp assembly having a movable clamp member engagable with said drive gear assembly to move said movable clamp member axially to clamp the object between same and an interchangable clamp member; and (e) said C-clamp assembly includes said interchangable clamp member which is releasably connected to said main housing assembly and said interchangable clamp member being of various sizes and shapes and cooperating with said movable clamp member to clamp an object therebetween, said power drive assembly comprising an adjustable clutch assembly between said drive shaft member of said main motor assembly and a driven shaft member and being operable to provide adjustable clamping force between said movable clamp member and said interchangable clamp member.
Claim 3
Dependent Claim
67 words
A powered C-clamp apparatus as described in claim 1, wherein: (a) said adjustable clutch assembly having a first clutch member engagable with an adjustable clutch member and having a bias assembly operable through a clutch lever member to adjust the pressure between said first clutch member and said adjustable clutch member to achieve variation of clamping force between said movable clamp member and said interchangable clamp member.
Claim 4
Dependent Claim
38 words
A powered C-clamp apparatus as described in claim 1, wherein: (a) said movable clamp member movable axially without rotation thereof providing a safety feature to prevent injury to the operator thereof or damage to the object being clamped.
Claim 5
Dependent Claim
61 words
A powered C-clamp apparatus as described in claim 1, including: (a) a power control assembly having a circuit assembly with a control switch and a limit switch therein; and (b) said control switch movable from an off to selective on positions to control direction of movement of said movable clamp member due to the reversible nature of said main motor assembly.
Claim 6
Dependent Claim
47 words
A powered C-clamp apparatus as described in claim 4, wherein: (a) said limit switch having means operably connected to said movable clamp member so as to provide an automatic feature for ceasing energization said main motor assembly on outer limits of travel of said movable clamp member.
Claim 7
Dependent Claim
188 words
A powered C-clamp apparatus adapted to clamp an object therebetween under predetermined preselected pressure, comprising: (a) a main housing assembly; (b) a power drive assembly mounted within said main housing assembly having a main motor assembly operable to rotate a drive shaft member; (c) a gear drive assembly engagable with said drive shaft member; (d) said gear drive assembly including a drive gear member connected with said drive shaft member and engagable with a driven gear member; (e) a C-clamp assembly having a movable clamp member and a stationary clamp member; (f) said movable clamp member having a main clamp shaft engagable with a portion of said driven gear member so that on rotation of said driven gear member, said main clamp shaft moves axially without rotation thereof to form a clamping action on an object between said movable clamp member and said stationary clamp member, said power drive assembly comprising an adjustable clutch assembly between said drive shaft member of said main motor assembly and said drive gear member and being operable to provide adjustable clamping force between said movable clamp member and said stationary clamp member.
Claim 8
Dependent Claim
188 words
A powered C-clamp apparatus adapted to clamp an object therebetween under predetermined preselected pressure, comprising: (a) a main housing assembly; (b) a power drive assembly mounted within said main housing assembly having a main motor assembly operable to rotate a drive shaft member; (c) a gear drive assembly engagable with said drive shaft member; (d) said gear drive assembly including a drive gear member connected with said drive shaft member and engagable with a driven gear member; (e) a C-clamp assembly having a movable clamp member and a stationary clamp member; (f) said movable clamp member having a main clamp shaft engagable with a portion of said driven gear member so that on rotation of said driven gear member, said main clamp shaft moves axially without rotation thereof to form a clamping action on an object between said movable clamp member and said stationary clamp member, said power drive assembly comprising an adjustable clutch assembly between said drive shaft member of said main motor assembly and said drive gear member and being operable to provide adjustable clamping force between said movable clamp member and said stationary clamp member.
Claim 9
Dependent Claim
55 words
A powered C-clamp apparatus as described in claim 6, wherein: (a) said stationary clamp member being of various heights and widths thereof so as to be readily interchanged and attached to said main housing assembly to provide numerous variations in in clamping functions with a single one of said power C-clamp apparatus of this invention.
Claim 10
Dependent Claim
68 words
A power C-clamp apparatus as described in claim 7, wherein: (a) said stationary clamp member having a connector assembly mounted within an opening in said main housing assembly; (b) said connector assembly having a head section with a grooved portion; and (c) said opening in said main housing having a receiving groove to receive said grooved portion therein to prevent relative rotational movement of said stationary clamp member.
Claim 11
Dependent Claim
123 words
A powered C-clamp apparatus as described in claim 6, including: (a) a powered control assembly having a control circuit with a control switch and a limit switch mounted therein; (b) said control switch operably connected to said main motor assembly and operable in off position to cease movement of said main motor assembly; (c) said control switch operable in a second position to cause rotation of said main motor assembly and an interconnected said drive shaft member in one direction to achieve a clamping action; and (d) said control switch movable to a third position so as to energize said main motor assembly so as to rotate said drive shaft member in a direction opposite to said one direction to a retracted position.
Claim 12
Dependent Claim
86 words
A powered C-clamp apparatus as described in claim 9, wherein: (a) said limit switch operably connected in said circuit assembly to said main motor assembly and operable in one position to cease power to said main motor assembly when in the fully retracted position and operable in a second position to cease energization of said main motor assembly when in the fully extended position to assure that said movable clamp member will not be damaged by movement beyond the extremes of the extended and retracted positions.
Claim 13
Dependent Claim
47 words
A powered C-clamp apparatus as described in claim 9, wherein: (a) said main clamp shaft movable axially, but not rotatable in said main housing assembly; and (b) said main clamp shaft having lateral projections engagable with said limit switch to control energization of said main motor assembly.
Claim 14
Dependent Claim
45 words
A power C-clamp apparatus as described in claim 11, wherein: (a) said power drive assembly includes an adjustable clutch assembly connected to said drive shaft member and said gear drive assembly to regulate clamping force between said movable clamp member and said stationary clamp member.
Claim 15
Dependent Claim
33 words
A power C-clamp apparatus as described in claim 6, wherein: (a) said stationary clamp member constructed of irregular sizes and shapes so as to be usable on objects of irregular sizes and shapes.
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) | 1991-09-13 | 1992-03-14 | 1992-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-13 | 1996-03-14 | 1996-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-13 | 2000-03-14 | 2000-09-13 | $7700.00 | Window Closed / Lapsed |